Mountain Weather

Ben Nevis (Beinn Nibheis) weather forecast.

1,345 m summit in Lochaber. 8 forecast days covering wind, cloud, rain and temperature, updated 14 November 2026 at 06:36 UTC.

Snow & avalanche outlook for walkers

Snow on the hills

Ben Nevis area outlook, the nearest to Ben Nevis (Beinn Nibheis). All winter outlooks

TodayWind-drifted snow expected on steep north and north-east-facing slopes.

Snow on the hills

Expect snow lying above about 1000 m.

Fresh snow and avalanches

A few centimetres of new snow is forecast today. On its own that is unlikely to cause many avalanches, but where wind piles it into drifts it may not bond well for a day or so. Rain or a thaw on the snow will make wet snow slides more likely, especially on steep slopes in the afternoon. A hard frost afterwards would lock the surface up again.

Where the wind will put the snow

Expect strong south-westerly winds, around 30 mph on the tops, to blow the snow about. It will collect as wind slab on steep north and north-east-facing ground, especially below ridges, crags and corrie rims, and in gullies and hollows. Slopes facing into the wind will be scoured, with thinner snow and more rock and ice showing. Why this matters: wind slab is the most common avalanche problem in British hills. Drifted snow settles into a stiff layer resting on softer snow. One person's weight can crack it, and the whole layer then slides at once. Warning signs are cracks running out from your feet, a hollow, drum-like sound, or snow breaking into blocks. The safest choice is to stay off those slopes, especially where they are steep enough that you would want your hands or kick steps.

Spindrift

Spindrift is likely all day: loose snow lifted by the wind and blown towards the north-east. Heading south-westwards, into it, will be hard work, and visibility can drop sharply in gusts. Goggles make a big difference, keeping the snow out of your eyes so you can still see where you are going. Expect it to stream over crag tops and down north and north-east-facing gullies.

Cornices

Cornices are likely to grow above north and north-east-facing slopes because a 30 mph wind is strong enough to carry loose snow; and that wind will blow across the ridges from the south-west. A cornice is an overhanging lip of snow built out over the drop by the wind. It can break well back from the edge, so keep well away from it, especially in poor visibility, and do not linger below one, particularly as it warms.

Underfoot

Expect wind-packed snow that carries you in places, with softer pockets in sheltered spots. Conditions will change through the day: thawing intermittently for 4 hours between 15:00 and 24:00.

Frozen turf

Turf is forecast to be frozen to about 6 cm at 1150 m; not frozen at 850 m. Early in the winter the ground still holds summer warmth, so turf can stay soft for longer than the air suggests. Check before relying on it.

Snow to come

On Tuesday: 10 to 20 cm of snow expected on the tops, drifting onto north-west through north to north-east-facing slopes.

TomorrowWind-drifted snow expected on steep north and north-east-facing slopes.

Snow on the hills

Expect snow lying above about 1000 m.

Fresh snow and avalanches

5 to 10 cm of new snow is forecast over the three days to tomorrow. On its own that is unlikely to cause many avalanches, but where wind piles it into drifts it may not bond well for a day or so. Rain or a thaw on the snow will make wet snow slides more likely, especially on steep slopes in the afternoon. A hard frost afterwards would lock the surface up again.

Cornices

Cornices are likely to grow above north and north-east-facing slopes because there will be plenty of new snow to move. A cornice is an overhanging lip of snow built out over the drop by the wind. It can break well back from the edge, so keep well away from it, especially in poor visibility, and do not linger below one, particularly as it warms.

Underfoot

Expect a frozen crust early, softening through the day into heavier, wetter snow. Conditions will change through the day: thawing until 07:00, then refreezing.

Frozen turf

Turf is forecast to be frozen to about 8 cm at 1150 m; only a thin frozen crust at 850 m. Early in the winter the ground still holds summer warmth, so turf can stay soft for longer than the air suggests. Check before relying on it.

Snow to come

On Tuesday: 10 to 20 cm of snow expected on the tops, drifting onto north-west through north to north-east-facing slopes. On Wednesday: 5 to 10 cm of snow expected on the tops, drifting onto north-west through north to north-east-facing slopes.

Mon 16 NovWind-drifted snow expected on steep north and north-east-facing slopes.

Snow on the hills

Expect snow lying above about 1000 m.

Fresh snow and avalanches

A few centimetres of new snow is forecast over the three days to Monday. On its own that is unlikely to cause many avalanches, but where wind piles it into drifts it may not bond well for a day or so. Rain or a thaw on the snow will make wet snow slides more likely, especially on steep slopes in the afternoon. A hard frost afterwards would lock the surface up again.

Cornices

Small cornices may start to form above north and north-east-facing edges where the wind piles up loose snow. Even a small one can give way, so keep back from the edge.

Underfoot

Expect firm névé: old snow that has thawed and refrozen. Crampons grip it well, but a slip on it can be very hard to stop, so an ice axe matters.

Frozen turf

Turf is forecast to be frozen to about 10 cm at 1150 m; frozen to about 4 cm at 850 m. Early in the winter the ground still holds summer warmth, so turf can stay soft for longer than the air suggests. Check before relying on it.

Snow to come

On Tuesday: 10 to 20 cm of snow expected on the tops, drifting onto north-west through north to north-east-facing slopes. On Wednesday: 5 to 10 cm of snow expected on the tops, drifting onto north-west through north to north-east-facing slopes.

Tue 17 NovFresh snow and drifting on Tuesday: take most care on steep north-west through north to north-east-facing slopes.

Snow on the hills

Expect snow lying above about 400 m. Drifts will be deepest on north-west through north to north-east-facing slopes, where soft snow may be knee-deep or more in hollows and gully tops.

Fresh snow and avalanches

10 to 20 cm of new snow is forecast at around 1150 m on Tuesday. Most avalanches happen during heavy snowfall or within about 24 hours of it, and wind-drifted snow can stay unstable for a day or two longer. So on Tuesday and the day after are the time to be most careful. It should then improve, faster if it thaws and freezes again.

Where the wind will put the snow

Expect strong southerly winds, around 38 mph on the tops, to blow the snow about. It will collect as wind slab on steep north-west through north to north-east-facing ground, especially below ridges, crags and corrie rims, and in gullies and hollows. Slopes facing into the wind will be scoured, with thinner snow and more rock and ice showing. Older drifts from earlier winds are also likely on west-facing slopes. Why this matters: wind slab is the most common avalanche problem in British hills. Drifted snow settles into a stiff layer resting on softer snow. One person's weight can crack it, and the whole layer then slides at once. Warning signs are cracks running out from your feet, a hollow, drum-like sound, or snow breaking into blocks. The safest choice is to stay off those slopes, especially where they are steep enough that you would want your hands or kick steps.

Spindrift

Spindrift is likely all day: loose snow lifted by the wind and blown towards the north. Heading southwards, into it, will be hard work, and visibility can drop sharply in gusts. Goggles make a big difference, keeping the snow out of your eyes so you can still see where you are going. Expect it to stream over crag tops and down north-west through north to north-east-facing gullies.

Cornices

Cornices are likely to grow above north-west through north to north-east-facing slopes because there will be plenty of new snow to move; a 38 mph wind is strong enough to carry loose snow; and that wind will blow across the ridges from the south. A cornice is an overhanging lip of snow built out over the drop by the wind. It can break well back from the edge, so keep well away from it, especially in poor visibility, and do not linger below one, particularly as it warms.

Underfoot

Expect new, loose snow on top, with hard going in deeper drifts.

Frozen turf

Turf is forecast to be frozen to about 10 cm at 1150 m; frozen to about 4 cm at 850 m. Early in the winter the ground still holds summer warmth, so turf can stay soft for longer than the air suggests. Check before relying on it.

Snow to come

On Wednesday: 5 to 10 cm of snow expected on the tops, drifting onto north-west through north to north-east-facing slopes.

Wed 18 NovWind-drifted snow expected on steep north-west through north to north-east-facing slopes.

Snow on the hills

Expect snow lying above about 800 m. Drifts will be deepest on west through north-west to north-east-facing slopes, where soft snow may be knee-deep or more in hollows and gully tops.

Fresh snow and avalanches

5 to 10 cm of new snow is forecast on Wednesday. On its own that is unlikely to cause many avalanches, but where wind piles it into drifts it may not bond well for a day or so.

Where the wind will put the snow

Expect gale-force southerly winds, around 45 mph on the tops, to blow the snow about. It will collect as wind slab on steep north-west through north to north-east-facing ground, especially below ridges, crags and corrie rims, and in gullies and hollows. Slopes facing into the wind will be scoured, with thinner snow and more rock and ice showing. Older drifts from earlier winds are also likely on west-facing slopes. Why this matters: wind slab is the most common avalanche problem in British hills. Drifted snow settles into a stiff layer resting on softer snow. One person's weight can crack it, and the whole layer then slides at once. Warning signs are cracks running out from your feet, a hollow, drum-like sound, or snow breaking into blocks. The safest choice is to stay off those slopes, especially where they are steep enough that you would want your hands or kick steps.

Spindrift

Spindrift is likely all day: loose snow lifted by the wind and blown towards the north. Heading southwards, into it, will be hard work, and visibility can drop sharply in gusts. Goggles make a big difference, keeping the snow out of your eyes so you can still see where you are going. Expect it to stream over crag tops and down north-west through north to north-east-facing gullies.

Cornices

Cornices are likely to grow above north-west through north to north-east-facing slopes because there will be plenty of new snow to move; a 45 mph wind is strong enough to carry loose snow; and that wind will blow across the ridges from the south. A cornice is an overhanging lip of snow built out over the drop by the wind. It can break well back from the edge, so keep well away from it, especially in poor visibility, and do not linger below one, particularly as it warms.

Underfoot

Expect new, loose snow on top, with hard going in deeper drifts.

Frozen turf

Turf is forecast to be frozen to about 11 cm at 1150 m; only a thin frozen crust at 850 m. Early in the winter the ground still holds summer warmth, so turf can stay soft for longer than the air suggests. Check before relying on it.

Thu 19 NovWind-drifted snow expected on steep north-west through north to north-east-facing slopes.

Snow on the hills

Expect snow lying above about 800 m. Drifts will be deepest on north-west through north to north-east-facing slopes, where soft snow may be knee-deep or more in hollows and gully tops.

Fresh snow and avalanches

10 to 20 cm of new snow is forecast over the three days to Thursday. On its own that is unlikely to cause many avalanches, but where wind piles it into drifts it may not bond well for a day or so.

Where the wind will put the snow

Expect strong southerly winds, around 39 mph on the tops, to blow the snow about. It will collect as wind slab on steep north-west through north to north-east-facing ground, especially below ridges, crags and corrie rims, and in gullies and hollows. Slopes facing into the wind will be scoured, with thinner snow and more rock and ice showing. Older drifts from earlier winds are also likely on west-facing slopes. Why this matters: wind slab is the most common avalanche problem in British hills. Drifted snow settles into a stiff layer resting on softer snow. One person's weight can crack it, and the whole layer then slides at once. Warning signs are cracks running out from your feet, a hollow, drum-like sound, or snow breaking into blocks. The safest choice is to stay off those slopes, especially where they are steep enough that you would want your hands or kick steps.

Cornices

Cornices are likely to grow above north-west through north to north-east-facing slopes because there will be plenty of new snow to move; a 39 mph wind is strong enough to carry loose snow; and that wind will blow across the ridges from the south. A cornice is an overhanging lip of snow built out over the drop by the wind. It can break well back from the edge, so keep well away from it, especially in poor visibility, and do not linger below one, particularly as it warms.

Underfoot

Expect new, loose snow on top, with hard going in deeper drifts.

Frozen turf

Turf is forecast to be frozen to about 12 cm at 1150 m; frozen to about 4 cm at 850 m. Early in the winter the ground still holds summer warmth, so turf can stay soft for longer than the air suggests. Check before relying on it.

A forecast explained from a computer model of the weather and snow. It is not an official avalanche forecast. Conditions on the ground can differ, so look and judge for yourself.

Snow and avalanche outlook: Mountain Conditions by Spatial Terrain Ltd, used with permission. Issued 14 November 2026 at 06:24 UTC.

Explore the mountain in 3D

See the wind across Ben Nevis.

Watch the flow over ridges and through valleys. Choose a forecast day and time, follow the paths, and tap the terrain for modelled mean wind.

Explore Ben Nevis in Wind Lab Contains modified Copernicus data (2021). Paths © OpenStreetMap contributors.

Explore the mountain in 3D

See the snow on Ben Nevis.

Modelled snow lying on Ben Nevis, today and for five days ahead, with the paths, gullies and named features around it.

Open Ben Nevis in 3D Terrain and snow model: Mountain Conditions by Spatial Terrain Ltd, used with permission. Map data © OpenStreetMap contributors.

Choose your hill day.

Compare 8 days, then read the outlook for your visit. Scores start at 100 and can fall below zero in severe weather. How we score a hill day.

Select a day to replace the detailed forecast below. 8 forecast days are available here.

Confidence: Medium
Overall hill weather-20Severe hill conditions
Summit wind · 08:00-17:0025-45 mph southwesterly Summit gusts · 08:00-17:0055-65 mph Feels like-12 to -8°C PrecipitationAround 10-20 mm Cloud-free summit estimate10% Cloud base through day400-700 m Freezing level800-1,100 m Last observed cloud baseAround 900 m · Older observation Provisional estimate, above sea level. DaylightSunrise 07:57 · Sunset 16:10 · 8.2 hours daylight

The day on the hill

A wild day on the tops of Ben Nevis, with sleet or snow on the tops and very strong, gusty winds. Not a day for the summit.

Snow and navigation

Sleet or snow is possible on the tops during the morning and afternoon, with small temperature changes affecting the mix. The air freezing level is roughly 900 to 1600 m above sea level. Snow can fall below this, but its lower limit is uncertain. There is a risk of blizzard conditions during the morning and afternoon, when snow and strong winds coincide. Paths and footprints can quickly disappear beneath falling and blowing snow. Snow may collect in deeper drifts in hollows, behind boulders and on slopes sheltered from the wind. Exposed ground may be scoured while nearby drifts deepen. Wind-loaded slopes can also be avalanche terrain. Check the local avalanche forecast where one is available; this is not an assessment of slope stability.

Wind

On the summit expect a south-westerly wind of 25–45 mph for most of the day, with gusts of 55–65 mph at the windiest. Lower down on the open hillside it will be more like 15–25 mph. Gusts like that are strong enough to make walking very difficult and tiring, with a risk of being blown off your feet. Avoid exposed ridges and edges.

Cloud and visibility

Expect the summit to be in cloud for most of the day. The cloud base could be as low as 400–700 m mid-afternoon. In cloud you'll be finding your way without landmarks, so carry navigation you trust and know how to use, with a backup such as a spare battery or a map and compass. Where snow covers the ground, the sky and hillside can merge into a featureless white view, making it difficult to judge slope or direction. Do not rely on following a visible path. Avoid exposed routes if you cannot navigate safely in these conditions, and turn back before visibility deteriorates.

Rain and ground

Sleet and snow for much of the day, becoming heavier through the afternoon. Expect 10–20 mm in total, measured as melted water, so any snow would lie deeper. Totals are uncertain and could be higher.

Warmth and kit

On the tops it will be around -4 to 0°C, feeling like -12 to -8°C in the wind. The freezing level is around 900–1200 m, so it will be below freezing on the tops. Hat, gloves and a warm insulated layer are essential, with extra warmth for stops. Pack waterproofs too, and keep a warm layer dry in your pack.

Daylight

A short day, with only about 8 hours of daylight. Sunset is around 4:10pm, so allow time to get off the hill before dark, and carry a head torch.

Forecast confidence

There is some disagreement between forecast models on wind strength. Things could still change through the day, so keep an eye on the sky.

Below zero means severe hill conditions. More negative scores indicate more severe forecast weather. Read the hazard details before making plans. Below zero means severe hill conditions. More negative scores indicate more severe forecast weather. Read the hazard details before making plans.

Sunshine context Model-grid estimate, not summit sunshine

The surrounding model grid indicates 0 h of sunshine. This is not a forecast of time in sunshine on the summit. Use the cloud and views outlook above for the conditions on this mountain.

Early
0 h
Midday
0 h
Later
0 h

Overnight forecast: 17:00–08:00 (UK local time), in Wild camping below.

Morning · 08:00–12:00 Severe hill conditions Summit winds around 25-40 mph. Gusts around 40-50 mph are possible on exposed ground. Gusts this strong can knock you off balance, so take care near edges and on narrow ridges. Rain is forecast during this period.
-12
Afternoon · 12:00–17:00 Severe hill conditions More rain is expected. Summit winds around 30-40 mph in the early afternoon, strengthening to 40-50 mph later. Gusts around 55-65 mph are possible on exposed ground. Gusts this strong can make walking very difficult and tiring, with a risk of being blown off your feet. Avoid exposed ridges and edges. Rain is forecast during this period. Some forecast models bring rain during the afternoon, while others keep it mostly dry.
-28

Compare an early start with later conditions. The main forecast above covers the day in more detail.

Overnight · 17:00–08:00Wild campingBetaNot a night to camp on the open hill: gusts of about 55 mph and heavy rain, around 25 mm. 9Poor · 600 m View detailsHide details
Night beginning Saturday 14 November 2026

Full overnight outlook

Not a night to camp on the open hill. Gusts reach about 55 mph around 900 m and nearer 40 mph around 300 m, strong enough to flatten or tear a tent. Don't count on finding shelter once you're up there. Choose another night or a low, sheltered spot. Expect heavy rain, around 25 mm, with rain while you pitch and still falling when you pack up. Above about 600 m you'd likely be in cloud for part of the night: damp, and hard to find your way if you need to move. A cold night, down to about 0°C around 900 m. A warm 3-season or 3–4 season bag rated to about 0°C comfort, and a warm mat, should do. Allow more if you sleep cold.

Overnight rain24.2 mm Open ground · 600 m23 mph · gusts 48 mph Morning pack-upDampness possible Sleeping-bag warmthISO comfort rating about 0°C or lower

Moon overnight

Waxing crescent moon

Illuminated disc
27%
Moonrise
Outside this window
Moonset
19:33 GMT

Cloud at the reference camping height may hide the Moon. Illumination describes the sunlit part of the Moon, not brightness at your pitch.

Overnight window: 14 Nov, 17:00 GMT to 15 Nov, 08:00 GMT. Approximate open-horizon times; hills can hide the Moon. Still take a headtorch.

Elevation reference (open ground)

300 m19 · very poor
Wind / gust
19 mph / 40 mph
Typical / low
6.3°C / 3.7°C · a brief spell
In cloud
0% of modelled night
Condensation
High
600 m9 · very poor
Wind / gust
23 mph / 48 mph
Typical / low
4.9°C / 2.2°C · much of the night
In cloud
93% of modelled night
Condensation
High
900 m9 · very poor
Wind / gust
27 mph / 57 mph
Typical / low
2.9°C / 0.4°C · much of the night
In cloud
93% of modelled night
Condensation
High

Warmth planning: As a broad starting point, consider a warm 3-season or 3–4 season bag with an ISO/EN comfort rating at or below about 0°C. Allow more margin if you sleep cold or expect fatigue, and use an adequate insulated mat. Dampness is possible, so keep the sleep system dry and ensure its insulation remains effective if damp.

Open-hillside reference. A sheltered pitch may be calmer; cols and ridges may be much windier. Tent design and the exact pitch still matter. Read about sleeping-bag comfort ratings, pitching in strong winds or using the wild-camping forecast.

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Approximate height is enough, please do not share an exact wild-camp location.

Daytime · exposed rockClimbing & scramblingBetaVery poor conditions for exposed scrambling: wet, slippery rock. Poor0 View detailsHide details
Generic exposed-rock guidance

Full climbing & scrambling outlook

Very poor conditions for exposed scrambling. The rock is likely to be wet and slippery through the day. Icy patches are likely on the rock, which makes it treacherous without winter kit. Gusts of 55–65 mph are strong enough to make walking very difficult and tiring, with a risk of being blown off your feet. Avoid exposed ridges and edges. Cloud on the tops may make route-finding and retreat harder. The rock around the summit is mostly andesite, a hard volcanic rock. It grips well when dry and is fair when wet, though polished holds on popular routes get slippery. It is generally solid, but shattered in gullies and on broken ground. On the usual routes up you may also cross granite, which has excellent friction when dry and clean and is fair when wet, but greasy where there is lichen or moss. These are general notes for each rock type, taken from geological maps around the summit, so the rock on your line may differ.

Rock surfaceWet rock likelyPeak gust55-65 mphRain11.6 mm
Main factorsgusts of 55–65 mphwet rock likelymuch of the route may be in cloud
Representative rock around the summit and along available routes Hornblende-andesite lava Ben Nevis Volcanic Formation
Origin
Igneous
Broad rock-response group
Volcanic rock
Mapping
BGS Geology 50K · 1:50,000
Summit area
Volcanic rock in 100% of 17 BGS samples within 350 m
Rock-response profile
Low confidence
View the summit BGS record

Andesite is a hard volcanic rock. It grips well when dry and is fair when wet, though polished holds on popular routes get slippery. It is generally solid, but shattered in gullies and on broken ground. These are general notes for each rock type, from geological map samples at and around the summit. The rock on your line can differ, and lichen, vegetation and seepage all change how it feels underfoot.

Rock groups along the sampled routes

These are mapped rock groups, not separate weather forecasts or a ranking of route safety.

Ben Nevis

volcanic rock, granite, gneiss or gabbro

Càrn Mòr Dearg and Ben Nevis

volcanic rock, granite, gneiss or gabbro

Geological detail and BGS records
Mapped variation

5 rock types appear in the mapped samples

Samples around the summit inform the main rock-response profile, with the summit pin shown separately where it differs. Route samples add further context, but this is not a continuous geological survey.

Summit-area sample Hornblende-andesite lava Ben Nevis Volcanic Formation 856–1,343 m samples Seen on Ben Nevis, Càrn Mòr Dearg and Ben Nevis

Andesite is a hard volcanic rock. It grips well when dry and is fair when wet, though polished holds on popular routes get slippery. It is generally solid, but shattered in gullies and on broken ground.

BGS record
Route sample Leucomicrogranodiorite Ben Nevis Complex (Inner Granite) 511–1,020 m samples Seen on Ben Nevis, Càrn Mòr Dearg and Ben Nevis

Granite is a coarse, crystalline rock. It has excellent friction when dry and clean and is fair when wet, but greasy where there is lichen or moss. It is generally solid, but weathers into rounded slabs and blocks, and loose granite grit on slabs can roll underfoot like ball bearings.

BGS record
Route sample Porphyritic granodiorite Ben Nevis Complex (Outer Granite) 393–535 m samples Seen on Càrn Mòr Dearg and Ben Nevis

Granite is a coarse, crystalline rock. It has excellent friction when dry and clean and is fair when wet, but greasy where there is lichen or moss. It is generally solid, but weathers into rounded slabs and blocks, and loose granite grit on slabs can roll underfoot like ball bearings.

BGS record
Route sample Lamprophyre Ben Nevis Dyke Swarm Around 174 m Seen on Ben Nevis

Lamprophyre is a dark rock that usually forms thin dykes. It grips reasonably when dry and is poor when wet. It weathers easily and is often crumbly and loose, so treat it with suspicion.

BGS record
Route sample Microgabbro North Britain Palaeogene Dyke Suite Around 354 m Seen on Ben Nevis

Dolerite is a hard, dark, fine-grained rock. It grips well when dry and is fair when wet. It is usually solid, but it often breaks into blocky columns, so check blocks before you pull on them.

BGS record

Generic exposed scrambling terrain; BGS summit-area bedrock samples are included where available, but route grade, exact rock, polish, drainage and escape options remain unresolved. Contains British Geological Survey materials © UKRI 2026. How to use the climbing and scrambling forecast.

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A broad surface report is enough; you do not need to identify a particular route.

Overnight · Aurora, stars & meteorsAfter darkBetaMostly cloudy, so little chance of seeing the stars. Rain at times. Hazy, which dims the fainter stars. View forecastClose forecast

After dark: aurora and stargazing

Night beginning 2026-11-14. All times are UK local time.

Using the last available sky forecast, updated at 10:56 GMT on 14 Nov. Cloud conditions may have changed. Live aurora guidance is temporarily unavailable.

Stargazing

Poor sky conditions during the best available spell: 14 Nov, 19:00 GMT to 20:00 GMT.

Mostly cloudy, so little chance of seeing the stars. Rain at times. Hazy, which dims the fainter stars.

Moon-free dark sky: 14 Nov, 19:25 GMT to 15 Nov, 05:45 GMT.

Sky conditions through the night
Fully dark periods. Conditions can change between forecast hours.
TimeViewing conditions
14 Nov, 18:25 GMT to 19:00 GMTPoor sky conditions

Mostly cloudy, so little chance of seeing the stars. Rain at times. Hazy, which dims the fainter stars.

14 Nov, 19:00 GMT to 20:00 GMTPoor sky conditions

Mostly cloudy, so little chance of seeing the stars. Rain at times. Hazy, which dims the fainter stars.

14 Nov, 20:00 GMT to 21:00 GMTPoor sky conditions

Mostly cloudy, so little chance of seeing the stars. Rain at times. Hazy, which dims the fainter stars.

14 Nov, 21:00 GMT to 22:00 GMTPoor sky conditions

Mostly cloudy, so little chance of seeing the stars. Rain at times. Hazy, which dims the fainter stars.

14 Nov, 22:00 GMT to 23:00 GMTPoor sky conditions

Mostly cloudy, so little chance of seeing the stars. Rain at times. Hazy, which dims the fainter stars.

14 Nov, 23:00 GMT to 15 Nov, 00:00 GMTPoor sky conditions

Mostly cloudy, so little chance of seeing the stars. Rain at times. Hazy, which dims the fainter stars.

15 Nov, 00:00 GMT to 01:00 GMTPoor sky conditions

Mostly cloudy, so little chance of seeing the stars. Rain at times. Hazy, which dims the fainter stars.

15 Nov, 01:00 GMT to 02:00 GMTPoor sky conditions

Mostly cloudy, so little chance of seeing the stars. Rain at times. Hazy, which dims the fainter stars.

15 Nov, 02:00 GMT to 03:00 GMTPoor sky conditions

Mostly cloudy, so little chance of seeing the stars. Rain at times. Hazy, which dims the fainter stars.

15 Nov, 03:00 GMT to 04:00 GMTPoor sky conditions

Mostly cloudy, so little chance of seeing the stars. Rain at times. Hazy, which dims the fainter stars.

15 Nov, 04:00 GMT to 05:00 GMTPoor sky conditions

Mostly cloudy, so little chance of seeing the stars. Rain at times. Hazy, which dims the fainter stars.

15 Nov, 05:00 GMT to 05:45 GMTPoor sky conditions

Mostly cloudy, so little chance of seeing the stars. Rain at times. Hazy, which dims the fainter stars.

Moon, darkness and meteor showers

Crescent moon, about 28% illuminated.

Moonset around 14 Nov, 19:25 GMT.

Full darkness: 14 Nov, 18:25 GMT to 15 Nov, 05:45 GMT.

Moon times assume an open horizon. Hills can hide the Moon sooner. Moon-free does not mean cloud-free.

Southern Taurids are active on this night. Activity may be much lower away from the peak.

Northern Taurids are active on this night. Activity may be much lower away from the peak.

Leonids are active on this night. Activity may be much lower away from the peak.

  • Southern Taurids: peak around 10 October 2026.
  • Northern Taurids: peak around 12 November 2026.
  • Leonids: peak around 18 November 2026.
  • Geminids: peak around 14 December 2026.
  • Ursids: peak around 22 December 2026.

Dates from the Royal Observatory Greenwich. Activity dates do not guarantee visible meteors. Look across a broad, dark sky, not only north.

Darkness of the surroundings

Estimated darkness rank 483 of 980 assessed peaks (1 is darkest), based on surrounding artificial light in 2021. This is not a measurement of tonight’s sky.

2021 artificial-light baseline, not measured sky brightness or a Bortle class. Changes to lighting, blue-rich LEDs, terrain screening, atmospheric scattering and cloud-reflected light are not resolved. Similar ranks are not meaningfully distinct. Darkness is not a recommendation to climb a summit at night.

VIIRS nighttime lights: Earth Observation Group, Payne Institute for Public Policy, Colorado School of Mines. Reprocessed by OpenGeoHub/OpenLandMap. Cropped and ranked by Mountain Weather.

Terrain at this viewpoint

Approximate terrain horizon at Ben Nevis. Trees, buildings and nearby obstacles are not included.

Approximate bare-earth horizon, not surveyed sightlines. Narrow ridges may fall between samples. Trees, buildings and very close obstacles are not resolved. Valid only at the named summit coordinate, not on its slopes or at a lower campsite.

Mapzen Terrain Tiles. Europe terrain produced using Copernicus data and information funded by the European Union, EU-DEM layers. UK terrain: Environment Agency copyright and/or database right 2015. Global terrain: USGS and NOAA.

Contains Welsh Government public sector information licensed under the Open Government Licence v3.0.

Sky-weather grades exclude light pollution, terrain and thin haze. They are not mountain safety ratings. Check the mountain and camping forecast separately. Accessible lower viewpoints may be a better choice than summits.

Explore the dedicated aurora forecast, meteor shower forecast or dark-sky and astrophotography forecast.

Recommended kit for this dayWeather-aware packing prompts, plus your core hillwalking kitView kit

For a day hillwalk, not a complete route-specific checklist. Carry navigation and backup you can use, warm and waterproof layers, suitable footwear, food and water, a headtorch, emergency shelter, first aid and a way to call for help. Snow, ice, technical terrain and overnight trips need additional equipment and skills.

Does the weather shape your plans?Optional hill-user research. One answer helps; further questions are up to you.Take part

Help the Mountain Decisions Project understand how forecasts influence hill days, including when plans stay the same. Findings will be shared publicly as summaries, not individual responses.

This is about Ben Nevis on Saturday 14 November 2026. It asks about intentions, not whether you actually went out. No name or account is needed.

Open the questions to take part.

About the research and your privacy · Already been out? Share that experience instead

Confidence: Medium
Overall hill weather34Poor
Summit wind · 08:00-17:000-20 mph northerly Summit gusts · 08:00-17:0020-30 mph Feels like-16 to -12°C PrecipitationAround 2-5 mm Cloud-free summit estimate30% Cloud base through day300-2,000 m Freezing level400-700 m DaylightSunrise 07:59 · Sunset 16:08 · 8.2 hours daylight

The day on the hill

A poor day on the tops of Ben Nevis, with snow on the tops and burns likely to be in spate.

Snow and navigation

Snow is forecast on the tops during the morning and afternoon. The air freezing level is roughly 500 to 1000 m above sea level. Snow can fall below this, but its lower limit is uncertain. The forecast model suggests around 2 cm of fresh snowfall at around 1300 m between 09:00 and 17:00 (local time). The amount settling is uncertain and will vary with melting and drifting.

Things to watch

Burns and rivers are likely to be in spate from the morning into the afternoon, so unbridged crossings could be difficult or impossible. Timings are rough. Turn back if a crossing looks unsafe.

Wind

On the summit expect a northerly wind of 0–20 mph for most of the day, with gusts of 20–30 mph at the windiest.

Cloud and visibility

The tops are likely to drift in and out of cloud, with the best chance of a clear summit mid-morning. The cloud base could be as low as 300–600 m around midday. In cloud you'll be finding your way without landmarks, so carry navigation you trust and know how to use, with a backup such as a spare battery or a map and compass. Falling snow may sharply reduce visibility and obscure paths and landmarks.

Rain and ground

Snow at first, clearing by early afternoon. Some forecast models keep it drier in the morning. It will be wet underfoot after recent rain.

Warmth and kit

On the tops it will be around -8 to -4°C, feeling like -16 to -12°C in the wind. It will feel colder later as the wind picks up. The freezing level is around 500–800 m, so it will be below freezing on the tops. Hat, gloves and a warm insulated layer are essential, with extra warmth for stops. Pack waterproofs too, and keep a warm layer dry in your pack.

Daylight

A short day, with only about 8 hours of daylight. Sunset is around 4:10pm, so allow time to get off the hill before dark, and carry a head torch.

Forecast confidence

Some of the detail could still change, so have a last look at the forecast in the morning before you set off.

Sunshine context Model-grid estimate, not summit sunshine

The surrounding model grid indicates 0 h of sunshine. This is not a forecast of time in sunshine on the summit. Use the cloud and views outlook above for the conditions on this mountain.

Early
0 h
Midday
0 h
Later
0 h

Overnight forecast: 17:00–08:00 (UK local time), in Wild camping below.

Morning · 08:00–12:00 Poor Summit winds around 0-10 mph. Gusts around 5-15 mph are possible on exposed ground. Summit cloud is more persistent early in this period, with better prospects later. Rain is forecast during this period. Some forecast models bring rain during the morning, while others keep it mostly dry.
24
Afternoon · 12:00–17:00 Poor Rain eases compared with the morning. Summit winds around 5-20 mph. Gusts around 20-30 mph are possible on exposed ground. Rain is possible during the afternoon, but forecast models disagree on whether it will fall.
45

Compare an early start with later conditions. The main forecast above covers the day in more detail.

Overnight · 17:00–08:00Wild campingBetaA poor night to camp on open ground: gusts of about 40 mph and a frost, down to -5°C. 39Poor · 600 m View detailsHide details
Night beginning Sunday 15 November 2026

Full overnight outlook

A poor night to camp on open ground. Gusts reach about 40 mph around 900 m and nearer 25 mph around 300 m, which makes for a noisy, testing night even in a good tent. Look for shelter from the north. It should stay dry. Above about 600 m you'd likely be in cloud for part of the night: damp, and hard to find your way if you need to move. The air is damp at every height we checked (300-900 m), so expect heavy condensation. Leave the vents open. A frost at every height we checked (300-900 m), down to about -5°C. A 4-season bag rated to about -6°C comfort, and a warm mat, should do. Allow more if you sleep cold.

Overnight rain0.2 mm Open ground · 600 m19 mph · gusts 33 mph Morning pack-upDampness possible Sleeping-bag warmthISO comfort rating about -6°C or lower

Moon overnight

Waxing crescent moon

Illuminated disc
36%
Moonrise
Outside this window
Moonset
20:54 GMT

Views of the Moon may come and go through cloud breaks. Illumination describes the sunlit part of the Moon, not brightness at your pitch.

Overnight window: 15 Nov, 17:00 GMT to 16 Nov, 08:00 GMT. Approximate open-horizon times; hills can hide the Moon. Still take a headtorch.

Elevation reference (open ground)

300 m39 · poor
Wind / gust
15 mph / 25 mph
Typical / low
-1.1°C / -2.0°C · much of the night
In cloud
0% of modelled night
Condensation
High
600 m39 · poor
Wind / gust
19 mph / 33 mph
Typical / low
-2.3°C / -3.2°C · much of the night
In cloud
40% of modelled night
Condensation
High
900 m39 · poor
Wind / gust
23 mph / 38 mph
Typical / low
-4.3°C / -5.0°C · much of the night
In cloud
53% of modelled night
Condensation
High

Warmth planning: As a broad starting point, consider a 4-season bag with an ISO/EN comfort rating at or below about -6°C. Allow more margin if you sleep cold or expect fatigue, and use an adequate insulated mat. Dampness is possible, so keep the sleep system dry and ensure its insulation remains effective if damp.

Open-hillside reference. A sheltered pitch may be calmer; cols and ridges may be much windier. Tent design and the exact pitch still matter. Read about sleeping-bag comfort ratings, pitching in strong winds or using the wild-camping forecast.

Did this match your night?Share a quick observation to help improve this beta forecast.Give feedback

Approximate height is enough, please do not share an exact wild-camp location.

Daytime · exposed rockClimbing & scramblingBetaVery poor conditions for exposed scrambling: wet, slippery rock. Poor0 View detailsHide details
Generic exposed-rock guidance

Full climbing & scrambling outlook

Very poor conditions for exposed scrambling. The rock is likely to be wet and slippery through the day. Icy patches are likely on the rock, which makes it treacherous without winter kit. Gusts of 20–30 mph will be noticeable on exposed ridges. Cloud on the tops may make route-finding and retreat harder. The rock around the summit is mostly andesite, a hard volcanic rock. It grips well when dry and is fair when wet, though polished holds on popular routes get slippery. It is generally solid, but shattered in gullies and on broken ground. On the usual routes up you may also cross granite, which has excellent friction when dry and clean and is fair when wet, but greasy where there is lichen or moss. These are general notes for each rock type, taken from geological maps around the summit, so the rock on your line may differ.

Rock surfaceWet rock likelyPeak gust20-30 mphRain5.0 mm
Main factorswet rock likelySnow is likely to be lying on high ground, with further snowfall possible during the day
Representative rock around the summit and along available routes Hornblende-andesite lava Ben Nevis Volcanic Formation
Origin
Igneous
Broad rock-response group
Volcanic rock
Mapping
BGS Geology 50K · 1:50,000
Summit area
Volcanic rock in 100% of 17 BGS samples within 350 m
Rock-response profile
Low confidence
View the summit BGS record

Andesite is a hard volcanic rock. It grips well when dry and is fair when wet, though polished holds on popular routes get slippery. It is generally solid, but shattered in gullies and on broken ground. These are general notes for each rock type, from geological map samples at and around the summit. The rock on your line can differ, and lichen, vegetation and seepage all change how it feels underfoot.

Rock groups along the sampled routes

These are mapped rock groups, not separate weather forecasts or a ranking of route safety.

Ben Nevis

volcanic rock, granite, gneiss or gabbro

Càrn Mòr Dearg and Ben Nevis

volcanic rock, granite, gneiss or gabbro

Geological detail and BGS records
Mapped variation

5 rock types appear in the mapped samples

Samples around the summit inform the main rock-response profile, with the summit pin shown separately where it differs. Route samples add further context, but this is not a continuous geological survey.

Summit-area sample Hornblende-andesite lava Ben Nevis Volcanic Formation 856–1,343 m samples Seen on Ben Nevis, Càrn Mòr Dearg and Ben Nevis

Andesite is a hard volcanic rock. It grips well when dry and is fair when wet, though polished holds on popular routes get slippery. It is generally solid, but shattered in gullies and on broken ground.

BGS record
Route sample Leucomicrogranodiorite Ben Nevis Complex (Inner Granite) 511–1,020 m samples Seen on Ben Nevis, Càrn Mòr Dearg and Ben Nevis

Granite is a coarse, crystalline rock. It has excellent friction when dry and clean and is fair when wet, but greasy where there is lichen or moss. It is generally solid, but weathers into rounded slabs and blocks, and loose granite grit on slabs can roll underfoot like ball bearings.

BGS record
Route sample Porphyritic granodiorite Ben Nevis Complex (Outer Granite) 393–535 m samples Seen on Càrn Mòr Dearg and Ben Nevis

Granite is a coarse, crystalline rock. It has excellent friction when dry and clean and is fair when wet, but greasy where there is lichen or moss. It is generally solid, but weathers into rounded slabs and blocks, and loose granite grit on slabs can roll underfoot like ball bearings.

BGS record
Route sample Lamprophyre Ben Nevis Dyke Swarm Around 174 m Seen on Ben Nevis

Lamprophyre is a dark rock that usually forms thin dykes. It grips reasonably when dry and is poor when wet. It weathers easily and is often crumbly and loose, so treat it with suspicion.

BGS record
Route sample Microgabbro North Britain Palaeogene Dyke Suite Around 354 m Seen on Ben Nevis

Dolerite is a hard, dark, fine-grained rock. It grips well when dry and is fair when wet. It is usually solid, but it often breaks into blocky columns, so check blocks before you pull on them.

BGS record

Generic exposed scrambling terrain; BGS summit-area bedrock samples are included where available, but route grade, exact rock, polish, drainage and escape options remain unresolved. Contains British Geological Survey materials © UKRI 2026. How to use the climbing and scrambling forecast.

Did this match your experience?Tell us about the rock surface and wind to help improve this beta forecast.Give feedback

A broad surface report is enough; you do not need to identify a particular route.

Overnight · Aurora, stars & meteorsAfter darkBetaSome breaks in the cloud, so stars at times. View forecastClose forecast

After dark: aurora and stargazing

Night beginning 2026-11-15. All times are UK local time.

Using the last available sky forecast, updated at 10:56 GMT on 14 Nov. Cloud conditions may have changed. Live aurora guidance is temporarily unavailable.

Stargazing

Very good sky conditions during the best available spell: 16 Nov, 02:00 GMT to 03:00 GMT.

Some breaks in the cloud, so stars at times.

Moon-free dark sky: 15 Nov, 20:50 GMT to 16 Nov, 05:45 GMT.

Sky conditions through the night
Fully dark periods. Conditions can change between forecast hours.
TimeViewing conditions
15 Nov, 18:25 GMT to 19:00 GMTMixed sky conditions

Some forecasts show clear spells, others keep it cloudy; check again nearer the time.

Forecast models disagree.

15 Nov, 19:00 GMT to 20:00 GMTMixed sky conditions

Some forecasts show clear spells, others keep it cloudy; check again nearer the time.

Forecast models disagree.

15 Nov, 20:00 GMT to 21:00 GMTMixed sky conditions

Some forecasts show clear spells, others keep it cloudy; check again nearer the time.

Forecast models disagree.

15 Nov, 21:00 GMT to 22:00 GMTMixed sky conditions

Some forecasts show clear spells, others keep it cloudy; check again nearer the time.

Forecast models disagree.

15 Nov, 22:00 GMT to 23:00 GMTMixed sky conditions

Some forecasts show clear spells, others keep it cloudy; check again nearer the time.

Forecast models disagree.

15 Nov, 23:00 GMT to 16 Nov, 00:00 GMTMixed sky conditions

Some forecasts show clear spells, others keep it cloudy; check again nearer the time.

Forecast models disagree.

16 Nov, 00:00 GMT to 01:00 GMTMixed sky conditions

Some forecasts show clear spells, others keep it cloudy; check again nearer the time.

Forecast models disagree.

16 Nov, 01:00 GMT to 02:00 GMTMixed sky conditions

Some forecasts show clear spells, others keep it cloudy; check again nearer the time.

Forecast models disagree.

16 Nov, 02:00 GMT to 03:00 GMTVery good sky conditions

Some breaks in the cloud, so stars at times.

16 Nov, 03:00 GMT to 04:00 GMTMixed sky conditions

Some forecasts show clear spells, others keep it cloudy; check again nearer the time.

Forecast models disagree.

16 Nov, 04:00 GMT to 05:00 GMTGood sky conditions

Some forecasts show clear spells, others keep it cloudy; check again nearer the time.

Forecast models disagree.

16 Nov, 05:00 GMT to 05:45 GMTMixed sky conditions

Some forecasts show clear spells, others keep it cloudy; check again nearer the time.

Forecast models disagree.

Moon, darkness and meteor showers

Crescent moon, about 36% illuminated.

Moonset around 15 Nov, 20:50 GMT.

Full darkness: 15 Nov, 18:25 GMT to 16 Nov, 05:45 GMT.

Moon times assume an open horizon. Hills can hide the Moon sooner. Moon-free does not mean cloud-free.

Southern Taurids are active on this night. Activity may be much lower away from the peak.

Northern Taurids are active on this night. Activity may be much lower away from the peak.

Leonids are active on this night. Activity may be much lower away from the peak.

  • Southern Taurids: peak around 10 October 2026.
  • Northern Taurids: peak around 12 November 2026.
  • Leonids: peak around 18 November 2026.
  • Geminids: peak around 14 December 2026.
  • Ursids: peak around 22 December 2026.

Dates from the Royal Observatory Greenwich. Activity dates do not guarantee visible meteors. Look across a broad, dark sky, not only north.

Darkness of the surroundings

Estimated darkness rank 483 of 980 assessed peaks (1 is darkest), based on surrounding artificial light in 2021. This is not a measurement of tonight’s sky.

2021 artificial-light baseline, not measured sky brightness or a Bortle class. Changes to lighting, blue-rich LEDs, terrain screening, atmospheric scattering and cloud-reflected light are not resolved. Similar ranks are not meaningfully distinct. Darkness is not a recommendation to climb a summit at night.

VIIRS nighttime lights: Earth Observation Group, Payne Institute for Public Policy, Colorado School of Mines. Reprocessed by OpenGeoHub/OpenLandMap. Cropped and ranked by Mountain Weather.

Terrain at this viewpoint

Approximate terrain horizon at Ben Nevis. Trees, buildings and nearby obstacles are not included.

Approximate bare-earth horizon, not surveyed sightlines. Narrow ridges may fall between samples. Trees, buildings and very close obstacles are not resolved. Valid only at the named summit coordinate, not on its slopes or at a lower campsite.

Mapzen Terrain Tiles. Europe terrain produced using Copernicus data and information funded by the European Union, EU-DEM layers. UK terrain: Environment Agency copyright and/or database right 2015. Global terrain: USGS and NOAA.

Contains Welsh Government public sector information licensed under the Open Government Licence v3.0.

Sky-weather grades exclude light pollution, terrain and thin haze. They are not mountain safety ratings. Check the mountain and camping forecast separately. Accessible lower viewpoints may be a better choice than summits.

Explore the dedicated aurora forecast, meteor shower forecast or dark-sky and astrophotography forecast.

Recommended kit for this dayWeather-aware packing prompts, plus your core hillwalking kitView kit

For a day hillwalk, not a complete route-specific checklist. Carry navigation and backup you can use, warm and waterproof layers, suitable footwear, food and water, a headtorch, emergency shelter, first aid and a way to call for help. Snow, ice, technical terrain and overnight trips need additional equipment and skills.

Does the weather shape your plans?Optional hill-user research. One answer helps; further questions are up to you.Take part

Help the Mountain Decisions Project understand how forecasts influence hill days, including when plans stay the same. Findings will be shared publicly as summaries, not individual responses.

This is about Ben Nevis on Sunday 15 November 2026. It asks about intentions, not whether you actually went out. No name or account is needed.

Open the questions to take part.

About the research and your privacy · Already been out? Share that experience instead

Confidence: Medium
Overall hill weather87Excellent
Summit wind · 08:00-17:0010-25 mph northerly Summit gusts · 08:00-17:0025-35 mph Feels like-14 to -10°C PrecipitationLittle or none Cloud-free summit estimate70% Cloud base through day1,300-2,000 m Freezing level500-800 m DaylightSunrise 08:01 · Sunset 16:06 · 8.1 hours daylight

The day on the hill

A fine day on Ben Nevis: dry and breezy, though expect a bitter wind chill.

Wind

On the summit expect a northerly wind of 10–25 mph for most of the day, with gusts of 25–35 mph at the windiest. Lower down on the open hillside the wind will be light, under 5 mph. Gusts like that will be noticeable on ridges and open tops, and you will chill quickly when you stop.

Cloud and visibility

The tops should stay mostly clear of cloud. A few forecast models bring the cloud base down to around 400–700 m at times. The cloud base sits close to summit height, so the top could go in and out of cloud at short notice. Good spells of sunshine are likely. The air should be clear, so expect far-reaching views as long as the tops stay clear.

Rain and ground

It should stay dry. It will be wet underfoot after recent rain.

Warmth and kit

On the tops it will be around -6 to -2°C, feeling like -14 to -10°C in the wind. The freezing level is around 500–800 m, so it will be below freezing on the tops. Hat, gloves and a warm insulated layer are essential, with extra warmth for stops.

Daylight

A short day, with only about 8 hours of daylight. Sunset is around 4:05pm, so allow time to get off the hill before dark, and carry a head torch.

Forecast confidence

There is some disagreement between forecast models on wind strength. It's still two days off and could change, so check again nearer the time.

Sunshine context Model-grid estimate, not summit sunshine

The surrounding model grid indicates 6.9 h of sunshine. This is not a forecast of time in sunshine on the summit. Use the cloud and views outlook above for the conditions on this mountain.

Early
1 h
Midday
4 h
Later
0 h

Overnight forecast: 17:00–08:00 (UK local time), in Wild camping below.

Morning · 08:00–12:00 Good Summit winds around 15-25 mph. Gusts around 25-35 mph are possible on exposed ground.
80
Afternoon · 12:00–17:00 Excellent Summit winds around 10-20 mph. Gusts around 15-25 mph are possible on exposed ground.
94

Compare an early start with later conditions. The main forecast above covers the day in more detail.

Overnight · 17:00–08:00Wild campingBetaToo windy for an exposed pitch up around 900 m (gusts of about 40 mph and a frost, down to -2°C). Lower down, a mixed night to camp, mainly because of the wind. 39Poor · 600 m View detailsHide details
Night beginning Monday 16 November 2026

Full overnight outlook

Too windy for an exposed pitch up around 900 m. Lower down, a mixed night to camp, mainly because of the wind. Gusts reach about 40 mph around 900 m and nearer 30 mph around 300 m, which makes for a noisy, testing night even in a good tent. Pitch low down and in real shelter, or leave it for another night. It should stay dry. A frost above about 600 m, down to about -2°C. A warm 3-season or 3–4 season bag rated to about -4°C comfort, and a warm mat, should do. Allow more if you sleep cold.

Overnight rain0.0 mm Open ground · 600 m18 mph · gusts 34 mph Morning pack-upNo wet signal Sleeping-bag warmthISO comfort rating about -4°C or lower

Moon overnight

First-quarter moon

Illuminated disc
46%
Moonrise
Outside this window
Moonset
22:15 GMT

Views of the Moon may come and go through cloud breaks. Illumination describes the sunlit part of the Moon, not brightness at your pitch.

Overnight window: 16 Nov, 17:00 GMT to 17 Nov, 08:00 GMT. Approximate open-horizon times; hills can hide the Moon. Still take a headtorch.

Elevation reference (open ground)

300 m59 · mixed
Wind / gust
14 mph / 28 mph
Typical / low
2.4°C / 0.7°C · much of the night
In cloud
0% of modelled night
Condensation
Low
600 m39 · poor
Wind / gust
18 mph / 34 mph
Typical / low
0.6°C / -0.2°C · much of the night
In cloud
0% of modelled night
Condensation
Low
900 m19 · very poor
Wind / gust
21 mph / 40 mph
Typical / low
-1.4°C / -1.6°C · much of the night
In cloud
0% of modelled night
Condensation
Low

Warmth planning: As a broad starting point, consider a warm 3-season or 3–4 season bag with an ISO/EN comfort rating at or below about -4°C. Allow more margin if you sleep cold or expect fatigue, and use an adequate insulated mat. Dampness is possible, so keep the sleep system dry and ensure its insulation remains effective if damp.

Open-hillside reference. A sheltered pitch may be calmer; cols and ridges may be much windier. Tent design and the exact pitch still matter. Read about sleeping-bag comfort ratings, pitching in strong winds or using the wild-camping forecast.

Did this match your night?Share a quick observation to help improve this beta forecast.Give feedback

Approximate height is enough, please do not share an exact wild-camp location.

Daytime · exposed rockClimbing & scramblingBetaPoor conditions for exposed scrambling. Poor25 View detailsHide details
Generic exposed-rock guidance

Full climbing & scrambling outlook

Poor conditions for exposed scrambling. After recent rain the rock may still be wet in places, especially shaded holds and drainage lines. Icy patches are likely on the rock, which makes it treacherous without winter kit. Gusts of 25–35 mph could throw you off balance on exposed moves and ridges. The rock around the summit is mostly andesite, a hard volcanic rock. It grips well when dry and is fair when wet, though polished holds on popular routes get slippery. It is generally solid, but shattered in gullies and on broken ground. On the usual routes up you may also cross granite, which has excellent friction when dry and clean and is fair when wet, but greasy where there is lichen or moss. These are general notes for each rock type, taken from geological maps around the summit, so the rock on your line may differ.

Rock surfaceDry overhead; seepage uncertainPeak gust25-35 mphRain0.0 mm
Main factorsdamp or incompletely dried rock possibleSnow is likely to be lying on high ground. Scrambling may require winter mountaineering skills and equipment
Representative rock around the summit and along available routes Hornblende-andesite lava Ben Nevis Volcanic Formation
Origin
Igneous
Broad rock-response group
Volcanic rock
Mapping
BGS Geology 50K · 1:50,000
Summit area
Volcanic rock in 100% of 17 BGS samples within 350 m
Rock-response profile
Low confidence
View the summit BGS record

Andesite is a hard volcanic rock. It grips well when dry and is fair when wet, though polished holds on popular routes get slippery. It is generally solid, but shattered in gullies and on broken ground. These are general notes for each rock type, from geological map samples at and around the summit. The rock on your line can differ, and lichen, vegetation and seepage all change how it feels underfoot.

Rock groups along the sampled routes

These are mapped rock groups, not separate weather forecasts or a ranking of route safety.

Ben Nevis

volcanic rock, granite, gneiss or gabbro

Càrn Mòr Dearg and Ben Nevis

volcanic rock, granite, gneiss or gabbro

Geological detail and BGS records
Mapped variation

5 rock types appear in the mapped samples

Samples around the summit inform the main rock-response profile, with the summit pin shown separately where it differs. Route samples add further context, but this is not a continuous geological survey.

Summit-area sample Hornblende-andesite lava Ben Nevis Volcanic Formation 856–1,343 m samples Seen on Ben Nevis, Càrn Mòr Dearg and Ben Nevis

Andesite is a hard volcanic rock. It grips well when dry and is fair when wet, though polished holds on popular routes get slippery. It is generally solid, but shattered in gullies and on broken ground.

BGS record
Route sample Leucomicrogranodiorite Ben Nevis Complex (Inner Granite) 511–1,020 m samples Seen on Ben Nevis, Càrn Mòr Dearg and Ben Nevis

Granite is a coarse, crystalline rock. It has excellent friction when dry and clean and is fair when wet, but greasy where there is lichen or moss. It is generally solid, but weathers into rounded slabs and blocks, and loose granite grit on slabs can roll underfoot like ball bearings.

BGS record
Route sample Porphyritic granodiorite Ben Nevis Complex (Outer Granite) 393–535 m samples Seen on Càrn Mòr Dearg and Ben Nevis

Granite is a coarse, crystalline rock. It has excellent friction when dry and clean and is fair when wet, but greasy where there is lichen or moss. It is generally solid, but weathers into rounded slabs and blocks, and loose granite grit on slabs can roll underfoot like ball bearings.

BGS record
Route sample Lamprophyre Ben Nevis Dyke Swarm Around 174 m Seen on Ben Nevis

Lamprophyre is a dark rock that usually forms thin dykes. It grips reasonably when dry and is poor when wet. It weathers easily and is often crumbly and loose, so treat it with suspicion.

BGS record
Route sample Microgabbro North Britain Palaeogene Dyke Suite Around 354 m Seen on Ben Nevis

Dolerite is a hard, dark, fine-grained rock. It grips well when dry and is fair when wet. It is usually solid, but it often breaks into blocky columns, so check blocks before you pull on them.

BGS record

Generic exposed scrambling terrain; BGS summit-area bedrock samples are included where available, but route grade, exact rock, polish, drainage and escape options remain unresolved. Contains British Geological Survey materials © UKRI 2026. How to use the climbing and scrambling forecast.

Did this match your experience?Tell us about the rock surface and wind to help improve this beta forecast.Give feedback

A broad surface report is enough; you do not need to identify a particular route.

Overnight · Aurora, stars & meteorsAfter darkBetaSome forecasts show clear spells, others keep it cloudy; check again nearer the time. View forecastClose forecast

After dark: aurora and stargazing

Night beginning 2026-11-16. All times are UK local time.

Using the last available sky forecast, updated at 10:56 GMT on 14 Nov. Cloud conditions may have changed. Live aurora guidance is temporarily unavailable.

Stargazing

Poor sky conditions during the best available spell: 16 Nov, 19:00 GMT to 20:00 GMT.

Some forecasts show clear spells, others keep it cloudy; check again nearer the time.

Moon-free dark sky: 16 Nov, 22:15 GMT to 17 Nov, 05:50 GMT.

Sky conditions through the night
Fully dark periods. Conditions can change between forecast hours.
TimeViewing conditions
16 Nov, 18:20 GMT to 19:00 GMTPoor sky conditions

Some forecasts show clear spells, others keep it cloudy; check again nearer the time.

Forecast models disagree.

16 Nov, 19:00 GMT to 20:00 GMTPoor sky conditions

Some forecasts show clear spells, others keep it cloudy; check again nearer the time.

Forecast models disagree.

16 Nov, 20:00 GMT to 21:00 GMTPoor sky conditions

Mostly cloudy, so little chance of seeing the stars.

16 Nov, 21:00 GMT to 22:00 GMTPoor sky conditions

Mostly cloudy, so little chance of seeing the stars.

16 Nov, 22:00 GMT to 23:00 GMTPoor sky conditions

Mostly cloudy, so little chance of seeing the stars.

16 Nov, 23:00 GMT to 17 Nov, 00:00 GMTPoor sky conditions

Mostly cloudy, so little chance of seeing the stars.

17 Nov, 00:00 GMT to 01:00 GMTPoor sky conditions

Mostly cloudy, so little chance of seeing the stars.

17 Nov, 01:00 GMT to 02:00 GMTPoor sky conditions

Mostly cloudy, so little chance of seeing the stars.

17 Nov, 02:00 GMT to 03:00 GMTPoor sky conditions

Mostly cloudy, so little chance of seeing the stars.

17 Nov, 03:00 GMT to 04:00 GMTPoor sky conditions

Mostly cloudy, so little chance of seeing the stars.

17 Nov, 04:00 GMT to 05:00 GMTPoor sky conditions

Mostly cloudy, so little chance of seeing the stars. Rain at times. Hazy, which dims the fainter stars.

17 Nov, 05:00 GMT to 05:50 GMTPoor sky conditions

Mostly cloudy, so little chance of seeing the stars. Rain at times. Hazy, which dims the fainter stars.

Moon, darkness and meteor showers

Around half moon, about 46% illuminated.

Moonset around 16 Nov, 22:15 GMT.

Full darkness: 16 Nov, 18:20 GMT to 17 Nov, 05:50 GMT.

Moon times assume an open horizon. Hills can hide the Moon sooner. Moon-free does not mean cloud-free.

Southern Taurids are active on this night. Activity may be much lower away from the peak.

Northern Taurids are active on this night. Activity may be much lower away from the peak.

Leonids are active on this night. Activity may be much lower away from the peak.

  • Southern Taurids: peak around 10 October 2026.
  • Northern Taurids: peak around 12 November 2026.
  • Leonids: peak around 18 November 2026.
  • Geminids: peak around 14 December 2026.
  • Ursids: peak around 22 December 2026.

Dates from the Royal Observatory Greenwich. Activity dates do not guarantee visible meteors. Look across a broad, dark sky, not only north.

Darkness of the surroundings

Estimated darkness rank 483 of 980 assessed peaks (1 is darkest), based on surrounding artificial light in 2021. This is not a measurement of tonight’s sky.

2021 artificial-light baseline, not measured sky brightness or a Bortle class. Changes to lighting, blue-rich LEDs, terrain screening, atmospheric scattering and cloud-reflected light are not resolved. Similar ranks are not meaningfully distinct. Darkness is not a recommendation to climb a summit at night.

VIIRS nighttime lights: Earth Observation Group, Payne Institute for Public Policy, Colorado School of Mines. Reprocessed by OpenGeoHub/OpenLandMap. Cropped and ranked by Mountain Weather.

Terrain at this viewpoint

Approximate terrain horizon at Ben Nevis. Trees, buildings and nearby obstacles are not included.

Approximate bare-earth horizon, not surveyed sightlines. Narrow ridges may fall between samples. Trees, buildings and very close obstacles are not resolved. Valid only at the named summit coordinate, not on its slopes or at a lower campsite.

Mapzen Terrain Tiles. Europe terrain produced using Copernicus data and information funded by the European Union, EU-DEM layers. UK terrain: Environment Agency copyright and/or database right 2015. Global terrain: USGS and NOAA.

Contains Welsh Government public sector information licensed under the Open Government Licence v3.0.

Sky-weather grades exclude light pollution, terrain and thin haze. They are not mountain safety ratings. Check the mountain and camping forecast separately. Accessible lower viewpoints may be a better choice than summits.

Explore the dedicated aurora forecast, meteor shower forecast or dark-sky and astrophotography forecast.

Recommended kit for this dayWeather-aware packing prompts, plus your core hillwalking kitView kit

For a day hillwalk, not a complete route-specific checklist. Carry navigation and backup you can use, warm and waterproof layers, suitable footwear, food and water, a headtorch, emergency shelter, first aid and a way to call for help. Snow, ice, technical terrain and overnight trips need additional equipment and skills.

Does the weather shape your plans?Optional hill-user research. One answer helps; further questions are up to you.Take part

Help the Mountain Decisions Project understand how forecasts influence hill days, including when plans stay the same. Findings will be shared publicly as summaries, not individual responses.

This is about Ben Nevis on Monday 16 November 2026. It asks about intentions, not whether you actually went out. No name or account is needed.

Open the questions to take part.

About the research and your privacy · Already been out? Share that experience instead

Confidence: Medium
Overall hill weather61Mixed
Summit wind · 08:00-17:0010-25 mph easterly Summit gusts · 08:00-17:0030-40 mph Feels like-18 to -14°C PrecipitationLittle or none Cloud-free summit estimate70% Freezing level400-700 m DaylightSunrise 08:03 · Sunset 16:05 · 8.0 hours daylight

The day on the hill

A mixed day on Ben Nevis, with a bitter wind chill.

Wind

On the summit expect an easterly wind of 10–25 mph for most of the day, with gusts of 30–40 mph at the windiest. Lower down on the open hillside the wind will be light, under 10 mph. Gusts like that will be noticeable on ridges and open tops, and you will chill quickly when you stop.

Cloud and visibility

The tops should stay mostly clear of cloud. The air should be clear, so expect far-reaching views as long as the tops stay clear.

Rain and ground

Mostly dry, but some forecast models bring rain in the morning. It will be wet underfoot after recent rain.

Warmth and kit

On the tops it will be around -10 to -6°C, feeling like -18 to -14°C in the wind. The freezing level is around 500–800 m, so it will be below freezing on the tops. Hat, gloves and a warm insulated layer are essential, with extra warmth for stops.

Daylight

A short day, with only about 8 hours of daylight. Sunset is around 4:05pm, so allow time to get off the hill before dark, and carry a head torch.

Forecast confidence

Cloud height is hard to pin down, so the summit could be in or out of cloud at short notice. It's still three days off and could change, so check again nearer the time.

Sunshine context Model-grid estimate, not summit sunshine

The surrounding model grid indicates 0 h of sunshine. This is not a forecast of time in sunshine on the summit. Use the cloud and views outlook above for the conditions on this mountain.

Early
0 h
Midday
0 h
Later
0 h

Overnight forecast: 17:00–08:00 (UK local time), in Wild camping below.

Morning · 08:00–12:00 Mixed Summit winds around 15-25 mph. Gusts around 30-40 mph are possible on exposed ground. Some forecast models bring rain during the morning, while others keep it mostly dry.
52
Afternoon · 12:00–17:00 Good Summit winds around 10-20 mph. Gusts around 20-30 mph are possible on exposed ground. Some forecast models bring rain during the afternoon, while others keep it mostly dry.
70

Compare an early start with later conditions. The main forecast above covers the day in more detail.

Overnight · 17:00–08:00Wild campingBetaA poor night to camp on open ground: a frost, down to -3°C. 39Poor · 600 m View detailsHide details
Night beginning Tuesday 17 November 2026

Full overnight outlook

A poor night to camp on open ground. Light winds on open ground, gusting no more than about 25 mph. It should stay dry. A frost above about 600 m, down to about -3°C. A warm 3-season or 3–4 season bag rated to about -4°C comfort, and a warm mat, should do. Allow more if you sleep cold.

Overnight rain0.0 mm Open ground · 600 m13 mph · gusts 20 mph Morning pack-upNo wet signal Sleeping-bag warmthISO comfort rating about -4°C or lower

Moon overnight

Waxing gibbous moon

Illuminated disc
55%
Moonrise
Outside this window
Moonset
23:36 GMT

Extensive cloud may limit moonlight. Illumination describes the sunlit part of the Moon, not brightness at your pitch.

Overnight window: 17 Nov, 17:00 GMT to 18 Nov, 08:00 GMT. Approximate open-horizon times; hills can hide the Moon. Still take a headtorch.

Elevation reference (open ground)

300 m59 · mixed
Wind / gust
10 mph / 17 mph
Typical / low
1.6°C / 0.7°C · much of the night
In cloud
0% of modelled night
Condensation
Low
600 m39 · poor
Wind / gust
13 mph / 20 mph
Typical / low
-0.4°C / -1.1°C · much of the night
In cloud
0% of modelled night
Condensation
Low
900 m39 · poor
Wind / gust
15 mph / 24 mph
Typical / low
-2.4°C / -2.8°C · much of the night
In cloud
13% of modelled night
Condensation
Low

Warmth planning: As a broad starting point, consider a warm 3-season or 3–4 season bag with an ISO/EN comfort rating at or below about -4°C. Allow more margin if you sleep cold or expect fatigue, and use an adequate insulated mat. Dampness is possible, so keep the sleep system dry and ensure its insulation remains effective if damp.

Open-hillside reference. A sheltered pitch may be calmer; cols and ridges may be much windier. Tent design and the exact pitch still matter. Read about sleeping-bag comfort ratings, pitching in strong winds or using the wild-camping forecast.

Did this match your night?Share a quick observation to help improve this beta forecast.Give feedback

Approximate height is enough, please do not share an exact wild-camp location.

Daytime · exposed rockClimbing & scramblingBetaVery poor conditions for exposed scrambling. Poor0 View detailsHide details
Generic exposed-rock guidance

Full climbing & scrambling outlook

Very poor conditions for exposed scrambling. After recent rain the rock may still be wet in places, especially shaded holds and drainage lines. Icy patches are likely on the rock, which makes it treacherous without winter kit. Gusts of 30–40 mph could throw you off balance on exposed moves and ridges. The rock around the summit is mostly andesite, a hard volcanic rock. It grips well when dry and is fair when wet, though polished holds on popular routes get slippery. It is generally solid, but shattered in gullies and on broken ground. On the usual routes up you may also cross granite, which has excellent friction when dry and clean and is fair when wet, but greasy where there is lichen or moss. These are general notes for each rock type, taken from geological maps around the summit, so the rock on your line may differ.

Rock surfaceDry overhead; seepage uncertainPeak gust30-40 mphRainPossible · 85%
Main factorsgusts of 30–40 mphdamp or incompletely dried rock possibleSnow is likely to be lying on high ground. Scrambling may require winter mountaineering skills and equipment
Representative rock around the summit and along available routes Hornblende-andesite lava Ben Nevis Volcanic Formation
Origin
Igneous
Broad rock-response group
Volcanic rock
Mapping
BGS Geology 50K · 1:50,000
Summit area
Volcanic rock in 100% of 17 BGS samples within 350 m
Rock-response profile
Low confidence
View the summit BGS record

Andesite is a hard volcanic rock. It grips well when dry and is fair when wet, though polished holds on popular routes get slippery. It is generally solid, but shattered in gullies and on broken ground. These are general notes for each rock type, from geological map samples at and around the summit. The rock on your line can differ, and lichen, vegetation and seepage all change how it feels underfoot.

Rock groups along the sampled routes

These are mapped rock groups, not separate weather forecasts or a ranking of route safety.

Ben Nevis

volcanic rock, granite, gneiss or gabbro

Càrn Mòr Dearg and Ben Nevis

volcanic rock, granite, gneiss or gabbro

Geological detail and BGS records
Mapped variation

5 rock types appear in the mapped samples

Samples around the summit inform the main rock-response profile, with the summit pin shown separately where it differs. Route samples add further context, but this is not a continuous geological survey.

Summit-area sample Hornblende-andesite lava Ben Nevis Volcanic Formation 856–1,343 m samples Seen on Ben Nevis, Càrn Mòr Dearg and Ben Nevis

Andesite is a hard volcanic rock. It grips well when dry and is fair when wet, though polished holds on popular routes get slippery. It is generally solid, but shattered in gullies and on broken ground.

BGS record
Route sample Leucomicrogranodiorite Ben Nevis Complex (Inner Granite) 511–1,020 m samples Seen on Ben Nevis, Càrn Mòr Dearg and Ben Nevis

Granite is a coarse, crystalline rock. It has excellent friction when dry and clean and is fair when wet, but greasy where there is lichen or moss. It is generally solid, but weathers into rounded slabs and blocks, and loose granite grit on slabs can roll underfoot like ball bearings.

BGS record
Route sample Porphyritic granodiorite Ben Nevis Complex (Outer Granite) 393–535 m samples Seen on Càrn Mòr Dearg and Ben Nevis

Granite is a coarse, crystalline rock. It has excellent friction when dry and clean and is fair when wet, but greasy where there is lichen or moss. It is generally solid, but weathers into rounded slabs and blocks, and loose granite grit on slabs can roll underfoot like ball bearings.

BGS record
Route sample Lamprophyre Ben Nevis Dyke Swarm Around 174 m Seen on Ben Nevis

Lamprophyre is a dark rock that usually forms thin dykes. It grips reasonably when dry and is poor when wet. It weathers easily and is often crumbly and loose, so treat it with suspicion.

BGS record
Route sample Microgabbro North Britain Palaeogene Dyke Suite Around 354 m Seen on Ben Nevis

Dolerite is a hard, dark, fine-grained rock. It grips well when dry and is fair when wet. It is usually solid, but it often breaks into blocky columns, so check blocks before you pull on them.

BGS record

Generic exposed scrambling terrain; BGS summit-area bedrock samples are included where available, but route grade, exact rock, polish, drainage and escape options remain unresolved. Contains British Geological Survey materials © UKRI 2026. How to use the climbing and scrambling forecast.

Did this match your experience?Tell us about the rock surface and wind to help improve this beta forecast.Give feedback

A broad surface report is enough; you do not need to identify a particular route.

Overnight · Aurora, stars & meteorsAfter darkBetaMostly cloudy, so little chance of seeing the stars. View forecastClose forecast

After dark: aurora and stargazing

Night beginning 2026-11-17. All times are UK local time.

Using the last available sky forecast, updated at 10:56 GMT on 14 Nov. Cloud conditions may have changed. Live aurora guidance is temporarily unavailable.

Stargazing

Poor sky conditions during the best available spell: 18 Nov, 03:00 GMT to 04:00 GMT.

Mostly cloudy, so little chance of seeing the stars.

Moon-free dark sky: 17 Nov, 23:40 GMT to 18 Nov, 05:50 GMT.

Sky conditions through the night
Fully dark periods. Conditions can change between forecast hours.
TimeViewing conditions
17 Nov, 18:20 GMT to 19:00 GMTPoor sky conditions

Mostly cloudy, so little chance of seeing the stars. Rain at times. Hazy, which dims the fainter stars.

17 Nov, 19:00 GMT to 20:00 GMTPoor sky conditions

Mostly cloudy, so little chance of seeing the stars. Rain at times. Hazy, which dims the fainter stars.

17 Nov, 20:00 GMT to 21:00 GMTPoor sky conditions

Mostly cloudy, so little chance of seeing the stars. Rain at times. Hazy, which dims the fainter stars.

17 Nov, 21:00 GMT to 22:00 GMTPoor sky conditions

Mostly cloudy, so little chance of seeing the stars. Hazy, which dims the fainter stars.

17 Nov, 22:00 GMT to 23:00 GMTPoor sky conditions

Mostly cloudy, so little chance of seeing the stars.

17 Nov, 23:00 GMT to 18 Nov, 00:00 GMTPoor sky conditions

Mostly cloudy, so little chance of seeing the stars.

18 Nov, 00:00 GMT to 01:00 GMTPoor sky conditions

Mostly cloudy, so little chance of seeing the stars.

18 Nov, 01:00 GMT to 02:00 GMTPoor sky conditions

Mostly cloudy, so little chance of seeing the stars.

18 Nov, 02:00 GMT to 03:00 GMTPoor sky conditions

Mostly cloudy, so little chance of seeing the stars.

18 Nov, 03:00 GMT to 04:00 GMTPoor sky conditions

Mostly cloudy, so little chance of seeing the stars.

18 Nov, 04:00 GMT to 05:00 GMTPoor sky conditions

Mostly cloudy, so little chance of seeing the stars.

18 Nov, 05:00 GMT to 05:50 GMTPoor sky conditions

Mostly cloudy, so little chance of seeing the stars.

Moon, darkness and meteor showers

Gibbous moon, about 56% illuminated.

Moonset around 17 Nov, 23:40 GMT.

Full darkness: 17 Nov, 18:20 GMT to 18 Nov, 05:50 GMT.

Moon times assume an open horizon. Hills can hide the Moon sooner. Moon-free does not mean cloud-free.

Southern Taurids are active on this night. Activity may be much lower away from the peak.

Northern Taurids are active on this night. Activity may be much lower away from the peak.

Leonids are active on this night. Activity may be much lower away from the peak.

  • Southern Taurids: peak around 10 October 2026.
  • Northern Taurids: peak around 12 November 2026.
  • Leonids: peak around 18 November 2026.
  • Geminids: peak around 14 December 2026.
  • Ursids: peak around 22 December 2026.

Dates from the Royal Observatory Greenwich. Activity dates do not guarantee visible meteors. Look across a broad, dark sky, not only north.

Darkness of the surroundings

Estimated darkness rank 483 of 980 assessed peaks (1 is darkest), based on surrounding artificial light in 2021. This is not a measurement of tonight’s sky.

2021 artificial-light baseline, not measured sky brightness or a Bortle class. Changes to lighting, blue-rich LEDs, terrain screening, atmospheric scattering and cloud-reflected light are not resolved. Similar ranks are not meaningfully distinct. Darkness is not a recommendation to climb a summit at night.

VIIRS nighttime lights: Earth Observation Group, Payne Institute for Public Policy, Colorado School of Mines. Reprocessed by OpenGeoHub/OpenLandMap. Cropped and ranked by Mountain Weather.

Terrain at this viewpoint

Approximate terrain horizon at Ben Nevis. Trees, buildings and nearby obstacles are not included.

Approximate bare-earth horizon, not surveyed sightlines. Narrow ridges may fall between samples. Trees, buildings and very close obstacles are not resolved. Valid only at the named summit coordinate, not on its slopes or at a lower campsite.

Mapzen Terrain Tiles. Europe terrain produced using Copernicus data and information funded by the European Union, EU-DEM layers. UK terrain: Environment Agency copyright and/or database right 2015. Global terrain: USGS and NOAA.

Contains Welsh Government public sector information licensed under the Open Government Licence v3.0.

Sky-weather grades exclude light pollution, terrain and thin haze. They are not mountain safety ratings. Check the mountain and camping forecast separately. Accessible lower viewpoints may be a better choice than summits.

Explore the dedicated aurora forecast, meteor shower forecast or dark-sky and astrophotography forecast.

Recommended kit for this dayWeather-aware packing prompts, plus your core hillwalking kitView kit

For a day hillwalk, not a complete route-specific checklist. Carry navigation and backup you can use, warm and waterproof layers, suitable footwear, food and water, a headtorch, emergency shelter, first aid and a way to call for help. Snow, ice, technical terrain and overnight trips need additional equipment and skills.

Does the weather shape your plans?Optional hill-user research. One answer helps; further questions are up to you.Take part

Help the Mountain Decisions Project understand how forecasts influence hill days, including when plans stay the same. Findings will be shared publicly as summaries, not individual responses.

This is about Ben Nevis on Tuesday 17 November 2026. It asks about intentions, not whether you actually went out. No name or account is needed.

Open the questions to take part.

About the research and your privacy · Already been out? Share that experience instead

Confidence: Medium
Overall hill weather80Good
Summit wind · 08:00-17:0010-25 mph northerly Summit gusts · 08:00-17:0020-30 mph Feels like-18 to -14°C PrecipitationLittle or none Cloud-free summit estimate65% Freezing level500-800 m DaylightSunrise 08:05 · Sunset 16:03 · 8.0 hours daylight

The day on the hill

A good day on Ben Nevis, though expect a bitter wind chill.

Wind

On the summit expect a northerly wind of 10–25 mph for most of the day, with gusts of 20–30 mph at the windiest. Lower down on the open hillside the wind will be light, under 5 mph. A wind like that will be noticeable on ridges and open tops, and you will chill quickly when you stop.

Cloud and visibility

The tops should stay mostly clear of cloud. A few forecast models bring the cloud base down to around 800–1100 m at times. Good spells of sunshine are likely. The air should be clear, so expect far-reaching views whenever the tops come out of the cloud.

Rain and ground

It should stay dry.

Warmth and kit

On the tops it will be around -10 to -6°C, feeling like -18 to -14°C in the wind. The freezing level is around 500–800 m, so it will be below freezing on the tops. Hat, gloves and a warm insulated layer are essential, with extra warmth for stops.

Daylight

A short day, with only about 8 hours of daylight. Sunset is around 4:05pm, so allow time to get off the hill before dark, and carry a head torch.

Forecast confidence

There is some disagreement between forecast models on wind strength. It's still four days off and could change, so check again nearer the time.

Sunshine context Model-grid estimate, not summit sunshine

The surrounding model grid indicates 6.4 h of sunshine. This is not a forecast of time in sunshine on the summit. Use the cloud and views outlook above for the conditions on this mountain.

Early
0.9 h
Midday
4 h
Later
0 h

Overnight forecast: 17:00–08:00 (UK local time), in Wild camping below.

Morning · 08:00–12:00 Good Summit winds around 15-25 mph. Gusts around 20-30 mph are possible on exposed ground.
77
Afternoon · 12:00–17:00 Good Summit winds around 10-25 mph. Gusts around 20-30 mph are possible on exposed ground.
84

Compare an early start with later conditions. The main forecast above covers the day in more detail.

Overnight · 17:00–08:00Wild campingBetaA mixed night to camp, mainly because of the cold: a frost, down to -2°C. 59Mixed · 600 m View detailsHide details
Night beginning Wednesday 18 November 2026

Full overnight outlook

A mixed night to camp, mainly because of the cold. Light winds on open ground, gusting no more than about 15 mph. It should stay dry. A frost up around 900 m, down to about -2°C. A warm 3-season or 3–4 season bag rated to about -2°C comfort, and a warm mat, should do. Allow more if you sleep cold.

Overnight rain0.0 mm Open ground · 600 m5 mph · gusts 13 mph Morning pack-upNo wet signal Sleeping-bag warmthISO comfort rating about -2°C or lower

Moon overnight

Waxing gibbous moon

Illuminated disc
65%
Moonrise
Outside this window
Moonset
00:58 next morning GMT

Clear spells may allow a view of the Moon. Illumination describes the sunlit part of the Moon, not brightness at your pitch.

Overnight window: 18 Nov, 17:00 GMT to 19 Nov, 08:00 GMT. Approximate open-horizon times; hills can hide the Moon. Still take a headtorch.

Elevation reference (open ground)

300 m59 · mixed
Wind / gust
4 mph / 11 mph
Typical / low
1.6°C / 0.6°C · much of the night
In cloud
0% of modelled night
Condensation
Low
600 m59 · mixed
Wind / gust
5 mph / 13 mph
Typical / low
0.6°C / 0.4°C · much of the night
In cloud
0% of modelled night
Condensation
Low
900 m39 · poor
Wind / gust
5 mph / 16 mph
Typical / low
-1.7°C / -2.3°C · much of the night
In cloud
0% of modelled night
Condensation
Low

Warmth planning: As a broad starting point, consider a warm 3-season or 3–4 season bag with an ISO/EN comfort rating at or below about -2°C. Allow more margin if you sleep cold or expect fatigue, and use an adequate insulated mat. Dampness is possible, so keep the sleep system dry and ensure its insulation remains effective if damp.

Open-hillside reference. A sheltered pitch may be calmer; cols and ridges may be much windier. Tent design and the exact pitch still matter. Read about sleeping-bag comfort ratings, pitching in strong winds or using the wild-camping forecast.

Did this match your night?Share a quick observation to help improve this beta forecast.Give feedback

Approximate height is enough, please do not share an exact wild-camp location.

Daytime · exposed rockClimbing & scramblingBetaPoor conditions for exposed scrambling. Poor27 View detailsHide details
Generic exposed-rock guidance

Full climbing & scrambling outlook

Poor conditions for exposed scrambling. It should stay mostly dry, but a passing shower could leave the rock damp and slippery. Snow is likely on the rock and ledges, so it becomes a winter route. Gusts of 20–30 mph will be noticeable on exposed ridges. The rock around the summit is mostly andesite, a hard volcanic rock. It grips well when dry and is fair when wet, though polished holds on popular routes get slippery. It is generally solid, but shattered in gullies and on broken ground. On the usual routes up you may also cross granite, which has excellent friction when dry and clean and is fair when wet, but greasy where there is lichen or moss. These are general notes for each rock type, taken from geological maps around the summit, so the rock on your line may differ.

Rock surfaceDry initially; rain possiblePeak gust20-30 mphRainPossible · 25%
Main factorsrain possible despite mostly dry conditions being favouredSnow is likely to be lying on high ground. Scrambling may require winter mountaineering skills and equipment
Representative rock around the summit and along available routes Hornblende-andesite lava Ben Nevis Volcanic Formation
Origin
Igneous
Broad rock-response group
Volcanic rock
Mapping
BGS Geology 50K · 1:50,000
Summit area
Volcanic rock in 100% of 17 BGS samples within 350 m
Rock-response profile
Low confidence
View the summit BGS record

Andesite is a hard volcanic rock. It grips well when dry and is fair when wet, though polished holds on popular routes get slippery. It is generally solid, but shattered in gullies and on broken ground. These are general notes for each rock type, from geological map samples at and around the summit. The rock on your line can differ, and lichen, vegetation and seepage all change how it feels underfoot.

Rock groups along the sampled routes

These are mapped rock groups, not separate weather forecasts or a ranking of route safety.

Ben Nevis

volcanic rock, granite, gneiss or gabbro

Càrn Mòr Dearg and Ben Nevis

volcanic rock, granite, gneiss or gabbro

Geological detail and BGS records
Mapped variation

5 rock types appear in the mapped samples

Samples around the summit inform the main rock-response profile, with the summit pin shown separately where it differs. Route samples add further context, but this is not a continuous geological survey.

Summit-area sample Hornblende-andesite lava Ben Nevis Volcanic Formation 856–1,343 m samples Seen on Ben Nevis, Càrn Mòr Dearg and Ben Nevis

Andesite is a hard volcanic rock. It grips well when dry and is fair when wet, though polished holds on popular routes get slippery. It is generally solid, but shattered in gullies and on broken ground.

BGS record
Route sample Leucomicrogranodiorite Ben Nevis Complex (Inner Granite) 511–1,020 m samples Seen on Ben Nevis, Càrn Mòr Dearg and Ben Nevis

Granite is a coarse, crystalline rock. It has excellent friction when dry and clean and is fair when wet, but greasy where there is lichen or moss. It is generally solid, but weathers into rounded slabs and blocks, and loose granite grit on slabs can roll underfoot like ball bearings.

BGS record
Route sample Porphyritic granodiorite Ben Nevis Complex (Outer Granite) 393–535 m samples Seen on Càrn Mòr Dearg and Ben Nevis

Granite is a coarse, crystalline rock. It has excellent friction when dry and clean and is fair when wet, but greasy where there is lichen or moss. It is generally solid, but weathers into rounded slabs and blocks, and loose granite grit on slabs can roll underfoot like ball bearings.

BGS record
Route sample Lamprophyre Ben Nevis Dyke Swarm Around 174 m Seen on Ben Nevis

Lamprophyre is a dark rock that usually forms thin dykes. It grips reasonably when dry and is poor when wet. It weathers easily and is often crumbly and loose, so treat it with suspicion.

BGS record
Route sample Microgabbro North Britain Palaeogene Dyke Suite Around 354 m Seen on Ben Nevis

Dolerite is a hard, dark, fine-grained rock. It grips well when dry and is fair when wet. It is usually solid, but it often breaks into blocky columns, so check blocks before you pull on them.

BGS record

Generic exposed scrambling terrain; BGS summit-area bedrock samples are included where available, but route grade, exact rock, polish, drainage and escape options remain unresolved. Contains British Geological Survey materials © UKRI 2026. How to use the climbing and scrambling forecast.

Did this match your experience?Tell us about the rock surface and wind to help improve this beta forecast.Give feedback

A broad surface report is enough; you do not need to identify a particular route.

Overnight · Aurora, stars & meteorsAfter darkBetaForecasts disagree about rain or haze, so it could be murkier than this looks. View forecastClose forecast

After dark: aurora and stargazing

Night beginning 2026-11-18. All times are UK local time.

Using the last available sky forecast, updated at 10:56 GMT on 14 Nov. Cloud conditions may have changed. Live aurora guidance is temporarily unavailable.

Stargazing

Good sky conditions during the best available spell: 19 Nov, 01:00 GMT to 02:00 GMT.

Forecasts disagree about rain or haze, so it could be murkier than this looks.

Moon-free dark sky: 19 Nov, 01:00 GMT to 05:50 GMT.

Sky conditions through the night
Fully dark periods. Conditions can change between forecast hours.
TimeViewing conditions
18 Nov, 18:20 GMT to 19:00 GMTMixed sky conditions

Some breaks in the cloud, so stars at times. Moonlight washes out the fainter stars.

18 Nov, 19:00 GMT to 20:00 GMTMixed sky conditions

Some breaks in the cloud, so stars at times. Moonlight washes out the fainter stars.

18 Nov, 20:00 GMT to 21:00 GMTMixed sky conditions

Some breaks in the cloud, so stars at times. Moonlight washes out the fainter stars.

18 Nov, 21:00 GMT to 22:00 GMTMixed sky conditions

Mostly clear. Moonlight washes out the fainter stars.

18 Nov, 22:00 GMT to 23:00 GMTMixed sky conditions

Mostly clear. Moonlight washes out the fainter stars.

18 Nov, 23:00 GMT to 19 Nov, 00:00 GMTGood sky conditions

Mostly clear.

19 Nov, 00:00 GMT to 01:00 GMTGood sky conditions

Mostly clear.

19 Nov, 01:00 GMT to 02:00 GMTGood sky conditions

Forecasts disagree about rain or haze, so it could be murkier than this looks.

Forecast models disagree.

19 Nov, 02:00 GMT to 03:00 GMTMixed sky conditions

Some forecasts show clear spells, others keep it cloudy; check again nearer the time.

Forecast models disagree.

19 Nov, 03:00 GMT to 04:00 GMTMixed sky conditions

Some forecasts show clear spells, others keep it cloudy; check again nearer the time.

Forecast models disagree.

19 Nov, 04:00 GMT to 05:00 GMTMixed sky conditions

Some forecasts show clear spells, others keep it cloudy; check again nearer the time.

Forecast models disagree.

19 Nov, 05:00 GMT to 05:50 GMTMixed sky conditions

Some forecasts show clear spells, others keep it cloudy; check again nearer the time.

Forecast models disagree.

Moon, darkness and meteor showers

Gibbous moon, about 66% illuminated.

Moonset around 19 Nov, 01:00 GMT.

Full darkness: 18 Nov, 18:20 GMT to 19 Nov, 05:50 GMT.

Moon times assume an open horizon. Hills can hide the Moon sooner. Moon-free does not mean cloud-free.

Southern Taurids are active on this night. Activity may be much lower away from the peak.

Northern Taurids are active on this night. Activity may be much lower away from the peak.

Leonids are active on this night. Activity may be much lower away from the peak.

  • Southern Taurids: peak around 10 October 2026.
  • Northern Taurids: peak around 12 November 2026.
  • Leonids: peak around 18 November 2026.
  • Geminids: peak around 14 December 2026.
  • Ursids: peak around 22 December 2026.

Dates from the Royal Observatory Greenwich. Activity dates do not guarantee visible meteors. Look across a broad, dark sky, not only north.

Darkness of the surroundings

Estimated darkness rank 483 of 980 assessed peaks (1 is darkest), based on surrounding artificial light in 2021. This is not a measurement of tonight’s sky.

2021 artificial-light baseline, not measured sky brightness or a Bortle class. Changes to lighting, blue-rich LEDs, terrain screening, atmospheric scattering and cloud-reflected light are not resolved. Similar ranks are not meaningfully distinct. Darkness is not a recommendation to climb a summit at night.

VIIRS nighttime lights: Earth Observation Group, Payne Institute for Public Policy, Colorado School of Mines. Reprocessed by OpenGeoHub/OpenLandMap. Cropped and ranked by Mountain Weather.

Terrain at this viewpoint

Approximate terrain horizon at Ben Nevis. Trees, buildings and nearby obstacles are not included.

Approximate bare-earth horizon, not surveyed sightlines. Narrow ridges may fall between samples. Trees, buildings and very close obstacles are not resolved. Valid only at the named summit coordinate, not on its slopes or at a lower campsite.

Mapzen Terrain Tiles. Europe terrain produced using Copernicus data and information funded by the European Union, EU-DEM layers. UK terrain: Environment Agency copyright and/or database right 2015. Global terrain: USGS and NOAA.

Contains Welsh Government public sector information licensed under the Open Government Licence v3.0.

Sky-weather grades exclude light pollution, terrain and thin haze. They are not mountain safety ratings. Check the mountain and camping forecast separately. Accessible lower viewpoints may be a better choice than summits.

Explore the dedicated aurora forecast, meteor shower forecast or dark-sky and astrophotography forecast.

Recommended kit for this dayWeather-aware packing prompts, plus your core hillwalking kitView kit

For a day hillwalk, not a complete route-specific checklist. Carry navigation and backup you can use, warm and waterproof layers, suitable footwear, food and water, a headtorch, emergency shelter, first aid and a way to call for help. Snow, ice, technical terrain and overnight trips need additional equipment and skills.

Does the weather shape your plans?Optional hill-user research. One answer helps; further questions are up to you.Take part

Help the Mountain Decisions Project understand how forecasts influence hill days, including when plans stay the same. Findings will be shared publicly as summaries, not individual responses.

This is about Ben Nevis on Wednesday 18 November 2026. It asks about intentions, not whether you actually went out. No name or account is needed.

Open the questions to take part.

About the research and your privacy · Already been out? Share that experience instead

Confidence: Medium
Overall hill weather92Excellent
Summit wind · 08:00-17:000-15 mph easterly Summit gusts · 08:00-17:005-15 mph Feels like-12 to -8°C PrecipitationLittle or none Cloud-free summit estimate60% Freezing level500-800 m DaylightSunrise 08:07 · Sunset 16:01 · 7.9 hours daylight

The day on the hill

A fine day on Ben Nevis: dry, with light winds.

Wind

On the summit expect light winds of up to 10 mph, mainly easterly, with gusts of 5–15 mph at the windiest. Lower down on the open hillside the wind will be light, under 5 mph.

Cloud and visibility

The tops should stay mostly clear of cloud. Mist or fog is possible in the valleys early on, clearing by about 2am. Good spells of sunshine are likely.

Rain and ground

It should stay dry.

Warmth and kit

On the tops it will be around -6 to -2°C, feeling like -12 to -8°C in the wind. The freezing level is around 600–900 m, so it will be below freezing on the tops. Take a hat, gloves, a windproof and a spare warm layer.

Daylight

A short day, with only about 8 hours of daylight. Sunset is around 4pm, so allow time to get off the hill before dark, and carry a head torch.

Forecast confidence

Cloud heights are particularly hard to pin down today. It's still five days off and could change, so check again nearer the time.

Sunshine context Model-grid estimate, not summit sunshine

The surrounding model grid indicates 6.9 h of sunshine. This is not a forecast of time in sunshine on the summit. Use the cloud and views outlook above for the conditions on this mountain.

Early
1 h
Midday
4 h
Later
0 h

Overnight forecast: 17:00–08:00 (UK local time), in Wild camping below.

Morning · 08:00–12:00 Excellent Summit winds around 0-10 mph. Gusts around 5-15 mph are possible on exposed ground.
93
Afternoon · 12:00–17:00 Excellent Summit winds around 5-15 mph. Gusts around 5-15 mph are possible on exposed ground.
92

Compare an early start with later conditions. The main forecast above covers the day in more detail.

Overnight · 17:00–08:00Wild campingBetaA mixed night to camp, mainly because of the cold: a frost, down to -2°C. 59Mixed · 600 m View detailsHide details
Night beginning Thursday 19 November 2026

Full overnight outlook

A mixed night to camp, mainly because of the cold. Light winds on open ground, gusting no more than about 9 mph. It should stay dry. A frost up around 900 m, down to about -2°C. A warm 3-season or 3–4 season bag rated to about -2°C comfort, and a warm mat, should do. Allow more if you sleep cold.

Overnight rain0.0 mm Open ground · 600 m5 mph · gusts 8 mph Morning pack-upNo wet signal Sleeping-bag warmthISO comfort rating about -2°C or lower

Moon overnight

Waxing gibbous moon

Illuminated disc
75%
Moonrise
Outside this window
Moonset
02:21 next morning GMT

Extensive cloud may limit moonlight. Illumination describes the sunlit part of the Moon, not brightness at your pitch.

Overnight window: 19 Nov, 17:00 GMT to 20 Nov, 08:00 GMT. Approximate open-horizon times; hills can hide the Moon. Still take a headtorch.

Elevation reference (open ground)

300 m59 · mixed
Wind / gust
4 mph / 6 mph
Typical / low
1.3°C / 1.2°C · much of the night
In cloud
0% of modelled night
Condensation
Low
600 m59 · mixed
Wind / gust
5 mph / 8 mph
Typical / low
0.7°C / 0.5°C · much of the night
In cloud
0% of modelled night
Condensation
Low
900 m39 · poor
Wind / gust
6 mph / 9 mph
Typical / low
-1.4°C / -1.5°C · much of the night
In cloud
0% of modelled night
Condensation
Low

Warmth planning: As a broad starting point, consider a warm 3-season or 3–4 season bag with an ISO/EN comfort rating at or below about -2°C. Allow more margin if you sleep cold or expect fatigue, and use an adequate insulated mat. Dampness is possible, so keep the sleep system dry and ensure its insulation remains effective if damp.

Open-hillside reference. A sheltered pitch may be calmer; cols and ridges may be much windier. Tent design and the exact pitch still matter. Read about sleeping-bag comfort ratings, pitching in strong winds or using the wild-camping forecast.

Did this match your night?Share a quick observation to help improve this beta forecast.Give feedback

Approximate height is enough, please do not share an exact wild-camp location.

Daytime · exposed rockClimbing & scramblingBetaGood conditions for exposed scrambling. Good79 View detailsHide details
Generic exposed-rock guidance

Full climbing & scrambling outlook

Good conditions for exposed scrambling. The rock should be mostly dry, though drainage lines and shaded holds may still be damp. The rock around the summit is mostly andesite, a hard volcanic rock. It grips well when dry and is fair when wet, though polished holds on popular routes get slippery. It is generally solid, but shattered in gullies and on broken ground. On the usual routes up you may also cross granite, which has excellent friction when dry and clean and is fair when wet, but greasy where there is lichen or moss. These are general notes for each rock type, taken from geological maps around the summit, so the rock on your line may differ.

Rock surfaceProbably dryPeak gust5-15 mphRain0.0 mm
Representative rock around the summit and along available routes Hornblende-andesite lava Ben Nevis Volcanic Formation
Origin
Igneous
Broad rock-response group
Volcanic rock
Mapping
BGS Geology 50K · 1:50,000
Summit area
Volcanic rock in 100% of 17 BGS samples within 350 m
Rock-response profile
Low confidence
View the summit BGS record

Andesite is a hard volcanic rock. It grips well when dry and is fair when wet, though polished holds on popular routes get slippery. It is generally solid, but shattered in gullies and on broken ground. These are general notes for each rock type, from geological map samples at and around the summit. The rock on your line can differ, and lichen, vegetation and seepage all change how it feels underfoot.

Rock groups along the sampled routes

These are mapped rock groups, not separate weather forecasts or a ranking of route safety.

Ben Nevis

volcanic rock, granite, gneiss or gabbro

Càrn Mòr Dearg and Ben Nevis

volcanic rock, granite, gneiss or gabbro

Geological detail and BGS records
Mapped variation

5 rock types appear in the mapped samples

Samples around the summit inform the main rock-response profile, with the summit pin shown separately where it differs. Route samples add further context, but this is not a continuous geological survey.

Summit-area sample Hornblende-andesite lava Ben Nevis Volcanic Formation 856–1,343 m samples Seen on Ben Nevis, Càrn Mòr Dearg and Ben Nevis

Andesite is a hard volcanic rock. It grips well when dry and is fair when wet, though polished holds on popular routes get slippery. It is generally solid, but shattered in gullies and on broken ground.

BGS record
Route sample Leucomicrogranodiorite Ben Nevis Complex (Inner Granite) 511–1,020 m samples Seen on Ben Nevis, Càrn Mòr Dearg and Ben Nevis

Granite is a coarse, crystalline rock. It has excellent friction when dry and clean and is fair when wet, but greasy where there is lichen or moss. It is generally solid, but weathers into rounded slabs and blocks, and loose granite grit on slabs can roll underfoot like ball bearings.

BGS record
Route sample Porphyritic granodiorite Ben Nevis Complex (Outer Granite) 393–535 m samples Seen on Càrn Mòr Dearg and Ben Nevis

Granite is a coarse, crystalline rock. It has excellent friction when dry and clean and is fair when wet, but greasy where there is lichen or moss. It is generally solid, but weathers into rounded slabs and blocks, and loose granite grit on slabs can roll underfoot like ball bearings.

BGS record
Route sample Lamprophyre Ben Nevis Dyke Swarm Around 174 m Seen on Ben Nevis

Lamprophyre is a dark rock that usually forms thin dykes. It grips reasonably when dry and is poor when wet. It weathers easily and is often crumbly and loose, so treat it with suspicion.

BGS record
Route sample Microgabbro North Britain Palaeogene Dyke Suite Around 354 m Seen on Ben Nevis

Dolerite is a hard, dark, fine-grained rock. It grips well when dry and is fair when wet. It is usually solid, but it often breaks into blocky columns, so check blocks before you pull on them.

BGS record

Generic exposed scrambling terrain; BGS summit-area bedrock samples are included where available, but route grade, exact rock, polish, drainage and escape options remain unresolved. Contains British Geological Survey materials © UKRI 2026. How to use the climbing and scrambling forecast.

Did this match your experience?Tell us about the rock surface and wind to help improve this beta forecast.Give feedback

A broad surface report is enough; you do not need to identify a particular route.

Overnight · Aurora, stars & meteorsAfter darkBetaSome forecasts show clear spells, others keep it cloudy; check again nearer the time. View forecastClose forecast

After dark: aurora and stargazing

Night beginning 2026-11-19. All times are UK local time.

Using the last available sky forecast, updated at 10:56 GMT on 14 Nov. Cloud conditions may have changed. Live aurora guidance is temporarily unavailable.

Stargazing

Mixed sky conditions during the best available spell: 20 Nov, 05:00 GMT to 05:55 GMT.

Some forecasts show clear spells, others keep it cloudy; check again nearer the time.

Moon-free dark sky: 20 Nov, 02:25 GMT to 05:55 GMT.

Sky conditions through the night
Fully dark periods. Conditions can change between forecast hours.
TimeViewing conditions
19 Nov, 18:20 GMT to 19:00 GMTMixed sky conditions

Some forecasts show clear spells, others keep it cloudy; check again nearer the time.

Forecast models disagree.

19 Nov, 19:00 GMT to 20:00 GMTMixed sky conditions

Some forecasts show clear spells, others keep it cloudy; check again nearer the time.

Forecast models disagree.

19 Nov, 20:00 GMT to 21:00 GMTPoor sky conditions

Some forecasts show clear spells, others keep it cloudy; check again nearer the time.

Forecast models disagree.

19 Nov, 21:00 GMT to 22:00 GMTPoor sky conditions

Some forecasts show clear spells, others keep it cloudy; check again nearer the time.

Forecast models disagree.

19 Nov, 22:00 GMT to 23:00 GMTPoor sky conditions

Some forecasts show clear spells, others keep it cloudy; check again nearer the time.

Forecast models disagree.

19 Nov, 23:00 GMT to 20 Nov, 00:00 GMTPoor sky conditions

Some forecasts show clear spells, others keep it cloudy; check again nearer the time.

Forecast models disagree.

20 Nov, 00:00 GMT to 01:00 GMTPoor sky conditions

Mostly cloudy, so little chance of seeing the stars. Moonlight washes out the fainter stars.

20 Nov, 01:00 GMT to 02:00 GMTPoor sky conditions

Mostly cloudy, so little chance of seeing the stars.

20 Nov, 02:00 GMT to 03:00 GMTPoor sky conditions

Some breaks in the cloud, so stars at times. Hazy, which dims the fainter stars.

20 Nov, 03:00 GMT to 04:00 GMTPoor sky conditions

Forecasts disagree about rain or haze, so it could be murkier than this looks.

Forecast models disagree.

20 Nov, 04:00 GMT to 05:00 GMTPoor sky conditions

Some forecasts show clear spells, others keep it cloudy; check again nearer the time.

Forecast models disagree.

20 Nov, 05:00 GMT to 05:55 GMTMixed sky conditions

Some forecasts show clear spells, others keep it cloudy; check again nearer the time.

Forecast models disagree.

Moon, darkness and meteor showers

Gibbous moon, about 75% illuminated.

Moonset around 20 Nov, 02:25 GMT.

Full darkness: 19 Nov, 18:20 GMT to 20 Nov, 05:55 GMT.

Moon times assume an open horizon. Hills can hide the Moon sooner. Moon-free does not mean cloud-free.

Southern Taurids are active on this night. Activity may be much lower away from the peak.

Northern Taurids are active on this night. Activity may be much lower away from the peak.

Leonids are active on this night. Activity may be much lower away from the peak.

  • Southern Taurids: peak around 10 October 2026.
  • Northern Taurids: peak around 12 November 2026.
  • Leonids: peak around 18 November 2026.
  • Geminids: peak around 14 December 2026.
  • Ursids: peak around 22 December 2026.

Dates from the Royal Observatory Greenwich. Activity dates do not guarantee visible meteors. Look across a broad, dark sky, not only north.

Darkness of the surroundings

Estimated darkness rank 483 of 980 assessed peaks (1 is darkest), based on surrounding artificial light in 2021. This is not a measurement of tonight’s sky.

2021 artificial-light baseline, not measured sky brightness or a Bortle class. Changes to lighting, blue-rich LEDs, terrain screening, atmospheric scattering and cloud-reflected light are not resolved. Similar ranks are not meaningfully distinct. Darkness is not a recommendation to climb a summit at night.

VIIRS nighttime lights: Earth Observation Group, Payne Institute for Public Policy, Colorado School of Mines. Reprocessed by OpenGeoHub/OpenLandMap. Cropped and ranked by Mountain Weather.

Terrain at this viewpoint

Approximate terrain horizon at Ben Nevis. Trees, buildings and nearby obstacles are not included.

Approximate bare-earth horizon, not surveyed sightlines. Narrow ridges may fall between samples. Trees, buildings and very close obstacles are not resolved. Valid only at the named summit coordinate, not on its slopes or at a lower campsite.

Mapzen Terrain Tiles. Europe terrain produced using Copernicus data and information funded by the European Union, EU-DEM layers. UK terrain: Environment Agency copyright and/or database right 2015. Global terrain: USGS and NOAA.

Contains Welsh Government public sector information licensed under the Open Government Licence v3.0.

Sky-weather grades exclude light pollution, terrain and thin haze. They are not mountain safety ratings. Check the mountain and camping forecast separately. Accessible lower viewpoints may be a better choice than summits.

Explore the dedicated aurora forecast, meteor shower forecast or dark-sky and astrophotography forecast.

Recommended kit for this dayWeather-aware packing prompts, plus your core hillwalking kitView kit

For a day hillwalk, not a complete route-specific checklist. Carry navigation and backup you can use, warm and waterproof layers, suitable footwear, food and water, a headtorch, emergency shelter, first aid and a way to call for help. Snow, ice, technical terrain and overnight trips need additional equipment and skills.

Does the weather shape your plans?Optional hill-user research. One answer helps; further questions are up to you.Take part

Help the Mountain Decisions Project understand how forecasts influence hill days, including when plans stay the same. Findings will be shared publicly as summaries, not individual responses.

This is about Ben Nevis on Thursday 19 November 2026. It asks about intentions, not whether you actually went out. No name or account is needed.

Open the questions to take part.

About the research and your privacy · Already been out? Share that experience instead

Confidence: Unavailable
Overall hill weather76Good
Summit wind · 08:00-17:005-15 mph southwesterly Summit gusts · 08:00-17:0010-20 mph Feels like-14 to -10°C PrecipitationLittle or none Cloud-free summit estimate65% Cloud base through day1,500-1,800 m Freezing level600-900 m DaylightSunrise 08:10 · Sunset 16:00 · 7.8 hours daylight

The day on the hill

A good day on Ben Nevis, though expect a bitter wind chill.

Wind

On the summit expect light winds of up to 15 mph, mainly south-westerly, with gusts of 10–20 mph at the windiest.

Cloud and visibility

The tops should stay mostly clear of cloud. Patchy mist is possible in sheltered valleys early on. Good spells of sunshine are likely.

Rain and ground

It should stay dry.

Warmth and kit

On the tops it will be around -8 to -4°C, feeling like -14 to -10°C in the wind. The freezing level is around 700–1000 m, so it will be below freezing on the tops. Hat, gloves and a warm insulated layer are essential, with extra warmth for stops.

Daylight

A short day, with only about 8 hours of daylight. Sunset is around 4pm, so allow time to get off the hill before dark, and carry a head torch.

Forecast confidence

It's still six days off and could change, so check again nearer the time.

Sunshine context Model-grid estimate, not summit sunshine

The surrounding model grid indicates 5.4 h of sunshine. This is not a forecast of time in sunshine on the summit. Use the cloud and views outlook above for the conditions on this mountain.

Early
Less than 1 hour
Midday
3.9 h

Overnight forecast: 17:00–08:00 (UK local time), in Wild camping below.

Morning · 08:00–12:00 Excellent Summit winds around 5-15 mph. Gusts around 10-20 mph are possible on exposed ground.
91
Afternoon · 12:00–17:00 Mixed Summit winds around 5-15 mph. Gusts around 10-20 mph are possible on exposed ground.
60

Compare an early start with later conditions. The main forecast above covers the day in more detail.

Overnight · 17:00–08:00Wild campingBetaA mixed night to camp, mainly because of the cold: a frost, down to -2°C. 59Mixed · 600 m View detailsHide details
Night beginning Friday 20 November 2026

Full overnight outlook

A mixed night to camp, mainly because of the cold. Gusts reach about 25 mph on open ground, so peg out well and use the guylines. Look for shelter from the south. It should stay dry. A frost up around 900 m, down to about -2°C. A warm 3-season or 3–4 season bag rated to about -2°C comfort, and a warm mat, should do. Allow more if you sleep cold.

Overnight rain0.0 mm Open ground · 600 m11 mph · gusts 23 mph Morning pack-upNo wet signal Sleeping-bag warmthISO comfort rating about -2°C or lower

Moon overnight

Waxing gibbous moon

Illuminated disc
83%
Moonrise
Outside this window
Moonset
03:49 next morning GMT

Extensive cloud may limit moonlight. Illumination describes the sunlit part of the Moon, not brightness at your pitch.

Overnight window: 20 Nov, 17:00 GMT to 21 Nov, 08:00 GMT. Approximate open-horizon times; hills can hide the Moon. Still take a headtorch.

Elevation reference (open ground)

300 m59 · mixed
Wind / gust
9 mph / 20 mph
Typical / low
0.4°C / 0.1°C · much of the night
In cloud
0% of modelled night
Condensation
Low
600 m59 · mixed
Wind / gust
11 mph / 23 mph
Typical / low
0.4°C / 0.1°C · much of the night
In cloud
0% of modelled night
Condensation
Low
900 m39 · poor
Wind / gust
12 mph / 27 mph
Typical / low
-1.8°C / -2.0°C · much of the night
In cloud
0% of modelled night
Condensation
Low

Warmth planning: As a broad starting point, consider a warm 3-season or 3–4 season bag with an ISO/EN comfort rating at or below about -2°C. Allow more margin if you sleep cold or expect fatigue, and use an adequate insulated mat. Dampness is possible, so keep the sleep system dry and ensure its insulation remains effective if damp.

Open-hillside reference. A sheltered pitch may be calmer; cols and ridges may be much windier. Tent design and the exact pitch still matter. Read about sleeping-bag comfort ratings, pitching in strong winds or using the wild-camping forecast.

Did this match your night?Share a quick observation to help improve this beta forecast.Give feedback

Approximate height is enough, please do not share an exact wild-camp location.

Daytime · exposed rockClimbing & scramblingBetaFair conditions for exposed scrambling. Good71 View detailsHide details
Generic exposed-rock guidance

Full climbing & scrambling outlook

Fair conditions for exposed scrambling. The rock should be mostly dry, though drainage lines and shaded holds may still be damp. The rock around the summit is mostly andesite, a hard volcanic rock. It grips well when dry and is fair when wet, though polished holds on popular routes get slippery. It is generally solid, but shattered in gullies and on broken ground. On the usual routes up you may also cross granite, which has excellent friction when dry and clean and is fair when wet, but greasy where there is lichen or moss. These are general notes for each rock type, taken from geological maps around the summit, so the rock on your line may differ.

Rock surfaceProbably dryPeak gust10-20 mphRain0.0 mm
Representative rock around the summit and along available routes Hornblende-andesite lava Ben Nevis Volcanic Formation
Origin
Igneous
Broad rock-response group
Volcanic rock
Mapping
BGS Geology 50K · 1:50,000
Summit area
Volcanic rock in 100% of 17 BGS samples within 350 m
Rock-response profile
Low confidence
View the summit BGS record

Andesite is a hard volcanic rock. It grips well when dry and is fair when wet, though polished holds on popular routes get slippery. It is generally solid, but shattered in gullies and on broken ground. These are general notes for each rock type, from geological map samples at and around the summit. The rock on your line can differ, and lichen, vegetation and seepage all change how it feels underfoot.

Rock groups along the sampled routes

These are mapped rock groups, not separate weather forecasts or a ranking of route safety.

Ben Nevis

volcanic rock, granite, gneiss or gabbro

Càrn Mòr Dearg and Ben Nevis

volcanic rock, granite, gneiss or gabbro

Geological detail and BGS records
Mapped variation

5 rock types appear in the mapped samples

Samples around the summit inform the main rock-response profile, with the summit pin shown separately where it differs. Route samples add further context, but this is not a continuous geological survey.

Summit-area sample Hornblende-andesite lava Ben Nevis Volcanic Formation 856–1,343 m samples Seen on Ben Nevis, Càrn Mòr Dearg and Ben Nevis

Andesite is a hard volcanic rock. It grips well when dry and is fair when wet, though polished holds on popular routes get slippery. It is generally solid, but shattered in gullies and on broken ground.

BGS record
Route sample Leucomicrogranodiorite Ben Nevis Complex (Inner Granite) 511–1,020 m samples Seen on Ben Nevis, Càrn Mòr Dearg and Ben Nevis

Granite is a coarse, crystalline rock. It has excellent friction when dry and clean and is fair when wet, but greasy where there is lichen or moss. It is generally solid, but weathers into rounded slabs and blocks, and loose granite grit on slabs can roll underfoot like ball bearings.

BGS record
Route sample Porphyritic granodiorite Ben Nevis Complex (Outer Granite) 393–535 m samples Seen on Càrn Mòr Dearg and Ben Nevis

Granite is a coarse, crystalline rock. It has excellent friction when dry and clean and is fair when wet, but greasy where there is lichen or moss. It is generally solid, but weathers into rounded slabs and blocks, and loose granite grit on slabs can roll underfoot like ball bearings.

BGS record
Route sample Lamprophyre Ben Nevis Dyke Swarm Around 174 m Seen on Ben Nevis

Lamprophyre is a dark rock that usually forms thin dykes. It grips reasonably when dry and is poor when wet. It weathers easily and is often crumbly and loose, so treat it with suspicion.

BGS record
Route sample Microgabbro North Britain Palaeogene Dyke Suite Around 354 m Seen on Ben Nevis

Dolerite is a hard, dark, fine-grained rock. It grips well when dry and is fair when wet. It is usually solid, but it often breaks into blocky columns, so check blocks before you pull on them.

BGS record

Generic exposed scrambling terrain; BGS summit-area bedrock samples are included where available, but route grade, exact rock, polish, drainage and escape options remain unresolved. Contains British Geological Survey materials © UKRI 2026. How to use the climbing and scrambling forecast.

Did this match your experience?Tell us about the rock surface and wind to help improve this beta forecast.Give feedback

A broad surface report is enough; you do not need to identify a particular route.

Overnight · Aurora, stars & meteorsAfter darkBetaMostly cloudy, so little chance of seeing the stars. Hazy, which dims the fainter stars. View forecastClose forecast

After dark: aurora and stargazing

Night beginning 2026-11-20. All times are UK local time.

Using the last available sky forecast, updated at 10:56 GMT on 14 Nov. Cloud conditions may have changed. Live aurora guidance is temporarily unavailable.

Stargazing

Poor sky conditions during the best available spell: 21 Nov, 03:00 GMT to 04:00 GMT.

Mostly cloudy, so little chance of seeing the stars. Hazy, which dims the fainter stars.

Moon-free dark sky: 21 Nov, 03:50 GMT to 05:55 GMT.

Sky conditions through the night
Fully dark periods. Conditions can change between forecast hours.
TimeViewing conditions
20 Nov, 18:15 GMT to 19:00 GMTPoor sky conditions

Mostly cloudy, so little chance of seeing the stars. Hazy, which dims the fainter stars. Moonlight washes out the fainter stars.

Limited model coverage.

20 Nov, 19:00 GMT to 20:00 GMTPoor sky conditions

Mostly cloudy, so little chance of seeing the stars. Hazy, which dims the fainter stars. Moonlight washes out the fainter stars.

Limited model coverage.

20 Nov, 20:00 GMT to 21:00 GMTPoor sky conditions

Mostly cloudy, so little chance of seeing the stars. Hazy, which dims the fainter stars. Moonlight washes out the fainter stars.

Limited model coverage.

20 Nov, 21:00 GMT to 22:00 GMTPoor sky conditions

Mostly cloudy, so little chance of seeing the stars. Hazy, which dims the fainter stars. Moonlight washes out the fainter stars.

Limited model coverage.

20 Nov, 22:00 GMT to 23:00 GMTPoor sky conditions

Mostly cloudy, so little chance of seeing the stars. Hazy, which dims the fainter stars. Moonlight washes out the fainter stars.

Limited model coverage.

20 Nov, 23:00 GMT to 21 Nov, 00:00 GMTPoor sky conditions

Mostly cloudy, so little chance of seeing the stars. Hazy, which dims the fainter stars. Moonlight washes out the fainter stars.

Limited model coverage.

21 Nov, 00:00 GMT to 01:00 GMTPoor sky conditions

Mostly cloudy, so little chance of seeing the stars. Hazy, which dims the fainter stars. Moonlight washes out the fainter stars.

Limited model coverage.

21 Nov, 01:00 GMT to 02:00 GMTPoor sky conditions

Mostly cloudy, so little chance of seeing the stars. Hazy, which dims the fainter stars. Moonlight washes out the fainter stars.

Limited model coverage.

21 Nov, 02:00 GMT to 03:00 GMTPoor sky conditions

Mostly cloudy, so little chance of seeing the stars. Hazy, which dims the fainter stars. Moonlight washes out the fainter stars.

Limited model coverage.

21 Nov, 03:00 GMT to 04:00 GMTPoor sky conditions

Mostly cloudy, so little chance of seeing the stars. Hazy, which dims the fainter stars.

Limited model coverage.

21 Nov, 04:00 GMT to 05:00 GMTPoor sky conditions

Mostly cloudy, so little chance of seeing the stars. Hazy, which dims the fainter stars.

Limited model coverage.

21 Nov, 05:00 GMT to 05:55 GMTPoor sky conditions

Mostly cloudy, so little chance of seeing the stars. Hazy, which dims the fainter stars.

Limited model coverage.

Moon, darkness and meteor showers

Gibbous moon, about 84% illuminated.

Moonset around 21 Nov, 03:50 GMT.

Full darkness: 20 Nov, 18:15 GMT to 21 Nov, 05:55 GMT.

Moon times assume an open horizon. Hills can hide the Moon sooner. Moon-free does not mean cloud-free.

Southern Taurids are active on this night. Activity may be much lower away from the peak.

Northern Taurids are active on this night. Activity may be much lower away from the peak.

Leonids are active on this night. Activity may be much lower away from the peak.

  • Southern Taurids: peak around 10 October 2026.
  • Northern Taurids: peak around 12 November 2026.
  • Leonids: peak around 18 November 2026.
  • Geminids: peak around 14 December 2026.
  • Ursids: peak around 22 December 2026.

Dates from the Royal Observatory Greenwich. Activity dates do not guarantee visible meteors. Look across a broad, dark sky, not only north.

Darkness of the surroundings

Estimated darkness rank 483 of 980 assessed peaks (1 is darkest), based on surrounding artificial light in 2021. This is not a measurement of tonight’s sky.

2021 artificial-light baseline, not measured sky brightness or a Bortle class. Changes to lighting, blue-rich LEDs, terrain screening, atmospheric scattering and cloud-reflected light are not resolved. Similar ranks are not meaningfully distinct. Darkness is not a recommendation to climb a summit at night.

VIIRS nighttime lights: Earth Observation Group, Payne Institute for Public Policy, Colorado School of Mines. Reprocessed by OpenGeoHub/OpenLandMap. Cropped and ranked by Mountain Weather.

Terrain at this viewpoint

Approximate terrain horizon at Ben Nevis. Trees, buildings and nearby obstacles are not included.

Approximate bare-earth horizon, not surveyed sightlines. Narrow ridges may fall between samples. Trees, buildings and very close obstacles are not resolved. Valid only at the named summit coordinate, not on its slopes or at a lower campsite.

Mapzen Terrain Tiles. Europe terrain produced using Copernicus data and information funded by the European Union, EU-DEM layers. UK terrain: Environment Agency copyright and/or database right 2015. Global terrain: USGS and NOAA.

Contains Welsh Government public sector information licensed under the Open Government Licence v3.0.

Sky-weather grades exclude light pollution, terrain and thin haze. They are not mountain safety ratings. Check the mountain and camping forecast separately. Accessible lower viewpoints may be a better choice than summits.

Explore the dedicated aurora forecast, meteor shower forecast or dark-sky and astrophotography forecast.

Recommended kit for this dayWeather-aware packing prompts, plus your core hillwalking kitView kit

For a day hillwalk, not a complete route-specific checklist. Carry navigation and backup you can use, warm and waterproof layers, suitable footwear, food and water, a headtorch, emergency shelter, first aid and a way to call for help. Snow, ice, technical terrain and overnight trips need additional equipment and skills.

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Help the Mountain Decisions Project understand how forecasts influence hill days, including when plans stay the same. Findings will be shared publicly as summaries, not individual responses.

This is about Ben Nevis on Friday 20 November 2026. It asks about intentions, not whether you actually went out. No name or account is needed.

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Confidence: Unavailable
Overall hill weather46Poor
Summit wind · 08:00-17:0020-35 mph southerly Summit gusts · 08:00-17:0035-45 mph Feels like-12 to -8°C PrecipitationLittle or none Cloud-free summit estimate20% Cloud base through day700-1,900 m Freezing level800-1,100 m DaylightSunrise 08:12 · Sunset 15:58 · 7.8 hours daylight

The day on the hill

A poor day on the tops of Ben Nevis, with cloud coming down onto the tops and a blustery wind.

Wind

On the summit expect a southerly wind of 20–35 mph for most of the day, with gusts of 35–45 mph at the windiest. Lower down on the open hillside it will be more like 5–15 mph. Gusts like that are strong enough to make walking into it hard work, with buffeting on ridges and edges. If the windier forecast models are right, summit gusts could reach 50–60 mph.

Cloud and visibility

The tops start clear, but the cloud comes down onto them around midday. The cloud base could be as low as 700–1000 m mid-afternoon. In cloud you'll be finding your way without landmarks, so carry navigation you trust and know how to use, with a backup such as a spare battery or a map and compass. Mist or fog is possible in the valleys early on, clearing by about 1am.

Rain and ground

It should stay dry. Some forecast models bring rain, so don't count on it staying dry.

Warmth and kit

On the tops it will be around -4 to 0°C, feeling like -12 to -8°C in the wind. The freezing level is around 800–1100 m, so it will be below freezing on the tops. Take a hat, gloves, a windproof and a spare warm layer.

Daylight

A short day, with only about 8 hours of daylight. Sunset is around 4pm, so allow time to get off the hill before dark, and carry a head torch.

Forecast confidence

It's still seven days off and could change, so check again nearer the time.

Sunshine context Model-grid estimate, not summit sunshine

The surrounding model grid indicates 0 h of sunshine. This is not a forecast of time in sunshine on the summit. Use the cloud and views outlook above for the conditions on this mountain.

Early
0 h
Midday
0 h

Overnight forecast: 17:00–08:00 (UK local time), in Wild camping below.

Morning · 08:00–12:00 Mixed Summit winds around 20-30 mph. Gusts around 30-40 mph are possible on exposed ground.
63
Afternoon · 12:00–17:00 Poor Summit winds around 25-35 mph. Gusts around 35-45 mph are possible on exposed ground. Gusts this strong can make walking into it hard work, with buffeting on ridges and edges.
28

Compare an early start with later conditions. The main forecast above covers the day in more detail.

Overnight · 17:00–08:00Wild campingBetaA mixed night to camp, mainly because of the wind: gusts of about 35 mph and about 7 mm of rain. 40Poor · 600 m View detailsHide details
Night beginning Saturday 21 November 2026

Full overnight outlook

A mixed night to camp, mainly because of the wind. Gusts reach about 35 mph around 900 m and nearer 25 mph around 300 m, which makes for a noisy, testing night even in a good tent. Look for shelter from the south. The wind swings from southerly to westerly overnight, so a pitch sheltered at dusk may not be by morning. Expect about 7 mm of rain, with rain while you pitch and still falling when you pack up. Up around 900 m you'd likely be in cloud for part of the night: damp, and hard to find your way if you need to move. A cold night, down to about 0°C around 900 m. A warm 3-season or 3–4 season bag rated to about 0°C comfort, and a warm mat, should do. Allow more if you sleep cold.

Overnight rain6.6 mm Open ground · 600 m18 mph · gusts 32 mph Morning pack-upDampness possible Sleeping-bag warmthISO comfort rating about 0°C or lower

Moon overnight

Waxing gibbous moon

Illuminated disc
91%
Moonrise
Outside this window
Moonset
05:21 next morning GMT

Extensive cloud may limit moonlight. Illumination describes the sunlit part of the Moon, not brightness at your pitch.

Overnight window: 21 Nov, 17:00 GMT to 22 Nov, 08:00 GMT. Approximate open-horizon times; hills can hide the Moon. Still take a headtorch.

Elevation reference (open ground)

300 m43 · mixed
Wind / gust
16 mph / 27 mph
Typical / low
3.0°C / 2.2°C · much of the night
In cloud
0% of modelled night
Condensation
High
600 m40 · mixed
Wind / gust
18 mph / 32 mph
Typical / low
3.0°C / 2.2°C · much of the night
In cloud
0% of modelled night
Condensation
High
900 m29 · poor
Wind / gust
21 mph / 37 mph
Typical / low
0.9°C / 0.3°C · much of the night
In cloud
87% of modelled night
Condensation
High

Warmth planning: As a broad starting point, consider a warm 3-season or 3–4 season bag with an ISO/EN comfort rating at or below about 0°C. Allow more margin if you sleep cold or expect fatigue, and use an adequate insulated mat. Dampness is possible, so keep the sleep system dry and ensure its insulation remains effective if damp.

Open-hillside reference. A sheltered pitch may be calmer; cols and ridges may be much windier. Tent design and the exact pitch still matter. Read about sleeping-bag comfort ratings, pitching in strong winds or using the wild-camping forecast.

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Approximate height is enough, please do not share an exact wild-camp location.

Daytime · exposed rockClimbing & scramblingBetaVery poor conditions for exposed scrambling. Poor0 View detailsHide details
Generic exposed-rock guidance

Full climbing & scrambling outlook

Very poor conditions for exposed scrambling. The rock should be drying, but damp patches, shaded holds and drainage lines may still be wet. Icy patches are likely on the rock, which makes it treacherous without winter kit. Gusts of 35–45 mph could throw you off balance on exposed moves and ridges. Cloud on the tops may make route-finding and retreat harder. The rock around the summit is mostly andesite, a hard volcanic rock. It grips well when dry and is fair when wet, though polished holds on popular routes get slippery. It is generally solid, but shattered in gullies and on broken ground. On the usual routes up you may also cross granite, which has excellent friction when dry and clean and is fair when wet, but greasy where there is lichen or moss. These are general notes for each rock type, taken from geological maps around the summit, so the rock on your line may differ.

Rock surfaceDamp or dryingPeak gust35-45 mphRain0.3 mm
Main factorsgusts of 35–45 mphdamp or incompletely dried rock possiblemuch of the route may be in cloud
Representative rock around the summit and along available routes Hornblende-andesite lava Ben Nevis Volcanic Formation
Origin
Igneous
Broad rock-response group
Volcanic rock
Mapping
BGS Geology 50K · 1:50,000
Summit area
Volcanic rock in 100% of 17 BGS samples within 350 m
Rock-response profile
Low confidence
View the summit BGS record

Andesite is a hard volcanic rock. It grips well when dry and is fair when wet, though polished holds on popular routes get slippery. It is generally solid, but shattered in gullies and on broken ground. These are general notes for each rock type, from geological map samples at and around the summit. The rock on your line can differ, and lichen, vegetation and seepage all change how it feels underfoot.

Rock groups along the sampled routes

These are mapped rock groups, not separate weather forecasts or a ranking of route safety.

Ben Nevis

volcanic rock, granite, gneiss or gabbro

Càrn Mòr Dearg and Ben Nevis

volcanic rock, granite, gneiss or gabbro

Geological detail and BGS records
Mapped variation

5 rock types appear in the mapped samples

Samples around the summit inform the main rock-response profile, with the summit pin shown separately where it differs. Route samples add further context, but this is not a continuous geological survey.

Summit-area sample Hornblende-andesite lava Ben Nevis Volcanic Formation 856–1,343 m samples Seen on Ben Nevis, Càrn Mòr Dearg and Ben Nevis

Andesite is a hard volcanic rock. It grips well when dry and is fair when wet, though polished holds on popular routes get slippery. It is generally solid, but shattered in gullies and on broken ground.

BGS record
Route sample Leucomicrogranodiorite Ben Nevis Complex (Inner Granite) 511–1,020 m samples Seen on Ben Nevis, Càrn Mòr Dearg and Ben Nevis

Granite is a coarse, crystalline rock. It has excellent friction when dry and clean and is fair when wet, but greasy where there is lichen or moss. It is generally solid, but weathers into rounded slabs and blocks, and loose granite grit on slabs can roll underfoot like ball bearings.

BGS record
Route sample Porphyritic granodiorite Ben Nevis Complex (Outer Granite) 393–535 m samples Seen on Càrn Mòr Dearg and Ben Nevis

Granite is a coarse, crystalline rock. It has excellent friction when dry and clean and is fair when wet, but greasy where there is lichen or moss. It is generally solid, but weathers into rounded slabs and blocks, and loose granite grit on slabs can roll underfoot like ball bearings.

BGS record
Route sample Lamprophyre Ben Nevis Dyke Swarm Around 174 m Seen on Ben Nevis

Lamprophyre is a dark rock that usually forms thin dykes. It grips reasonably when dry and is poor when wet. It weathers easily and is often crumbly and loose, so treat it with suspicion.

BGS record
Route sample Microgabbro North Britain Palaeogene Dyke Suite Around 354 m Seen on Ben Nevis

Dolerite is a hard, dark, fine-grained rock. It grips well when dry and is fair when wet. It is usually solid, but it often breaks into blocky columns, so check blocks before you pull on them.

BGS record

Generic exposed scrambling terrain; BGS summit-area bedrock samples are included where available, but route grade, exact rock, polish, drainage and escape options remain unresolved. Contains British Geological Survey materials © UKRI 2026. How to use the climbing and scrambling forecast.

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A broad surface report is enough; you do not need to identify a particular route.

Overnight · Aurora, stars & meteorsAfter darkBetaNight-sky guidance is unavailable for this night. View forecastClose forecast

After dark: aurora and stargazing

Night-sky guidance is unavailable for this night. This does not mean clear skies or no aurora.

Explore the dedicated aurora forecast, meteor shower forecast or dark-sky and astrophotography forecast.

Recommended kit for this dayWeather-aware packing prompts, plus your core hillwalking kitView kit

For a day hillwalk, not a complete route-specific checklist. Carry navigation and backup you can use, warm and waterproof layers, suitable footwear, food and water, a headtorch, emergency shelter, first aid and a way to call for help. Snow, ice, technical terrain and overnight trips need additional equipment and skills.

Does the weather shape your plans?Optional hill-user research. One answer helps; further questions are up to you.Take part

Help the Mountain Decisions Project understand how forecasts influence hill days, including when plans stay the same. Findings will be shared publicly as summaries, not individual responses.

This is about Ben Nevis on Saturday 21 November 2026. It asks about intentions, not whether you actually went out. No name or account is needed.

Open the questions to take part.

About the research and your privacy · Already been out? Share that experience instead

Weather data: Open-Meteo (CC BY 4.0). Adapted by Mountain Weather.

Forecast run: 2026-11-14

From the developer of Mountain Weather

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A forecast is part of the decision.

Mountain weather can differ sharply from conditions in the valley. Check official warnings, carry appropriate navigation and clothing, and be ready to change the plan. Read how Mountain Weather forecasts are produced and where their limits lie.

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