Ben Macdui (Beinn Macduibh) Summit Weather Forecast

Wednesday 11 November 2026Confidence: Medium

Overall hill weather64Mixed

Summit wind · 08:00-17:0010-30 mph northwesterly Summit gusts · 08:00-17:0030-40 mph Feels like-14 to -10°C PrecipitationLittle or none Cloud-free summit estimate35% Cloud base through day400-1,700 m Freezing level600-900 m DaylightSunrise 07:46 · Sunset 16:09 · 8.4 hours daylight

The day on the hill

A mixed day on Ben Macdui, with a bitter wind chill and cloud coming and going on the summit.

Wind

On the summit expect a north-westerly wind of around 5–15 mph first thing, rising to 20–30 mph by early afternoon, with gusts of 30–40 mph at the windiest. Lower down on the open hillside it will be more like 5–15 mph. Gusts like that will be noticeable on ridges and open tops, and you will chill quickly when you stop. It gets windier still after dark, with summit gusts of 30–40 mph, so bear that in mind if you will be out late.

Cloud and visibility

The tops are likely to drift in and out of cloud, with the best chance of a clear summit in the early afternoon. The cloud base could be as low as 400–700 m in the early 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.

Rain and ground

Dry through the daylight hours, but rain arrives after dark.

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 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 4:10pm, 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. Things could still change through the day, so keep an eye on the sky.

Sunshine context Model-grid estimate, not summit sunshine

The surrounding model grid indicates 3.1 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.

Cloud may obscure this summit even while the surrounding model grid indicates sunshine. The low cloud-free summit estimate is a reason to be cautious about expecting views.

Early: Less than 1 hour
Midday: 2.8 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 10-20 mph. Gusts around 15-25 mph are possible on exposed ground. Summit cloud becomes more persistent later.

76

Afternoon · 12:00–17:00 Mixed Winds strengthen compared with the morning. Summit winds around 15-30 mph. Gusts around 30-40 mph are possible on exposed ground. Summit cloud is more persistent early in this period, with better prospects later.

53

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 60 mph and a frost, down to -5°C. 9Poor · 600 m View detailsHide details

Night beginning Wednesday 11 November 2026

Full overnight outlook

Not a night to camp on the open hill. Gusts reach about 60 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 some light rain, mostly early on, so you'll likely pitch in the rain. 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 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 rain2.3 mm Open ground · 600 m29 mph · gusts 50 mph Morning pack-upDampness possible Sleeping-bag warmthISO comfort rating about -6°C or lower

Elevation reference (open ground)

300 m19 · very poor

Wind / gust: 25 mph / 41 mph
Typical / low: -0.7°C / -2.0°C · much of the night
In cloud: 0% of modelled night
Condensation: High

600 m9 · very poor

Wind / gust: 29 mph / 50 mph
Typical / low: -1.6°C / -2.8°C · much of the night
In cloud: 80% of modelled night
Condensation: High

900 m9 · very poor

Wind / gust: 34 mph / 59 mph
Typical / low: -3.5°C / -4.7°C · much of the night
In cloud: 80% 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

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 30–40 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 granite, 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. 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 gust30-40 mphRain1.4 mm

Main factorsgusts of 30–40 mphwet rock likelymuch of the route may be in cloud

Representative rock around the summit and along available routes Biotite granite Cairngorm Pluton, Phase 2

Origin: Igneous
Broad rock-response group: Granite, gneiss or gabbro
Mapping: BGS Geology 50K · 1:50,000
Summit area: Granite, gneiss or gabbro in 100% of 17 BGS samples within 350 m
Rock-response profile: Moderate confidence

View the summit BGS record

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. 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 Macdui and Derry Cairngorm

granite, gneiss or gabbro

Ben Macdui and Cairn Gorm

granite, gneiss or gabbro

Geological detail and BGS records

Mapped variation

3 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 Biotite granite Cairngorm Pluton, Phase 2 1,071–1,309 m samples Seen on Ben Macdui and Derry Cairngorm, Ben Macdui and Cairn Gorm

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 granite Cairngorm Pluton, Phase 2 733–958 m samples Seen on Ben Macdui and Derry Cairngorm

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 Granite Cairngorm Pluton, Phase 2 Around 1,138 m Seen on Ben Macdui and Cairn Gorm

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

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

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 Macdui on Wednesday 11 November 2026. It asks about intentions, not whether you actually went out. No name or account is needed.

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Thursday 12 November 2026Confidence: Medium

Overall hill weather17Poor

Summit wind · 08:00-17:0025-40 mph northwesterly Summit gusts · 08:00-17:0040-50 mph Feels like-18 to -14°C PrecipitationUp to around 2 mm Cloud-free summit estimate25% Cloud base through day400-1,800 m Freezing level300-600 m DaylightSunrise 07:48 · Sunset 16:07 · 8.3 hours daylight

The day on the hill

A poor day on the tops of Ben Macdui, with snow on the tops and strong, gusty winds.

Snow and navigation

Snow is forecast on the tops during the morning and afternoon. The air freezing level is roughly 600 to 700 m above sea level. Snow can fall below this, but its lower limit is uncertain. The forecast model suggests less than 1 cm of fresh snowfall at around 1300 m between 08:00 and 17:00 (local time). The amount settling is uncertain and will vary with melting and drifting. Blowing snow may quickly cover paths and footprints and make navigation difficult. 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 north-westerly wind of 25–40 mph for most of the day, with gusts of 40–50 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 knock you off balance, so take care near edges and on narrow ridges.

Cloud and visibility

Cloud on the tops early should lift off them by early afternoon. The cloud base could be as low as 400–700 m early in the morning. 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.

Rain and ground

A band of snow crosses mid-morning, clearing by midday.

Warmth and kit

On the tops it will be around -8 to -4°C, feeling like -18 to -14°C in the wind. The freezing level is around 600–900 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 4:05pm, 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. 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 2.5 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.

Cloud may obscure this summit even while the surrounding model grid indicates sunshine. The low cloud-free summit estimate is a reason to be cautious about expecting views.

Early: 0 h
Midday: 1.5 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 30-40 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.

4

Afternoon · 12:00–17:00 Poor Summit winds around 25-35 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. Summit cloud is more persistent early in this period, with better prospects later.

30

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 -4°C). Lower down, a poor night to camp on open ground. 39Poor · 600 m View detailsHide details

Night beginning Thursday 12 November 2026

Full overnight outlook

Too windy for an exposed pitch up around 900 m. Lower down, a poor night to camp on open ground. 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 at every height we checked (300-900 m), down to about -4°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 m23 mph · gusts 36 mph Morning pack-upDampness possible Sleeping-bag warmthISO comfort rating about -4°C or lower

Moon overnight

Waxing crescent moon

Illuminated disc: 13%
Moonrise: Outside this window
Moonset: 17:02 GMT

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

Overnight window: 12 Nov, 17:00 GMT to 13 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: 19 mph / 29 mph
Typical / low: -1.3°C / -1.5°C · much of the night
In cloud: 0% of modelled night
Condensation: Moderate

600 m39 · poor

Wind / gust: 23 mph / 36 mph
Typical / low: -1.7°C / -1.9°C · much of the night
In cloud: 0% of modelled night
Condensation: Moderate

900 m19 · very poor

Wind / gust: 27 mph / 42 mph
Typical / low: -3.6°C / -4.0°C · much of the night
In cloud: 7% of modelled night
Condensation: Moderate

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

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 40–50 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 granite, 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. 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 gust40-50 mphRain0.4 mm

Main factorsgusts of 40–50 mphdamp or incompletely dried rock possiblemuch of the route may be in cloud

Representative rock around the summit and along available routes Biotite granite Cairngorm Pluton, Phase 2

Origin: Igneous
Broad rock-response group: Granite, gneiss or gabbro
Mapping: BGS Geology 50K · 1:50,000
Summit area: Granite, gneiss or gabbro in 100% of 17 BGS samples within 350 m
Rock-response profile: Moderate confidence

View the summit BGS record

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. 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 Macdui and Derry Cairngorm

granite, gneiss or gabbro

Ben Macdui and Cairn Gorm

granite, gneiss or gabbro

Geological detail and BGS records

Mapped variation

3 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 Biotite granite Cairngorm Pluton, Phase 2 1,071–1,309 m samples Seen on Ben Macdui and Derry Cairngorm, Ben Macdui and Cairn Gorm

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 granite Cairngorm Pluton, Phase 2 733–958 m samples Seen on Ben Macdui and Derry Cairngorm

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 Granite Cairngorm Pluton, Phase 2 Around 1,138 m Seen on Ben Macdui and Cairn Gorm

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

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

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 Macdui on Thursday 12 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

Friday 13 November 2026Confidence: Medium

Overall hill weather38Poor

Summit wind · 08:00-17:0020-35 mph westerly Summit gusts · 08:00-17:0040-50 mph Feels like-16 to -12°C PrecipitationUp to around 2 mm Cloud-free summit estimate50% Cloud base through day500-1,800 m Freezing level300-600 m DaylightSunrise 07:51 · Sunset 16:05 · 8.2 hours daylight

The day on the hill

A poor day on the tops of Ben Macdui, with snow on the tops and a bitter wind chill.

Snow and navigation

Snow is forecast on the tops in the afternoon. The air freezing level is roughly 800 to 900 m above sea level. Snow can fall below this, but its lower limit is uncertain. The forecast model suggests less than 1 cm of fresh snowfall at around 1300 m between 08:00 and 17:00 (local time). The amount settling is uncertain and will vary with melting and drifting. Blowing snow may quickly cover paths and footprints and make navigation difficult. 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 westerly wind of 20–35 mph for most of the day, with gusts of 40–50 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. It gets windier still after dark, with summit gusts of 40–50 mph, so bear that in mind if you will be out late.

Cloud and visibility

The tops start clear, but the cloud comes down onto them around midday. The cloud base could be as low as 500–800 m mid-afternoon.

Rain and ground

Snow arrives mid-afternoon.

Warmth and kit

On the tops it will be around -8 to -4°C, feeling like -16 to -12°C in the wind. The freezing level is around 400–700 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 4:05pm, so allow time to get off the hill before dark, and carry a head torch.

Forecast confidence

The forecast models disagree on how strong the wind will be, so it could be noticeably stronger than this. 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 4.1 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: 4 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 20-30 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.

58

Afternoon · 12:00–17:00 Poor Summit winds around 25-35 mph. Gusts around 40-50 mph are possible on exposed ground. Gusts this strong can make walking into it hard work, with buffeting on ridges and edges. Rain is forecast during this period.

18

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 above about 600 m (gusts of about 50 mph). Lower down, a poor night to camp on open ground. 19Poor · 600 m View detailsHide details

Night beginning Friday 13 November 2026

Full overnight outlook

Too windy for an exposed pitch above about 600 m. Lower down, a poor night to camp on open ground. Gusts reach about 50 mph around 900 m and nearer 35 mph around 300 m, enough to damage a tent on open ground. Pitch low down and in real shelter, or leave it for another night. Expect some light rain, mostly early on, so you'll likely pitch in the rain. 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 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 rain1.7 mm Open ground · 600 m31 mph · gusts 43 mph Morning pack-upDampness possible Sleeping-bag warmthISO comfort rating about 0°C or lower

Moon overnight

Waxing crescent moon

Illuminated disc: 20%
Moonrise: Outside this window
Moonset: 18:08 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: 13 Nov, 17:00 GMT to 14 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: 26 mph / 36 mph
Typical / low: 3.3°C / 2.5°C · much of the night
In cloud: 0% of modelled night
Condensation: High

600 m19 · very poor

Wind / gust: 31 mph / 43 mph
Typical / low: 2.8°C / 2.0°C · much of the night
In cloud: 67% of modelled night
Condensation: High

900 m9 · very poor

Wind / gust: 36 mph / 50 mph
Typical / low: 0.9°C / 0.2°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.

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

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 40–50 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 granite, 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. 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 gust40-50 mphRain1.1 mm

Main factorsgusts of 40–50 mphwet rock likelymuch of the route may be in cloud

Representative rock around the summit and along available routes Biotite granite Cairngorm Pluton, Phase 2

Origin: Igneous
Broad rock-response group: Granite, gneiss or gabbro
Mapping: BGS Geology 50K · 1:50,000
Summit area: Granite, gneiss or gabbro in 100% of 17 BGS samples within 350 m
Rock-response profile: Moderate confidence

View the summit BGS record

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. 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 Macdui and Derry Cairngorm

granite, gneiss or gabbro

Ben Macdui and Cairn Gorm

granite, gneiss or gabbro

Geological detail and BGS records

Mapped variation

3 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 Biotite granite Cairngorm Pluton, Phase 2 1,071–1,309 m samples Seen on Ben Macdui and Derry Cairngorm, Ben Macdui and Cairn Gorm

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 granite Cairngorm Pluton, Phase 2 733–958 m samples Seen on Ben Macdui and Derry Cairngorm

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 Granite Cairngorm Pluton, Phase 2 Around 1,138 m Seen on Ben Macdui and Cairn Gorm

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

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

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.

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Saturday 14 November 2026Confidence: Medium

Overall hill weather31Poor

Summit wind · 08:00-17:0025-40 mph westerly Summit gusts · 08:00-17:0045-55 mph Feels like-14 to -10°C PrecipitationUp to around 2 mm Cloud-free summit estimate45% Cloud base through day900-1,700 m Freezing level900-1,200 m DaylightSunrise 07:53 · Sunset 16:03 · 8.2 hours daylight

The day on the hill

A poor day on the tops of Ben Macdui, with snow on the tops and strong, gusty winds.

Snow and navigation

Snow is forecast on the tops during the morning and afternoon. The air freezing level is roughly 1000 to 1200 m above sea level. Snow can fall below this, but its lower limit is uncertain. The forecast model suggests less than 1 cm of fresh snowfall at around 1300 m between 08:00 and 17:00 (local time). The amount settling is uncertain and will vary with melting and drifting.

Wind

On the summit expect a westerly wind of 25–40 mph for most of the day, with gusts of 45–55 mph at the windiest. Lower down on the open hillside it will be more like 10–20 mph. Gusts like that are strong enough to knock you off balance, so take care near edges and on narrow ridges.

Cloud and visibility

The tops are likely to drift in and out of cloud, with the best chance of a clear summit early on. The cloud base lowers through the day. The cloud base could be as low as 900–1200 m by late afternoon. A few forecast models bring it lower still, to around 500–800 m.

Rain and ground

Snow is possible on the tops. The timing could shift by a few hours.

Warmth and kit

On the tops it will be around -4 to 0°C, feeling like -14 to -10°C in the wind. The freezing level is around 1000–1300 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 4:05pm, so allow time to get off the hill before dark, and carry a head torch.

Forecast confidence

The forecast models disagree on how strong the wind will be, so it could be noticeably stronger than this. 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 3.9 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.

Cloud may obscure this summit even while the surrounding model grid indicates sunshine. The low cloud-free summit estimate is a reason to be cautious about expecting views.

Early: 1.6 h
Midday: 1.3 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 30-40 mph. Gusts around 45-55 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 possible during the main walking period, but its timing may shift by several hours.

37

Afternoon · 12:00–17:00 Poor Summit winds around 25-35 mph. Gusts around 40-50 mph are possible on exposed ground. Gusts this strong can make walking into it hard work, with buffeting on ridges and edges. Summit cloud becomes more persistent later. Rain is forecast during this period. Rain is possible during the main walking period, but its timing may shift by several hours.

25

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). Lower down, a mixed night to camp, mainly because of the wind. 39Poor · 600 m View detailsHide details

Night beginning Saturday 14 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. Expect a little rain, mostly early on, so you'll likely pitch in the rain. 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. The air is damp up around 900 m, so expect heavy condensation. Leave the vents open. 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 rain0.9 mm Open ground · 600 m20 mph · gusts 36 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: 19:25 GMT

Extensive cloud may limit moonlight. 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 m58 · mixed

Wind / gust: 17 mph / 29 mph
Typical / low: 3.1°C / 2.9°C · much of the night
In cloud: 0% of modelled night
Condensation: Moderate

600 m39 · poor

Wind / gust: 20 mph / 36 mph
Typical / low: 2.4°C / 2.3°C · much of the night
In cloud: 0% of modelled night
Condensation: Moderate

900 m19 · very poor

Wind / gust: 23 mph / 42 mph
Typical / low: 0.5°C / 0.4°C · much of the night
In cloud: 100% 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.

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

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 45–55 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 granite, 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. 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 gust45-55 mphRain0.8 mm

Main factorsgusts of 45–55 mphwet 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 Biotite granite Cairngorm Pluton, Phase 2

Origin: Igneous
Broad rock-response group: Granite, gneiss or gabbro
Mapping: BGS Geology 50K · 1:50,000
Summit area: Granite, gneiss or gabbro in 100% of 17 BGS samples within 350 m
Rock-response profile: Moderate confidence

View the summit BGS record

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. 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 Macdui and Derry Cairngorm

granite, gneiss or gabbro

Ben Macdui and Cairn Gorm

granite, gneiss or gabbro

Geological detail and BGS records

Mapped variation

3 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 Biotite granite Cairngorm Pluton, Phase 2 1,071–1,309 m samples Seen on Ben Macdui and Derry Cairngorm, Ben Macdui and Cairn Gorm

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 granite Cairngorm Pluton, Phase 2 733–958 m samples Seen on Ben Macdui and Derry Cairngorm

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 Granite Cairngorm Pluton, Phase 2 Around 1,138 m Seen on Ben Macdui and Cairn Gorm

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

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

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 Macdui 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

Sunday 15 November 2026Confidence: Medium

Overall hill weather46Poor

Summit wind · 08:00-17:005-15 mph southwesterly Summit gusts · 08:00-17:0010-20 mph Feels like-10 to -6°C PrecipitationUp to around 2 mm Cloud-free summit estimate25% Cloud base through day400-1,200 m Freezing level800-1,100 m DaylightSunrise 07:55 · Sunset 16:02 · 8.1 hours daylight

The day on the hill

A poor day on the tops of Ben Macdui, with snow on the tops and cloud coming and going on the summit.

Snow and navigation

Snow is forecast on the tops during the morning and afternoon. The air freezing level is roughly 900 to 1100 m above sea level. Snow can fall below this, but its lower limit is uncertain. The forecast model suggests around 1 cm of fresh snowfall at around 1300 m between 08:00 and 17:00 (local time). The amount settling is uncertain and will vary with melting and drifting.

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

Expect the summit to be in cloud for most of the day. The cloud base could be as low as 400–700 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. Mist or fog is possible in the valleys through the morning. Any sunshine is more likely on lower ground than on the summit.

Rain and ground

Snow at first, clearing by midday. Some forecast models keep it drier in the afternoon.

Warmth and kit

On the tops it will be around -4 to 0°C, feeling like -10 to -6°C in the wind. The freezing level is around 900–1200 m, so it will be below freezing on the tops. Take a hat, gloves, a windproof and a spare warm layer. 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 4pm, so allow time to get off the hill before dark, and carry a head torch.

Forecast confidence

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 5.6 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.

Cloud may obscure this summit even while the surrounding model grid indicates sunshine. The low cloud-free summit estimate is a reason to be cautious about expecting views.

Early: 1.9 h
Midday: 2.6 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 5-15 mph. Gusts around 10-20 mph are possible on exposed ground. Rain is forecast during this period.

45

Afternoon · 12:00–17:00 Poor Summit winds around 5-15 mph. Gusts around 10-20 mph are possible on exposed ground. Rain is forecast during this period. Rain is possible during the afternoon, but forecast models disagree on whether it will fall.

46

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 damp air: a frost, down to 0°C. 59Mixed · 600 m View detailsHide details

Night beginning Sunday 15 November 2026

Full overnight outlook

A mixed night to camp, mainly because of damp air. Light winds on open ground, gusting no more than about 20 mph. 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 up around 900 m, down to about 0°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 17 mph Morning pack-upDampness possible Sleeping-bag warmthISO comfort rating about -2°C or lower

Moon overnight

Waxing crescent moon

Illuminated disc: 36%
Moonrise: Outside this window
Moonset: 20:46 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: 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 m59 · mixed

Wind / gust: 9 mph / 14 mph
Typical / low: 2.8°C / 2.4°C · much of the night
In cloud: 0% of modelled night
Condensation: High

600 m59 · mixed

Wind / gust: 11 mph / 17 mph
Typical / low: 2.0°C / 1.5°C · much of the night
In cloud: 33% of modelled night
Condensation: High

900 m39 · poor

Wind / gust: 12 mph / 19 mph
Typical / low: 0.0°C / -0.4°C · much of the night
In cloud: 33% 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 -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

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. Cloud on the tops may make route-finding and retreat harder. The rock around the summit is mostly granite, 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. 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 gust10-20 mphRain1.6 mm

Main factorswet rock likelymuch of the route may be in cloudSnow is likely to be lying on high ground, with further snowfall possible during the day

Representative rock around the summit and along available routes Biotite granite Cairngorm Pluton, Phase 2

Origin: Igneous
Broad rock-response group: Granite, gneiss or gabbro
Mapping: BGS Geology 50K · 1:50,000
Summit area: Granite, gneiss or gabbro in 100% of 17 BGS samples within 350 m
Rock-response profile: Moderate confidence

View the summit BGS record

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. 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 Macdui and Derry Cairngorm

granite, gneiss or gabbro

Ben Macdui and Cairn Gorm

granite, gneiss or gabbro

Geological detail and BGS records

Mapped variation

3 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 Biotite granite Cairngorm Pluton, Phase 2 1,071–1,309 m samples Seen on Ben Macdui and Derry Cairngorm, Ben Macdui and Cairn Gorm

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 granite Cairngorm Pluton, Phase 2 733–958 m samples Seen on Ben Macdui and Derry Cairngorm

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 Granite Cairngorm Pluton, Phase 2 Around 1,138 m Seen on Ben Macdui and Cairn Gorm

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

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

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 Macdui 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

Monday 16 November 2026Confidence: Unavailable

Overall hill weather54Mixed

Summit wind · 08:00-17:0015-30 mph southeasterly Summit gusts · 08:00-17:0030-40 mph Feels like-14 to -10°C PrecipitationLittle or none Cloud-free summit estimate35% Cloud base through day800-1,700 m Freezing level700-1,000 m DaylightSunrise 07:57 · Sunset 16:00 · 8.1 hours daylight

The day on the hill

A mixed day on Ben Macdui, with a bitter wind chill and cloud coming down onto the tops.

Wind

On the summit expect a south-easterly wind of 15–30 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. It gets windier still after dark, with summit gusts of 35–45 mph, so bear that in mind if you will be out late.

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. A few forecast models bring it lower still, to around 400–700 m. 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.

Rain and ground

Mostly dry, but some forecast models bring rain in the morning.

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 800–1100 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 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 7.7 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.

Cloud may obscure this summit even while the surrounding model grid indicates sunshine. The low cloud-free summit estimate is a reason to be cautious about expecting views.

Early: 1.9 h
Midday: 4 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. Some forecast models bring rain during the morning, while others keep it mostly dry.

74

Afternoon · 12:00–17:00 Poor Summit winds around 20-30 mph. Gusts around 30-40 mph are possible on exposed ground. Some forecast models bring rain during the afternoon, while others keep it mostly dry.

33

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 65 mph and around 10 mm of rain. 9Poor · 600 m View detailsHide details

Night beginning Monday 16 November 2026

Full overnight outlook

Not a night to camp on the open hill. Gusts reach about 65 mph around 900 m and nearer 45 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 a wet night, around 10 mm of rain, 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 frost up around 900 m, down to about -1°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 rain10.3 mm Open ground · 600 m33 mph · gusts 56 mph Morning pack-upDampness possible Sleeping-bag warmthISO comfort rating about -2°C or lower

Moon overnight

First-quarter moon

Illuminated disc: 46%
Moonrise: Outside this window
Moonset: 22:08 GMT

Extensive cloud may limit moonlight. 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 m9 · very poor

Wind / gust: 28 mph / 47 mph
Typical / low: 4.5°C / 1.1°C · much of the night
In cloud: 0% of modelled night
Condensation: High

600 m9 · very poor

Wind / gust: 33 mph / 56 mph
Typical / low: 2.1°C / 1.1°C · much of the night
In cloud: 33% of modelled night
Condensation: High

900 m0 · very poor

Wind / gust: 39 mph / 67 mph
Typical / low: 1.2°C / -0.8°C · much of the night
In cloud: 53% 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 -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

Daytime · exposed rockClimbing & scramblingBetaVery poor conditions for exposed scrambling. Poor7 View detailsHide details

Generic exposed-rock guidance

Full climbing & scrambling outlook

Very poor conditions for exposed scrambling. The rock should be mostly dry, though drainage lines and shaded holds may still be damp. Snow is likely on the rock and ledges, so it becomes a winter route. Gusts of 30–40 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 granite, 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. 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 gust30-40 mphRain0.1 mm

Main factorsgusts of 30–40 mphmuch of the route may be in cloudSnow is likely to be lying on high ground, with further snowfall possible during the day

Representative rock around the summit and along available routes Biotite granite Cairngorm Pluton, Phase 2

Origin: Igneous
Broad rock-response group: Granite, gneiss or gabbro
Mapping: BGS Geology 50K · 1:50,000
Summit area: Granite, gneiss or gabbro in 100% of 17 BGS samples within 350 m
Rock-response profile: Moderate confidence

View the summit BGS record

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. 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 Macdui and Derry Cairngorm

granite, gneiss or gabbro

Ben Macdui and Cairn Gorm

granite, gneiss or gabbro

Geological detail and BGS records

Mapped variation

3 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 Biotite granite Cairngorm Pluton, Phase 2 1,071–1,309 m samples Seen on Ben Macdui and Derry Cairngorm, Ben Macdui and Cairn Gorm

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 granite Cairngorm Pluton, Phase 2 733–958 m samples Seen on Ben Macdui and Derry Cairngorm

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 Granite Cairngorm Pluton, Phase 2 Around 1,138 m Seen on Ben Macdui and Cairn Gorm

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

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

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 Macdui 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

Tuesday 17 November 2026Confidence: Unavailable

Overall hill weather-13Severe hill conditions

Summit wind · 08:00-17:0030-50 mph southwesterly Summit gusts · 08:00-17:0055-65 mph Feels like-16 to -12°C PrecipitationAround 5-10 mm Cloud-free summit estimate20% Cloud base through day400-700 m Freezing level1,100-1,400 m DaylightSunrise 07:59 · Sunset 15:58 · 8.0 hours daylight

The day on the hill

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

Snow and navigation

Snow is forecast on the tops during the morning and afternoon. The air freezing level is roughly 1200 to 1300 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 16:00 (local time). The amount settling is uncertain and will vary with melting and drifting. 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 around 40–50 mph first thing, easing to 30–40 mph by mid-afternoon, with gusts of 55–65 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 very difficult and tiring, with a risk of being blown off your feet. Avoid exposed ridges and edges. If the windier forecast models are right, summit gusts could reach 80–90 mph.

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. Mist or fog is possible in the valleys through the morning. 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

Snow for much of the day, turning lighter later.

Warmth and kit

On the tops it will be around -4 to 0°C, feeling like -16 to -12°C in the wind. The freezing level is close to summit height. 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 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.

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

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

Morning · 08:00–12:00 Severe hill conditions Summit winds around 35-50 mph. 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.

-25

Afternoon · 12:00–17:00 Severe hill conditions Winds ease compared with the morning. Summit winds around 30-40 mph. Gusts around 45-55 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.

-1

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 above about 600 m (gusts of about 50 mph). Lower down, a poor night to camp on open ground. 19Poor · 600 m View detailsHide details

Night beginning Tuesday 17 November 2026

Full overnight outlook

Too windy for an exposed pitch above about 600 m. Lower down, a poor night to camp on open ground. Gusts reach about 50 mph around 900 m and nearer 35 mph around 300 m, enough to damage a tent on open ground. Pitch low down and in real shelter, or leave it for another night. Expect some light rain, 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. Overnight lows of about 4°C at 900 m. A 3-season bag rated to about 2°C comfort, and a warm mat, should do. Allow more if you sleep cold.

Overnight rain2.2 mm Open ground · 600 m31 mph · gusts 44 mph Morning pack-upDampness possible Sleeping-bag warmthISO comfort rating about 2°C or lower

Moon overnight

Waxing gibbous moon

Illuminated disc: 55%
Moonrise: Outside this window
Moonset: 23:30 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: 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 m39 · poor

Wind / gust: 26 mph / 37 mph
Typical / low: 7.4°C / 6.7°C · much of the night
In cloud: 0% of modelled night
Condensation: High

600 m19 · very poor

Wind / gust: 31 mph / 44 mph
Typical / low: 6.3°C / 5.4°C · much of the night
In cloud: 60% of modelled night
Condensation: High

900 m9 · very poor

Wind / gust: 37 mph / 52 mph
Typical / low: 4.5°C / 3.5°C · much of the night
In cloud: 100% of modelled night
Condensation: High

Warmth planning: As a broad starting point, consider a 3-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

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 granite, 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. 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 mphRain7.8 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 Biotite granite Cairngorm Pluton, Phase 2

Origin: Igneous
Broad rock-response group: Granite, gneiss or gabbro
Mapping: BGS Geology 50K · 1:50,000
Summit area: Granite, gneiss or gabbro in 100% of 17 BGS samples within 350 m
Rock-response profile: Moderate confidence

View the summit BGS record

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. 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 Macdui and Derry Cairngorm

granite, gneiss or gabbro

Ben Macdui and Cairn Gorm

granite, gneiss or gabbro

Geological detail and BGS records

Mapped variation

3 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 Biotite granite Cairngorm Pluton, Phase 2 1,071–1,309 m samples Seen on Ben Macdui and Derry Cairngorm, Ben Macdui and Cairn Gorm

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 granite Cairngorm Pluton, Phase 2 733–958 m samples Seen on Ben Macdui and Derry Cairngorm

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 Granite Cairngorm Pluton, Phase 2 Around 1,138 m Seen on Ben Macdui and Cairn Gorm

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

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

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 Macdui 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

Ben Macdui (Beinn Macduibh) weather forecast.

See the wind across Ben Macdui.

Choose your hill day.

The day on the hill

Wind

Cloud and visibility

Rain and ground

Warmth and kit

Daylight

Forecast confidence

Full overnight outlook

Elevation reference (open ground)

Full climbing & scrambling outlook

Rock groups along the sampled routes

Ben Macdui and Derry Cairngorm

Ben Macdui and Cairn Gorm

3 rock types appear in the mapped samples

After dark: aurora and stargazing

The day on the hill

Snow and navigation

Wind

Cloud and visibility

Rain and ground

Warmth and kit

Daylight

Forecast confidence

Full overnight outlook

Moon overnight

Elevation reference (open ground)

Full climbing & scrambling outlook

Rock groups along the sampled routes

Ben Macdui and Derry Cairngorm

Ben Macdui and Cairn Gorm

3 rock types appear in the mapped samples

After dark: aurora and stargazing

The day on the hill

Snow and navigation

Wind

Cloud and visibility

Rain and ground

Warmth and kit

Daylight

Forecast confidence

Full overnight outlook

Moon overnight

Elevation reference (open ground)

Full climbing & scrambling outlook

Rock groups along the sampled routes

Ben Macdui and Derry Cairngorm

Ben Macdui and Cairn Gorm

3 rock types appear in the mapped samples

After dark: aurora and stargazing

The day on the hill

Snow and navigation

Wind

Cloud and visibility

Rain and ground

Warmth and kit

Daylight

Forecast confidence

Full overnight outlook

Moon overnight

Elevation reference (open ground)

Full climbing & scrambling outlook

Rock groups along the sampled routes

Ben Macdui and Derry Cairngorm

Ben Macdui and Cairn Gorm

3 rock types appear in the mapped samples

After dark: aurora and stargazing

The day on the hill

Snow and navigation

Wind

Cloud and visibility

Rain and ground

Warmth and kit

Daylight

Forecast confidence

Full overnight outlook

Moon overnight

Elevation reference (open ground)