A fine day on Streap: dry, with light winds and clear tops for most of the day.
Wind
On the summit expect light winds of up to 15 mph, mainly south-easterly, with gusts of 10–20 mph at the windiest.
Cloud and visibility
The tops are likely to stay mostly clear of cloud, though brief patches cannot be ruled out. The air should be clear, so expect far-reaching views as long as the tops stay clear.
Rain and ground
It should stay dry.
Warmth and kit
On the tops it will be around 2 to 6°C, feeling like -2 to 2°C in the wind. The freezing level is above the summits. Take a hat, gloves, a windproof and a spare warm layer.
Daylight
A short day, with only about 9 hours of daylight. Sunset is around 4:30pm, so allow time to get off the hill before dark, and carry a head torch.
Sunshine context Model-grid estimate, not summit sunshine
The surrounding model grid indicates 7.5 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.
Morning · 08:00–12:00
ExcellentSummit winds around 5-15 mph. Gusts around 10-20 mph are possible on exposed ground.
100
Afternoon · 12:00–17:00
ExcellentSummit winds around 5-15 mph. Gusts around 10-20 mph are possible on exposed ground.
100
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: dry, with light winds.59Mixed · 600 mView detailsHide details
Night beginning Wednesday 4 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 20 mph. It should stay dry. A cold night, down to about 3°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.
Clear spells may allow a view of the Moon. Illumination describes the sunlit part of the Moon, not brightness at your pitch.
Overnight window: 4 Nov, 17:00 GMT to 5 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 / 15 mph
Typical / low
3.9°C / 3.7°C · much of the night
In cloud
0% of modelled night
Condensation
Low
600 m59 · mixed
Wind / gust
10 mph / 18 mph
Typical / low
3.9°C / 3.7°C · much of the night
In cloud
0% of modelled night
Condensation
Low
900 m59 · mixed
Wind / gust
12 mph / 21 mph
Typical / low
3.2°C / 2.8°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 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.
Excellent 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 schist, a flaky, mica-rich rock that splits into layers. It has only fair grip when dry and is slippery when wet, as the mica gives it a greasy sheen. It splits easily along its layers, so flakes and ledges can be loose, and it is often grassy and vegetated. 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
PeliteLochailort Pelite Formation
Origin
Metamorphic
Broad rock-response group
Psammite, pelite or semipelite
Mapping
BGS Geology 50K · 1:50,000
Summit area
Psammite, pelite or semipelite in 94% of 17 BGS samples within 350 m
Schist is a flaky, mica-rich rock that splits into layers. It has only fair grip when dry and is slippery when wet, as the mica gives it a greasy sheen. It splits easily along its layers, so flakes and ledges can be loose, and it is often grassy and vegetated. 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.
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.
Schist is a flaky, mica-rich rock that splits into layers. It has only fair grip when dry and is slippery when wet, as the mica gives it a greasy sheen. It splits easily along its layers, so flakes and ledges can be loose, and it is often grassy and vegetated.
BGS record →
Summit-area sample
Psammite and peliteBeinn An Tuim Striped Formation
Psammite banded with schist is a hard, sandy rock with flakier, mica-rich layers. It grips well on the harder bands when dry and is slippery on the mica-rich layers when wet. The flaky layers split easily, so some flakes and ledges are loose.
BGS record →
Summit-area sample
Foliated microdioriteArgyll And Northern Highlands Granitic Suite
Diorite is a hard, crystalline rock. It grips well when dry and is fair when wet. It is generally solid, though cracked into blocks along its joints.
Night beginning 2026-11-04. All times are UK local time.
A noticeable aurora display is unlikely; any glow may be faint or camera-only
A noticeable aurora display is unlikely here. Any glow may be faint or camera-only. Activity peaks around Kp 3.7 (on a 0 to 9 scale).
Activity can change at short notice. Check again on the night.
Stargazing
Very good sky conditions during the best available spell: 4 Nov, 22:00 GMT to 23:00 GMT.
Mostly clear.
Moon-free dark sky: 4 Nov, 18:40 GMT to 5 Nov, 03:00 GMT.
Sky conditions through the night
Fully dark periods. Conditions can change between forecast hours.
Time
Viewing conditions
4 Nov, 18:40 GMT to 19:00 GMT
Mixed sky conditions
Forecasts disagree about rain or haze, so it could be murkier than this looks.
Forecast models disagree.
4 Nov, 19:00 GMT to 20:00 GMT
Mixed sky conditions
Forecasts disagree about rain or haze, so it could be murkier than this looks.
Forecast models disagree.
4 Nov, 20:00 GMT to 21:00 GMT
Good sky conditions
Forecasts disagree about rain or haze, so it could be murkier than this looks.
Forecast models disagree.
4 Nov, 21:00 GMT to 22:00 GMT
Very good sky conditions
Mostly clear.
4 Nov, 22:00 GMT to 23:00 GMT
Very good sky conditions
Mostly clear.
4 Nov, 23:00 GMT to 5 Nov, 00:00 GMT
Mixed sky conditions
Forecasts disagree about rain or haze, so it could be murkier than this looks.
Forecast models disagree.
5 Nov, 00:00 GMT to 01:00 GMT
Mixed sky conditions
Some forecasts show clear spells, others keep it cloudy; check again nearer the time.
Forecast models disagree.
5 Nov, 01:00 GMT to 02:00 GMT
Mixed sky conditions
Some forecasts show clear spells, others keep it cloudy; check again nearer the time.
Forecast models disagree.
5 Nov, 02:00 GMT to 03:00 GMT
Mixed sky conditions
Some forecasts show clear spells, others keep it cloudy; check again nearer the time.
Forecast models disagree.
5 Nov, 03:00 GMT to 04:00 GMT
Mixed sky conditions
Some forecasts show clear spells, others keep it cloudy; check again nearer the time.
Forecast models disagree.
5 Nov, 04:00 GMT to 05:00 GMT
Mixed sky conditions
Some forecasts show clear spells, others keep it cloudy; check again nearer the time.
Forecast models disagree.
5 Nov, 05:00 GMT to 05:30 GMT
Mixed 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 18% illuminated.
Moonrise around 5 Nov, 03:00 GMT.
Full darkness: 4 Nov, 18:40 GMT to 5 Nov, 05:30 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.
Orionids 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.
Southern Taurids: peak around 10 October 2026.
Orionids: peak around 21 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 193 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.
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.
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 Streap on Wednesday 4 November 2026. It asks about intentions, not whether you actually went out. No name or account is needed.
Summit wind · 08:00-17:005-20 mph southeasterlySummit gusts · 08:00-17:0015-25 mphFeels like-4 to 0°CPrecipitationLittle or noneCloud-free summit estimate85%Cloud base through day800-1,400 mFreezing levelAbove summitDaylightSunrise 07:39 · Sunset 16:29 · 8.8 hours daylight
The day on the hill
A fine day on Streap: dry, with light winds and clear tops for most of the day.
Wind
On the summit expect a south-easterly wind of 5–20 mph for most of the day, with gusts of 15–25 mph at the windiest. Lower down on the open hillside the wind will be light, under 10 mph.
Cloud and visibility
The tops should stay mostly clear of cloud. A few forecast models bring the cloud base down to around 700–1000 m at times. The cloud base sits close to summit height, so the top could go in and out of cloud at short notice. Patchy mist is possible in sheltered valleys early on. The air should be clear, so expect far-reaching views as long as the tops stay clear.
Rain and ground
It should stay dry.
Warmth and kit
On the tops it will be around 0 to 4°C, feeling like -4 to 0°C in the wind. The freezing level is above the summits. Take a hat, gloves, a windproof and a spare warm layer.
Daylight
A short day, with only about 9 hours of daylight. Sunset is around 4:30pm, 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. 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 5.3 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.
Morning · 08:00–12:00
ExcellentSummit winds around 5-15 mph. Gusts around 15-25 mph are possible on exposed ground.
95
Afternoon · 12:00–17:00
ExcellentSummit winds around 10-20 mph. Gusts around 15-25 mph are possible on exposed ground. Summit cloud becomes more persistent later.
90
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: gusts of about 25 mph.59Mixed · 600 mView detailsHide details
Night beginning Thursday 5 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 southeast. It should stay dry. 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 2°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.
Extensive cloud may limit moonlight. Illumination describes the sunlit part of the Moon, not brightness at your pitch.
Overnight window: 5 Nov, 17:00 GMT to 6 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
11 mph / 19 mph
Typical / low
4.2°C / 3.8°C · much of the night
In cloud
0% of modelled night
Condensation
Moderate
600 m59 · mixed
Wind / gust
14 mph / 22 mph
Typical / low
4.2°C / 3.8°C · much of the night
In cloud
0% of modelled night
Condensation
Moderate
900 m59 · mixed
Wind / gust
16 mph / 26 mph
Typical / low
2.9°C / 2.0°C · much of the night
In cloud
40% 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 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.
Excellent 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 schist, a flaky, mica-rich rock that splits into layers. It has only fair grip when dry and is slippery when wet, as the mica gives it a greasy sheen. It splits easily along its layers, so flakes and ledges can be loose, and it is often grassy and vegetated. 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 gust15-25 mphRain0.0 mm
Representative rock around the summit
PeliteLochailort Pelite Formation
Origin
Metamorphic
Broad rock-response group
Psammite, pelite or semipelite
Mapping
BGS Geology 50K · 1:50,000
Summit area
Psammite, pelite or semipelite in 94% of 17 BGS samples within 350 m
Schist is a flaky, mica-rich rock that splits into layers. It has only fair grip when dry and is slippery when wet, as the mica gives it a greasy sheen. It splits easily along its layers, so flakes and ledges can be loose, and it is often grassy and vegetated. 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.
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.
Schist is a flaky, mica-rich rock that splits into layers. It has only fair grip when dry and is slippery when wet, as the mica gives it a greasy sheen. It splits easily along its layers, so flakes and ledges can be loose, and it is often grassy and vegetated.
BGS record →
Summit-area sample
Psammite and peliteBeinn An Tuim Striped Formation
Psammite banded with schist is a hard, sandy rock with flakier, mica-rich layers. It grips well on the harder bands when dry and is slippery on the mica-rich layers when wet. The flaky layers split easily, so some flakes and ledges are loose.
BGS record →
Summit-area sample
Foliated microdioriteArgyll And Northern Highlands Granitic Suite
Diorite is a hard, crystalline rock. It grips well when dry and is fair when wet. It is generally solid, though cracked into blocks along its joints.
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 darkBetaSome forecasts show clear spells, others keep it cloudy; check again nearer the time.View forecastClose forecast
After dark: aurora and stargazing
Night beginning 2026-11-05. All times are UK local time.
A noticeable aurora display is unlikely; any glow may be faint or camera-only
Too quiet for a likely sighting from here. Activity peaks around Kp 2.7 (on a 0 to 9 scale). It would take about Kp 3.7 for a camera to pick up a glow low in the north, though that is not a hard line.
Activity can change at short notice. Check again on the night.
Stargazing
Mixed sky conditions during the best available spell: 6 Nov, 00:00 GMT to 01:00 GMT.
Some forecasts show clear spells, others keep it cloudy; check again nearer the time.
Moon-free dark sky: 5 Nov, 18:40 GMT to 6 Nov, 04:30 GMT.
Sky conditions through the night
Fully dark periods. Conditions can change between forecast hours.
Time
Viewing conditions
5 Nov, 18:40 GMT to 19:00 GMT
Mixed sky conditions
Some forecasts show clear spells, others keep it cloudy; check again nearer the time.
Forecast models disagree.
5 Nov, 19:00 GMT to 20:00 GMT
Poor sky conditions
Some forecasts show clear spells, others keep it cloudy; check again nearer the time.
Forecast models disagree.
5 Nov, 20:00 GMT to 21:00 GMT
Poor sky conditions
Mostly cloudy, so little chance of seeing the stars.
5 Nov, 21:00 GMT to 22:00 GMT
Poor sky conditions
Mostly cloudy, so little chance of seeing the stars.
5 Nov, 22:00 GMT to 23:00 GMT
Mixed sky conditions
Some forecasts show clear spells, others keep it cloudy; check again nearer the time.
Forecast models disagree.
5 Nov, 23:00 GMT to 6 Nov, 00:00 GMT
Mixed sky conditions
Some forecasts show clear spells, others keep it cloudy; check again nearer the time.
Forecast models disagree.
6 Nov, 00:00 GMT to 01:00 GMT
Mixed sky conditions
Some forecasts show clear spells, others keep it cloudy; check again nearer the time.
Forecast models disagree.
6 Nov, 01:00 GMT to 02:00 GMT
Mixed sky conditions
Some forecasts show clear spells, others keep it cloudy; check again nearer the time.
Forecast models disagree.
6 Nov, 02:00 GMT to 03:00 GMT
Poor sky conditions
Mostly cloudy, so little chance of seeing the stars.
6 Nov, 03:00 GMT to 04:00 GMT
Mixed sky conditions
Some forecasts show clear spells, others keep it cloudy; check again nearer the time.
Forecast models disagree.
6 Nov, 04:00 GMT to 05:00 GMT
Poor sky conditions
Some forecasts show clear spells, others keep it cloudy; check again nearer the time.
Forecast models disagree.
6 Nov, 05:00 GMT to 05:30 GMT
Mixed sky conditions
Mostly cloudy, so little chance of seeing the stars.
Moon, darkness and meteor showers
Crescent moon, about 10% illuminated.
Moonrise around 6 Nov, 04:30 GMT.
Full darkness: 5 Nov, 18:40 GMT to 6 Nov, 05:30 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.
Orionids 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.
Orionids: peak around 21 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 193 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.
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.
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 Streap on Thursday 5 November 2026. It asks about intentions, not whether you actually went out. No name or account is needed.
Summit wind · 08:00-17:000-15 mph southeasterlySummit gusts · 08:00-17:0010-20 mphFeels like-4 to 0°CPrecipitationLittle or noneCloud-free summit estimate55%Cloud base through day700-1,300 mFreezing levelAbove summitDaylightSunrise 07:41 · Sunset 16:27 · 8.8 hours daylight
The day on the hill
A fine day on Streap: dry, with light winds.
Wind
On the summit expect light winds of up to 15 mph, mainly south-easterly, with gusts of 10–20 mph at the windiest. Lower down on the open hillside the wind will be light, under 5 mph.
Cloud and visibility
The tops are likely to drift in and out of cloud, with the best chance of a clear summit mid-morning. A few forecast models bring the cloud base down to around 600–900 m at times. The cloud base sits close to summit height, so the top could go in and out of cloud at short notice.
Rain and ground
It should stay dry.
Warmth and kit
On the tops it will be around 0 to 4°C, feeling like -4 to 0°C in the wind. The freezing level is above the summits. Take a hat, gloves, a windproof and a spare warm layer.
Daylight
A short day, with only about 9 hours of daylight. Sunset is around 4:25pm, 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 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 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.
Morning · 08:00–12:00
ExcellentSummit winds around 5-15 mph. Gusts around 10-20 mph are possible on exposed ground. Summit cloud is more persistent early in this period, with better prospects later.
87
Afternoon · 12:00–17:00
GoodSummit winds around 0-10 mph. Gusts around 5-15 mph are possible on exposed ground. Summit cloud becomes more persistent later.
83
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: dry, with light winds.59Mixed · 600 mView detailsHide details
Night beginning Friday 6 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 15 mph. It should stay dry. The air is damp up around 900 m, so expect heavy condensation. Leave the vents open. A cold night, down to about 2°C around 900 m. A 3-season bag rated to about 2°C comfort, and a warm mat, should do. Allow more if you sleep cold.
Cloud may affect views of the Moon. Illumination describes the sunlit part of the Moon, not brightness at your pitch.
Overnight window: 6 Nov, 17:00 GMT to 7 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
6 mph / 10 mph
Typical / low
4.3°C / 3.9°C · much of the night
In cloud
0% of modelled night
Condensation
Moderate
600 m59 · mixed
Wind / gust
8 mph / 11 mph
Typical / low
4.3°C / 3.9°C · much of the night
In cloud
0% of modelled night
Condensation
Moderate
900 m59 · mixed
Wind / gust
9 mph / 13 mph
Typical / low
2.4°C / 1.8°C · much of the night
In cloud
7% 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.
Excellent conditions for exposed scrambling. The rock should be mostly dry, though drainage lines and shaded holds may still be damp. Cloud on the tops may make route-finding and retreat harder. The rock around the summit is mostly schist, a flaky, mica-rich rock that splits into layers. It has only fair grip when dry and is slippery when wet, as the mica gives it a greasy sheen. It splits easily along its layers, so flakes and ledges can be loose, and it is often grassy and vegetated. 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
PeliteLochailort Pelite Formation
Origin
Metamorphic
Broad rock-response group
Psammite, pelite or semipelite
Mapping
BGS Geology 50K · 1:50,000
Summit area
Psammite, pelite or semipelite in 94% of 17 BGS samples within 350 m
Schist is a flaky, mica-rich rock that splits into layers. It has only fair grip when dry and is slippery when wet, as the mica gives it a greasy sheen. It splits easily along its layers, so flakes and ledges can be loose, and it is often grassy and vegetated. 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.
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.
Schist is a flaky, mica-rich rock that splits into layers. It has only fair grip when dry and is slippery when wet, as the mica gives it a greasy sheen. It splits easily along its layers, so flakes and ledges can be loose, and it is often grassy and vegetated.
BGS record →
Summit-area sample
Psammite and peliteBeinn An Tuim Striped Formation
Psammite banded with schist is a hard, sandy rock with flakier, mica-rich layers. It grips well on the harder bands when dry and is slippery on the mica-rich layers when wet. The flaky layers split easily, so some flakes and ledges are loose.
BGS record →
Summit-area sample
Foliated microdioriteArgyll And Northern Highlands Granitic Suite
Diorite is a hard, crystalline rock. It grips well when dry and is fair when wet. It is generally solid, though cracked into blocks along its joints.
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 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 2026-11-06. All times are UK local time.
A noticeable aurora display is unlikely; any glow may be faint or camera-only
A noticeable aurora display is unlikely here. Any glow may be faint or camera-only. Activity peaks around Kp 3.0 (on a 0 to 9 scale).
Activity can change at short notice. Check again on the night.
Stargazing
Poor sky conditions during the best available spell: 7 Nov, 04:00 GMT to 05:00 GMT.
Mostly cloudy, so little chance of seeing the stars. Hazy, which dims the fainter stars.
Moon-free dark sky: 6 Nov, 18:40 GMT to 7 Nov, 05:35 GMT.
Sky conditions through the night
Fully dark periods. Conditions can change between forecast hours.
Time
Viewing conditions
6 Nov, 18:40 GMT to 19:00 GMT
Poor sky conditions
Mostly cloudy, so little chance of seeing the stars.
6 Nov, 19:00 GMT to 20:00 GMT
Poor sky conditions
Mostly cloudy, so little chance of seeing the stars.
6 Nov, 20:00 GMT to 21:00 GMT
Poor sky conditions
Mostly cloudy, so little chance of seeing the stars.
6 Nov, 21:00 GMT to 22:00 GMT
Poor sky conditions
Mostly cloudy, so little chance of seeing the stars.
6 Nov, 22:00 GMT to 23:00 GMT
Poor sky conditions
Mostly cloudy, so little chance of seeing the stars. Hazy, which dims the fainter stars.
6 Nov, 23:00 GMT to 7 Nov, 00:00 GMT
Poor sky conditions
Mostly cloudy, so little chance of seeing the stars. Hazy, which dims the fainter stars.
7 Nov, 00:00 GMT to 01:00 GMT
Poor sky conditions
Mostly cloudy, so little chance of seeing the stars. Hazy, which dims the fainter stars.
7 Nov, 01:00 GMT to 02:00 GMT
Poor sky conditions
Mostly cloudy, so little chance of seeing the stars. Hazy, which dims the fainter stars.
7 Nov, 02:00 GMT to 03:00 GMT
Poor sky conditions
Mostly cloudy, so little chance of seeing the stars. Hazy, which dims the fainter stars.
7 Nov, 03:00 GMT to 04:00 GMT
Poor sky conditions
Mostly cloudy, so little chance of seeing the stars. Hazy, which dims the fainter stars.
7 Nov, 04:00 GMT to 05:00 GMT
Poor sky conditions
Mostly cloudy, so little chance of seeing the stars. Hazy, which dims the fainter stars.
7 Nov, 05:00 GMT to 05:35 GMT
Poor sky conditions
Mostly cloudy, so little chance of seeing the stars. Hazy, which dims the fainter stars.
Moon, darkness and meteor showers
Near-new moon, about 5% illuminated.
Moonrise around 7 Nov, 05:55 GMT.
Full darkness: 6 Nov, 18:40 GMT to 7 Nov, 05:35 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.
Orionids 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.
Orionids: peak around 21 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 193 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.
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.
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 Streap on Friday 6 November 2026. It asks about intentions, not whether you actually went out. No name or account is needed.
Summit wind · 08:00-17:005-15 mph southeasterlySummit gusts · 08:00-17:0010-20 mphFeels like-4 to 0°CPrecipitationLittle or noneCloud-free summit estimate75%Cloud base through day900-1,200 mFreezing levelAbove summitDaylightSunrise 07:44 · Sunset 16:25 · 8.7 hours daylight
The day on the hill
A good day on Streap: dry, with light winds and clear tops for most of the day.
Wind
On the summit expect light winds of up to 15 mph, mainly south-easterly, with gusts of 10–20 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. A few forecast models bring the cloud base down to around 600–900 m at times. The cloud base sits close to summit height, so the top could go in and out of cloud at short notice. Mist or fog is possible in the valleys early on, clearing by about 10am. It looks hazy, so views may be limited even when the tops are clear.
Rain and ground
It should stay dry.
Warmth and kit
On the tops it will be around 0 to 4°C, feeling like -4 to 0°C in the wind. The freezing level is above the summits. Take a hat, gloves, a windproof and a spare warm layer.
Daylight
A short day, with only about 9 hours of daylight. Sunset is around 4:25pm, 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 4.3 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.
Morning · 08:00–12:00
MixedSummit winds around 5-15 mph. Gusts around 5-15 mph are possible on exposed ground.
68
Afternoon · 12:00–17:00
GoodSummit winds around 5-15 mph. Gusts around 10-20 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 damp air: dry, with light winds.54Mixed · 600 mView detailsHide details
Night beginning Saturday 7 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 10 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 cold night, down to about 1°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.
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.
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 schist, a flaky, mica-rich rock that splits into layers. It has only fair grip when dry and is slippery when wet, as the mica gives it a greasy sheen. It splits easily along its layers, so flakes and ledges can be loose, and it is often grassy and vegetated. 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
PeliteLochailort Pelite Formation
Origin
Metamorphic
Broad rock-response group
Psammite, pelite or semipelite
Mapping
BGS Geology 50K · 1:50,000
Summit area
Psammite, pelite or semipelite in 94% of 17 BGS samples within 350 m
Schist is a flaky, mica-rich rock that splits into layers. It has only fair grip when dry and is slippery when wet, as the mica gives it a greasy sheen. It splits easily along its layers, so flakes and ledges can be loose, and it is often grassy and vegetated. 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.
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.
Schist is a flaky, mica-rich rock that splits into layers. It has only fair grip when dry and is slippery when wet, as the mica gives it a greasy sheen. It splits easily along its layers, so flakes and ledges can be loose, and it is often grassy and vegetated.
BGS record →
Summit-area sample
Psammite and peliteBeinn An Tuim Striped Formation
Psammite banded with schist is a hard, sandy rock with flakier, mica-rich layers. It grips well on the harder bands when dry and is slippery on the mica-rich layers when wet. The flaky layers split easily, so some flakes and ledges are loose.
BGS record →
Summit-area sample
Foliated microdioriteArgyll And Northern Highlands Granitic Suite
Diorite is a hard, crystalline rock. It grips well when dry and is fair when wet. It is generally solid, though cracked into blocks along its joints.
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 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 2026-11-07. All times are UK local time.
Stargazing
Poor sky conditions during the best available spell: 7 Nov, 20:00 GMT to 21:00 GMT.
Mostly cloudy, so little chance of seeing the stars. Hazy, which dims the fainter stars.
Moon-free dark sky: 7 Nov, 18:35 GMT to 8 Nov, 05:35 GMT.
Sky conditions through the night
Fully dark periods. Conditions can change between forecast hours.
Time
Viewing conditions
7 Nov, 18:35 GMT to 19:00 GMT
Poor sky conditions
Mostly cloudy, so little chance of seeing the stars. Hazy, which dims the fainter stars.
7 Nov, 19:00 GMT to 20:00 GMT
Poor sky conditions
Mostly cloudy, so little chance of seeing the stars. Hazy, which dims the fainter stars.
7 Nov, 20:00 GMT to 21:00 GMT
Poor sky conditions
Mostly cloudy, so little chance of seeing the stars. Hazy, which dims the fainter stars.
7 Nov, 21:00 GMT to 22:00 GMT
Poor sky conditions
Mostly cloudy, so little chance of seeing the stars. Hazy, which dims the fainter stars.
7 Nov, 22:00 GMT to 23:00 GMT
Poor sky conditions
Mostly cloudy, so little chance of seeing the stars. Hazy, which dims the fainter stars.
7 Nov, 23:00 GMT to 8 Nov, 00:00 GMT
Poor sky conditions
Mostly cloudy, so little chance of seeing the stars. Hazy, which dims the fainter stars.
8 Nov, 00:00 GMT to 01:00 GMT
Poor sky conditions
Mostly cloudy, so little chance of seeing the stars. Hazy, which dims the fainter stars.
8 Nov, 01:00 GMT to 02:00 GMT
Poor sky conditions
Mostly cloudy, so little chance of seeing the stars. Hazy, which dims the fainter stars.
8 Nov, 02:00 GMT to 03:00 GMT
Poor sky conditions
Mostly cloudy, so little chance of seeing the stars. Hazy, which dims the fainter stars.
8 Nov, 03:00 GMT to 04:00 GMT
Poor sky conditions
Mostly cloudy, so little chance of seeing the stars.
8 Nov, 04:00 GMT to 05:00 GMT
Poor sky conditions
Mostly cloudy, so little chance of seeing the stars. Hazy, which dims the fainter stars.
8 Nov, 05:00 GMT to 05:35 GMT
Poor sky conditions
Mostly cloudy, so little chance of seeing the stars. Hazy, which dims the fainter stars.
Moon, darkness and meteor showers
Near-new moon, about 2% illuminated.
Moonrise around 8 Nov, 07:25 GMT.
Full darkness: 7 Nov, 18:35 GMT to 8 Nov, 05:35 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.
Orionids 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.
Orionids: peak around 21 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 193 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.
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.
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 Streap on Saturday 7 November 2026. It asks about intentions, not whether you actually went out. No name or account is needed.
Summit wind · 08:00-17:000-10 mph northwesterlySummit gusts · 08:00-17:005-15 mphFeels like-4 to 0°CPrecipitationLittle or noneCloud-free summit estimate90%Cloud base through day900-2,000 mFreezing level800-1,100 mDaylightSunrise 07:46 · Sunset 16:23 · 8.6 hours daylight
The day on the hill
A fine day on Streap: dry, with light winds and clear tops for most of the day.
Wind
On the summit expect light winds of up to 10 mph, mainly north-westerly, 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 are likely to stay mostly clear of cloud, though brief patches cannot be ruled out.
Rain and ground
It should stay dry.
Warmth and kit
On the tops it will be around 0 to 4°C, feeling like -4 to 0°C in the wind. The freezing level is close to summit height. Take a hat, gloves, a windproof and a spare warm layer.
Daylight
A short day, with only about 9 hours of daylight. Sunset is around 4:25pm, 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 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 2.3 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.
Morning · 08:00–12:00
ExcellentSummit winds around 0-10 mph. Gusts around 0-10 mph are possible on exposed ground.
93
Afternoon · 12:00–17:00
ExcellentSummit winds around 0-10 mph. Gusts around 5-15 mph are possible on exposed ground.
93
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 0°C.59Mixed · 600 mView detailsHide details
Night beginning Sunday 8 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 11 mph. It should stay dry. A frost up around 900 m, down to about 0°C. 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.
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.
Excellent 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 schist, a flaky, mica-rich rock that splits into layers. It has only fair grip when dry and is slippery when wet, as the mica gives it a greasy sheen. It splits easily along its layers, so flakes and ledges can be loose, and it is often grassy and vegetated. 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
PeliteLochailort Pelite Formation
Origin
Metamorphic
Broad rock-response group
Psammite, pelite or semipelite
Mapping
BGS Geology 50K · 1:50,000
Summit area
Psammite, pelite or semipelite in 94% of 17 BGS samples within 350 m
Schist is a flaky, mica-rich rock that splits into layers. It has only fair grip when dry and is slippery when wet, as the mica gives it a greasy sheen. It splits easily along its layers, so flakes and ledges can be loose, and it is often grassy and vegetated. 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.
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.
Schist is a flaky, mica-rich rock that splits into layers. It has only fair grip when dry and is slippery when wet, as the mica gives it a greasy sheen. It splits easily along its layers, so flakes and ledges can be loose, and it is often grassy and vegetated.
BGS record →
Summit-area sample
Psammite and peliteBeinn An Tuim Striped Formation
Psammite banded with schist is a hard, sandy rock with flakier, mica-rich layers. It grips well on the harder bands when dry and is slippery on the mica-rich layers when wet. The flaky layers split easily, so some flakes and ledges are loose.
BGS record →
Summit-area sample
Foliated microdioriteArgyll And Northern Highlands Granitic Suite
Diorite is a hard, crystalline rock. It grips well when dry and is fair when wet. It is generally solid, though cracked into blocks along its joints.
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 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 2026-11-08. All times are UK local time.
Aurora outlook
Nothing notable expected.
A broad activity outlook, not a forecast of a visible display. Cloud and activity can change before the night.
Stargazing
Poor sky conditions during the best available spell: 9 Nov, 00:00 GMT to 01:00 GMT.
Mostly cloudy, so little chance of seeing the stars. Hazy, which dims the fainter stars.
Moon-free dark sky: 8 Nov, 18:35 GMT to 9 Nov, 05:35 GMT.
Sky conditions through the night
Fully dark periods. Conditions can change between forecast hours.
Time
Viewing conditions
8 Nov, 18:35 GMT to 19:00 GMT
Poor sky conditions
Mostly cloudy, so little chance of seeing the stars. Hazy, which dims the fainter stars.
8 Nov, 19:00 GMT to 20:00 GMT
Poor sky conditions
Mostly cloudy, so little chance of seeing the stars. Hazy, which dims the fainter stars.
8 Nov, 20:00 GMT to 21:00 GMT
Poor sky conditions
Mostly cloudy, so little chance of seeing the stars. Hazy, which dims the fainter stars.
8 Nov, 21:00 GMT to 22:00 GMT
Poor sky conditions
Mostly cloudy, so little chance of seeing the stars. Hazy, which dims the fainter stars.
8 Nov, 22:00 GMT to 23:00 GMT
Poor sky conditions
Mostly cloudy, so little chance of seeing the stars. Hazy, which dims the fainter stars.
8 Nov, 23:00 GMT to 9 Nov, 00:00 GMT
Poor sky conditions
Mostly cloudy, so little chance of seeing the stars. Hazy, which dims the fainter stars.
9 Nov, 00:00 GMT to 01:00 GMT
Poor sky conditions
Mostly cloudy, so little chance of seeing the stars. Hazy, which dims the fainter stars.
9 Nov, 01:00 GMT to 02:00 GMT
Poor sky conditions
Mostly cloudy, so little chance of seeing the stars. Hazy, which dims the fainter stars.
9 Nov, 02:00 GMT to 03:00 GMT
Poor sky conditions
Mostly cloudy, so little chance of seeing the stars. Hazy, which dims the fainter stars.
9 Nov, 03:00 GMT to 04:00 GMT
Poor sky conditions
Mostly cloudy, so little chance of seeing the stars. Hazy, which dims the fainter stars.
9 Nov, 04:00 GMT to 05:00 GMT
Poor sky conditions
Mostly cloudy, so little chance of seeing the stars. Hazy, which dims the fainter stars.
9 Nov, 05:00 GMT to 05:35 GMT
Poor sky conditions
Mostly cloudy, so little chance of seeing the stars. Hazy, which dims the fainter stars.
Moon, darkness and meteor showers
Near-new moon, about 0% illuminated.
Full darkness: 8 Nov, 18:35 GMT to 9 Nov, 05:35 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.
Orionids: peak around 21 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 193 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.
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.
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 Streap on Sunday 8 November 2026. It asks about intentions, not whether you actually went out. No name or account is needed.
Summit wind · 08:00-17:000-10 mph westerlySummit gusts · 08:00-17:000-10 mphFeels like-4 to 0°CPrecipitationLittle or noneCloud-free summit estimate90%Cloud base through day1,000-1,300 mFreezing level800-1,100 mDaylightSunrise 07:48 · Sunset 16:21 · 8.6 hours daylight
The day on the hill
A fine day on Streap: dry, with light winds and clear tops for most of the day.
Wind
On the summit expect light winds of up to 10 mph, mainly westerly, with gusts of 0–10 mph at the windiest.
Cloud and visibility
The tops are likely to stay mostly clear of cloud, though brief patches cannot be ruled out.
Rain and ground
It should stay dry.
Warmth and kit
On the tops it will be around -2 to 2°C, feeling like -4 to 0°C in the wind. The freezing level is close to summit height. Take a hat, gloves, a windproof and a spare warm layer.
Daylight
A short day, with only about 9 hours of daylight. Sunset is around 4:20pm, 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 5.8 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.
Morning · 08:00–12:00
ExcellentSummit winds around 0-10 mph. Gusts around 0-10 mph are possible on exposed ground.
94
Afternoon · 12:00–17:00
ExcellentSummit winds around 0-10 mph. Gusts around 0-10 mph are possible on exposed ground.
93
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 mView detailsHide details
Night beginning Monday 9 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 15 mph. It should stay dry. 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 frost up around 900 m, down to about 0°C. 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.
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.
Good conditions for exposed scrambling. It should stay mostly dry, but a passing shower could leave the rock damp and slippery. The rock around the summit is mostly schist, a flaky, mica-rich rock that splits into layers. It has only fair grip when dry and is slippery when wet, as the mica gives it a greasy sheen. It splits easily along its layers, so flakes and ledges can be loose, and it is often grassy and vegetated. 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 gust0-10 mphRainPossible · 25%
Main concernrain possible despite mostly dry conditions being favoured
Representative rock around the summit
PeliteLochailort Pelite Formation
Origin
Metamorphic
Broad rock-response group
Psammite, pelite or semipelite
Mapping
BGS Geology 50K · 1:50,000
Summit area
Psammite, pelite or semipelite in 94% of 17 BGS samples within 350 m
Schist is a flaky, mica-rich rock that splits into layers. It has only fair grip when dry and is slippery when wet, as the mica gives it a greasy sheen. It splits easily along its layers, so flakes and ledges can be loose, and it is often grassy and vegetated. 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.
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.
Schist is a flaky, mica-rich rock that splits into layers. It has only fair grip when dry and is slippery when wet, as the mica gives it a greasy sheen. It splits easily along its layers, so flakes and ledges can be loose, and it is often grassy and vegetated.
BGS record →
Summit-area sample
Psammite and peliteBeinn An Tuim Striped Formation
Psammite banded with schist is a hard, sandy rock with flakier, mica-rich layers. It grips well on the harder bands when dry and is slippery on the mica-rich layers when wet. The flaky layers split easily, so some flakes and ledges are loose.
BGS record →
Summit-area sample
Foliated microdioriteArgyll And Northern Highlands Granitic Suite
Diorite is a hard, crystalline rock. It grips well when dry and is fair when wet. It is generally solid, though cracked into blocks along its joints.
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 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 2026-11-09. All times are UK local time.
Aurora outlook
Slightly raised activity, probably not enough to reach this far.
A broad activity outlook, not a forecast of a visible display. Cloud and activity can change before the night.
Stargazing
Poor sky conditions during the best available spell: 9 Nov, 19:00 GMT to 20:00 GMT.
Mostly cloudy, so little chance of seeing the stars. Hazy, which dims the fainter stars.
Moon-free dark sky: 9 Nov, 18:35 GMT to 10 Nov, 05:40 GMT.
Sky conditions through the night
Fully dark periods. Conditions can change between forecast hours.
Time
Viewing conditions
9 Nov, 18:35 GMT to 19:00 GMT
Poor sky conditions
Mostly cloudy, so little chance of seeing the stars. Hazy, which dims the fainter stars.
9 Nov, 19:00 GMT to 20:00 GMT
Poor sky conditions
Mostly cloudy, so little chance of seeing the stars. Hazy, which dims the fainter stars.
9 Nov, 20:00 GMT to 21:00 GMT
Poor sky conditions
Mostly cloudy, so little chance of seeing the stars. Hazy, which dims the fainter stars.
9 Nov, 21:00 GMT to 22:00 GMT
Poor sky conditions
Mostly cloudy, so little chance of seeing the stars. Hazy, which dims the fainter stars.
9 Nov, 22:00 GMT to 23:00 GMT
Poor sky conditions
Mostly cloudy, so little chance of seeing the stars. Hazy, which dims the fainter stars.
9 Nov, 23:00 GMT to 10 Nov, 00:00 GMT
Poor sky conditions
Mostly cloudy, so little chance of seeing the stars. Hazy, which dims the fainter stars.
10 Nov, 00:00 GMT to 01:00 GMT
Poor sky conditions
Mostly cloudy, so little chance of seeing the stars. Rain at times. Hazy, which dims the fainter stars.
10 Nov, 01:00 GMT to 02:00 GMT
Poor sky conditions
Mostly cloudy, so little chance of seeing the stars. Rain at times. Hazy, which dims the fainter stars.
10 Nov, 02:00 GMT to 03:00 GMT
Poor sky conditions
Mostly cloudy, so little chance of seeing the stars. Rain at times. Hazy, which dims the fainter stars.
10 Nov, 03:00 GMT to 04:00 GMT
Poor sky conditions
Mostly cloudy, so little chance of seeing the stars. Rain at times. Hazy, which dims the fainter stars.
10 Nov, 04:00 GMT to 05:00 GMT
Poor sky conditions
Mostly cloudy, so little chance of seeing the stars. Rain at times. Hazy, which dims the fainter stars.
10 Nov, 05:00 GMT to 05:40 GMT
Poor 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
Near-new moon, about 1% illuminated.
Full darkness: 9 Nov, 18:35 GMT to 10 Nov, 05:40 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.
Orionids: peak around 21 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 193 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.
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.
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 Streap on Monday 9 November 2026. It asks about intentions, not whether you actually went out. No name or account is needed.
Summit wind · 08:00-17:005-15 mph southerlySummit gusts · 08:00-17:0015-25 mphFeels like-8 to -4°CPrecipitationLittle or noneCloud-free summit estimate45%Cloud base through day800-1,100 mFreezing level700-1,000 mDaylightSunrise 07:50 · Sunset 16:19 · 8.5 hours daylight
The day on the hill
A good day on Streap, though expect cloud on the tops early.
Wind
On the summit expect light winds of up to 15 mph, mainly southerly, with gusts of 15–25 mph at the windiest. The wind turns southerly around midday. Lower down on the open hillside the wind will be light, under 10 mph.
Cloud and visibility
Cloud on the tops early should lift off them by midday. The cloud base could be as low as 600–900 m mid-morning. A few forecast models bring it lower still, to around 400–700 m. Mist or fog is possible in the valleys early on, clearing by about 5am. It looks hazy, so views may be limited even when the tops are clear.
Rain and ground
It should stay dry.
Warmth and kit
On the tops it will be around -2 to 2°C, feeling like -8 to -4°C in the wind. The freezing level is close to summit height. 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 4:20pm, 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.
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.
Morning · 08:00–12:00
MixedSummit winds around 5-15 mph. Gusts around 10-20 mph are possible on exposed ground.
64
Afternoon · 12:00–17:00
ExcellentSummit winds around 5-15 mph. Gusts around 15-25 mph are possible on exposed ground. Summit cloud is more persistent early in this period, with better prospects later.
85
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: dry, with light winds.59Mixed · 600 mView detailsHide details
Night beginning Tuesday 10 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 20 mph. It should stay dry. A cold night, down to about 1°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.
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.
Good conditions for exposed scrambling. The rock should be mostly dry, though drainage lines and shaded holds may still be damp. Cloud on the tops may make route-finding and retreat harder. The rock around the summit is mostly schist, a flaky, mica-rich rock that splits into layers. It has only fair grip when dry and is slippery when wet, as the mica gives it a greasy sheen. It splits easily along its layers, so flakes and ledges can be loose, and it is often grassy and vegetated. 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 gust15-25 mphRain0.0 mm
Representative rock around the summit
PeliteLochailort Pelite Formation
Origin
Metamorphic
Broad rock-response group
Psammite, pelite or semipelite
Mapping
BGS Geology 50K · 1:50,000
Summit area
Psammite, pelite or semipelite in 94% of 17 BGS samples within 350 m
Schist is a flaky, mica-rich rock that splits into layers. It has only fair grip when dry and is slippery when wet, as the mica gives it a greasy sheen. It splits easily along its layers, so flakes and ledges can be loose, and it is often grassy and vegetated. 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.
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.
Schist is a flaky, mica-rich rock that splits into layers. It has only fair grip when dry and is slippery when wet, as the mica gives it a greasy sheen. It splits easily along its layers, so flakes and ledges can be loose, and it is often grassy and vegetated.
BGS record →
Summit-area sample
Psammite and peliteBeinn An Tuim Striped Formation
Psammite banded with schist is a hard, sandy rock with flakier, mica-rich layers. It grips well on the harder bands when dry and is slippery on the mica-rich layers when wet. The flaky layers split easily, so some flakes and ledges are loose.
BGS record →
Summit-area sample
Foliated microdioriteArgyll And Northern Highlands Granitic Suite
Diorite is a hard, crystalline rock. It grips well when dry and is fair when wet. It is generally solid, though cracked into blocks along its joints.
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 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 2026-11-10. All times are UK local time.
Aurora outlook
Nothing notable expected.
A broad activity outlook, not a forecast of a visible display. Cloud and activity can change before the night.
Stargazing
Poor sky conditions during the best available spell: 10 Nov, 19:00 GMT to 20:00 GMT.
Mostly cloudy, so little chance of seeing the stars. Hazy, which dims the fainter stars.
Moon-free dark sky: 10 Nov, 18:30 GMT to 11 Nov, 05:40 GMT.
Sky conditions through the night
Fully dark periods. Conditions can change between forecast hours.
Time
Viewing conditions
10 Nov, 18:30 GMT to 19:00 GMT
Poor sky conditions
Mostly cloudy, so little chance of seeing the stars. Hazy, which dims the fainter stars.
Limited model coverage.
10 Nov, 19:00 GMT to 20:00 GMT
Poor sky conditions
Mostly cloudy, so little chance of seeing the stars. Hazy, which dims the fainter stars.
Limited model coverage.
10 Nov, 20:00 GMT to 21:00 GMT
Poor sky conditions
Mostly cloudy, so little chance of seeing the stars. Hazy, which dims the fainter stars.
Limited model coverage.
10 Nov, 21:00 GMT to 22:00 GMT
Poor sky conditions
Mostly cloudy, so little chance of seeing the stars. Hazy, which dims the fainter stars.
Limited model coverage.
10 Nov, 22:00 GMT to 23:00 GMT
Poor sky conditions
Mostly cloudy, so little chance of seeing the stars. Hazy, which dims the fainter stars.
Limited model coverage.
10 Nov, 23:00 GMT to 11 Nov, 00:00 GMT
Poor sky conditions
Mostly cloudy, so little chance of seeing the stars. Hazy, which dims the fainter stars.
Limited model coverage.
11 Nov, 00:00 GMT to 01:00 GMT
Poor sky conditions
Mostly cloudy, so little chance of seeing the stars. Hazy, which dims the fainter stars.
Limited model coverage.
11 Nov, 01:00 GMT to 02:00 GMT
Poor sky conditions
Mostly cloudy, so little chance of seeing the stars.
Limited model coverage.
11 Nov, 02:00 GMT to 03:00 GMT
Poor sky conditions
Mostly cloudy, so little chance of seeing the stars.
Limited model coverage.
11 Nov, 03:00 GMT to 04:00 GMT
Poor sky conditions
Mostly cloudy, so little chance of seeing the stars.
Limited model coverage.
11 Nov, 04:00 GMT to 05:00 GMT
Poor sky conditions
Mostly cloudy, so little chance of seeing the stars.
Limited model coverage.
11 Nov, 05:00 GMT to 05:40 GMT
Poor sky conditions
Mostly cloudy, so little chance of seeing the stars.
Limited model coverage.
Moon, darkness and meteor showers
Near-new moon, about 3% illuminated.
Full darkness: 10 Nov, 18:30 GMT to 11 Nov, 05:40 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.
Orionids: peak around 21 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 193 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.
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.
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 Streap on Tuesday 10 November 2026. It asks about intentions, not whether you actually went out. No name or account is needed.
A fine day on Streap: dry and breezy, with clear tops for most of the day.
Wind
On the summit expect a north-easterly wind of around 5–15 mph first thing, rising to 20–30 mph by mid-afternoon, with gusts of 25–35 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 stay mostly clear of cloud, though brief patches cannot be ruled out. The air should be clear, so expect far-reaching views as long as the tops stay clear.
Rain and ground
It should stay dry.
Warmth and kit
On the tops it will be around -2 to 2°C, feeling like -8 to -4°C in the wind. The freezing level is close to summit height. 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 4:15pm, 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.
Morning · 08:00–12:00
ExcellentSummit winds around 5-15 mph. Gusts around 10-20 mph are possible on exposed ground.
99
Afternoon · 12:00–17:00
GoodWinds strengthen compared with the morning. Summit winds around 10-20 mph in the early afternoon, strengthening to 20-30 mph later. Gusts around 25-35 mph are possible on exposed ground.
76
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 -4°C.39Poor · 600 mView detailsHide details
Night beginning Wednesday 11 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 northeast. It should stay dry. A frost at every height we checked (300-900 m), down to about -4°C. A 4-season bag rated to about -6°C comfort, and a warm mat, should do. Allow more if you sleep cold.
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.
Did this match your night?Share a quick observation to help improve this beta forecast.Give feedback →
Daytime · exposed rockClimbing & scramblingBetaFair conditions for exposed scrambling: gusts of 25–35 mph.Mixed67View 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. Gusts of 25–35 mph could throw you off balance on exposed moves and ridges. The rock around the summit is mostly schist, a flaky, mica-rich rock that splits into layers. It has only fair grip when dry and is slippery when wet, as the mica gives it a greasy sheen. It splits easily along its layers, so flakes and ledges can be loose, and it is often grassy and vegetated. 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 gust25-35 mphRain0.0 mm
Main concerngusts of 25–35 mph
Representative rock around the summit
PeliteLochailort Pelite Formation
Origin
Metamorphic
Broad rock-response group
Psammite, pelite or semipelite
Mapping
BGS Geology 50K · 1:50,000
Summit area
Psammite, pelite or semipelite in 94% of 17 BGS samples within 350 m
Schist is a flaky, mica-rich rock that splits into layers. It has only fair grip when dry and is slippery when wet, as the mica gives it a greasy sheen. It splits easily along its layers, so flakes and ledges can be loose, and it is often grassy and vegetated. 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.
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.
Schist is a flaky, mica-rich rock that splits into layers. It has only fair grip when dry and is slippery when wet, as the mica gives it a greasy sheen. It splits easily along its layers, so flakes and ledges can be loose, and it is often grassy and vegetated.
BGS record →
Summit-area sample
Psammite and peliteBeinn An Tuim Striped Formation
Psammite banded with schist is a hard, sandy rock with flakier, mica-rich layers. It grips well on the harder bands when dry and is slippery on the mica-rich layers when wet. The flaky layers split easily, so some flakes and ledges are loose.
BGS record →
Summit-area sample
Foliated microdioriteArgyll And Northern Highlands Granitic Suite
Diorite is a hard, crystalline rock. It grips well when dry and is fair when wet. It is generally solid, though cracked into blocks along its joints.
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 Streap on Wednesday 11 November 2026. It asks about intentions, not whether you actually went out. No name or account is needed.
