Select a day to replace the detailed forecast below. 8 forecast days are available here.
Confidence: Medium
Overall hill weather26/100Poor
Wind20-35 mph westerlyGusts35-45 mphFeels like0 to 4°CPrecipitationUp to around 2 mmCloud-free summit estimate5%Cloud base through day600-900 mFreezing levelAbove summitDaylightSunrise 06:59 · Sunset 19:19 · 12.3 hours daylight
The day on the hill
Frequent summit cloud on An Stùc: summit wind broadly 20-35 mph, with gusts 35-45 mph at times (strong winds).
Wind & exposure
Much calmer lower down - generally 5-15 mph in the valley, rising towards the tops.
Cloud & views
Cloud base mostly around 600–900 m through daylight. Cloud is likely to cover the top for most or all of daylight, with no dependable break.
Cloud may hang lower on western slopes and lift somewhat on the eastern side, but local terrain can differ. Very little direct sunshine is likely, with extensive cloud.
Drizzle is forecast for much of the day. The forecast total is up to around 2 mm, but local amounts will vary.
Forecast models differ on summit wind strength: around 18-37 mph at walker height, with gusts 25-53 mph. Exposed tops may feel chilly in the wind.
A windproof layer will help, with an extra warm layer for stops. If clothing gets wet, you can cool more quickly.
Keep a dry warm layer protected. Buffeting may affect balance on exposed ground, particularly near ridges and edges.
Forecast confidence
Summit wind could be roughly 18-37 mph, which changes how difficult exposed walking may feel.
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
PoorSummit winds around 20-30 mph. Gusts around 35-45 mph are possible on exposed ground. Buffeting may affect balance on exposed ground, particularly near ridges and edges. Rain is forecast during this period.
30/100
Afternoon · 12:00–17:00
PoorSummit winds around 20-30 mph. Gusts around 35-45 mph are possible on exposed ground. Buffeting may affect balance on exposed ground, particularly near ridges and edges. Rain is forecast during this period.
21/100
Compare an early start with later conditions. The main forecast above covers the day in more detail.
Overnight · 17:00–08:00Wild campingBetaExposed camping is not recommended near 900 m: gusts may reach about 45 mph. Sustained winds may reach about 35 mph at times. Lower sheltered ground may be less exposed, but this forecast does not confirm a suitable pitch or a safe approach. Check its overnight conditions separately.39/100Poor · 600 mView detailsHide details
Night beginning Monday 21 September 2026
Full overnight outlook
Exposed camping is not recommended near 900 m: gusts may reach about 45 mph. Sustained winds may reach about 35 mph at times. Lower sheltered ground may be less exposed, but this forecast does not confirm a suitable pitch or a safe approach. Check its overnight conditions separately. Open-hillside camping looks poor overall around 600 m (39/100). Peak gusts range from about 35 mph at 300 m to 45 mph at 900 m. A little rain may coincide with pitching or packing up. Pitches near 900 m may spend part of the night in cloud, bringing damp conditions and poor visibility while cloud is present. Condensation risk is high near 300, 600 and 900 m. Ventilation will matter. The coldest temperature falls from about 11.2°C at 300 m to 9.5°C at 900 m.
Extensive cloud may limit moonlight. Illumination describes the sunlit part of the Moon, not brightness at your pitch.
Overnight window: 21 Sep, 17:00 BST to 22 Sep, 08:00 BST. Approximate open-horizon times; hills can hide the Moon. Still take a headtorch.
Elevation reference (open ground)
300 m59/100 · mixed
Wind / gust
20 mph / 33 mph
Typical / low
12.7°C / 11.2°C
In cloud
0% of modelled night
Condensation
High
600 m39/100 · poor
Wind / gust
24 mph / 40 mph
Typical / low
12.7°C / 11.2°C
In cloud
0% of modelled night
Condensation
High
900 m19/100 · very poor
Wind / gust
28 mph / 47 mph
Typical / low
10.9°C / 9.5°C · several hours
In cloud
100% of modelled night
Condensation
High
Warmth planning: As a broad starting point, consider a 2-season bag with an ISO/EN comfort rating at or below about 8°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.
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Daytime · exposed rockClimbing & scramblingBetaWet rock is likely. Gusts near 40 mph may affect balance on exposed rock.Poor0/100View detailsHide details
Generic exposed-rock guidance
Full climbing & scrambling outlook
Conditions for exposed scrambling look very poor (0/100). Rain during the climbing period is likely to leave rock wet and more slippery. The mapped summit rock is Calcareous pelite (Ben Lawers Schist Formation). Dry quartz-rich bands can be grippy, while mica-rich or foliated sections, lichen and vegetation may become slippery when wet. Gusts may reach about 40 mph. Crosswinds can make exposed ridges substantially more serious. Cloud may also make route-finding and retreat harder.
Rock surfaceWet rock likelyPeak gust41 mphRain1.0 mm
Main factorsgusts around 40 mphwet rock likelymuch of the route may be in cloud
Mapped rock across the summit and available routes
Calcareous peliteBen Lawers Schist Formation
Dry quartz-rich bands can be grippy, while mica-rich or foliated sections, lichen and vegetation may become slippery when wet. Summit-point mapping plus representative BGS bedrock samples along available GPX routes. These are not continuous geological surveys; contacts, superficial deposits and the exposed rock on individual holds may differ.
Rock groups along the sampled routes
These are mapped rock groups, not separate weather forecasts or a ranking of route safety.
Meall Greigh, An Stùc and Meall Garbh (Ben Lawers)
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.
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 An Stùc on Monday 21 September 2026. It asks about intentions, not whether you actually went out. No name or account is needed.
Wind15-30 mph southwesterlyGusts35-45 mphFeels like2 to 6°CPrecipitationAround 5-10 mmCloud-free summit estimate5%Cloud base through day600-900 mFreezing levelAbove summitDaylightSunrise 07:01 · Sunset 19:17 · 12.3 hours daylight
The day on the hill
A wet day with extensive summit cloud on An Stùc: summit wind broadly 15-30 mph, with gusts 35-45 mph at times (strong winds).
Wind & exposure
Much calmer lower down - generally 5-15 mph in the valley, rising towards the tops.
Cloud & views
Cloud base mostly around 600–900 m through daylight. Cloud is likely to cover the top for most or all of daylight, with no dependable break.
Cloud may hang lower on southwestern slopes and lift somewhat on the northeastern side, but local terrain can differ. Very little direct sunshine is likely, with extensive cloud.
Drizzle is forecast for much of the day. The forecast total is around 5-10 mm, but local amounts will vary.
Forecast models differ on summit wind strength: around 18-38 mph at walker height, with gusts 26-53 mph. Exposed tops may feel chilly in the wind.
A windproof layer will help, with an extra warm layer for stops. If clothing gets wet, you can cool more quickly.
Keep a dry warm layer protected. Buffeting may affect balance on exposed ground, particularly near ridges and edges.
Forecast confidence
Forecast models differ on whether meaningful rain reaches the hills during the afternoon and evening.
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
PoorSummit winds around 20-30 mph. Gusts around 35-45 mph are possible on exposed ground. Buffeting may affect balance on exposed ground, particularly near ridges and edges. Rain is forecast during this period.
30/100
Afternoon · 12:00–17:00
PoorSummit winds around 20-30 mph. Gusts around 30-40 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.
20/100
Compare an early start with later conditions. The main forecast above covers the day in more detail.
Overnight · 17:00–08:00Wild campingBetaAbout 19 mm is forecast, with rain liable to affect both pitching and packing up.39/100Poor · 600 mView detailsHide details
Night beginning Tuesday 22 September 2026
Full overnight outlook
Open-hillside camping looks poor overall around 600 m (39/100). It may be breezy on open ground, with gusts near 30 mph. Peak gusts range from about 20 mph at 300 m to 30 mph at 900 m. Wind direction may change substantially during the night. Shelter that works at dusk may be less effective later. Roughly 19 mm is forecast overnight, with rain liable to affect both pitching and packing up. Pitches near 900 m may spend part of the night in cloud, bringing damp conditions and poor visibility while cloud is present. Condensation risk is high near 300, 600 and 900 m. Ventilation will matter. The coldest temperature falls from about 6.6°C at 300 m to 4.8°C at 900 m.
Extensive cloud may limit moonlight. Illumination describes the sunlit part of the Moon, not brightness at your pitch.
Overnight window: 22 Sep, 17:00 BST to 23 Sep, 08:00 BST. Approximate open-horizon times; hills can hide the Moon. Still take a headtorch.
Elevation reference (open ground)
300 m39/100 · poor
Wind / gust
11 mph / 20 mph
Typical / low
9.8°C / 6.6°C · much of the night
In cloud
0% of modelled night
Condensation
High
600 m39/100 · poor
Wind / gust
13 mph / 24 mph
Typical / low
9.8°C / 6.6°C · much of the night
In cloud
0% of modelled night
Condensation
High
900 m39/100 · poor
Wind / gust
15 mph / 28 mph
Typical / low
7.8°C / 4.8°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 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.
Did this match your night?Share a quick observation to help improve this beta forecast.Give feedback →
Daytime · exposed rockClimbing & scramblingBetaWet rock is likely. Gusts near 40 mph may affect balance on exposed rock.Poor0/100View detailsHide details
Generic exposed-rock guidance
Full climbing & scrambling outlook
Conditions for exposed scrambling look very poor (0/100). Rain during the climbing period is likely to leave rock wet and more slippery. The mapped summit rock is Calcareous pelite (Ben Lawers Schist Formation). Dry quartz-rich bands can be grippy, while mica-rich or foliated sections, lichen and vegetation may become slippery when wet. Gusts may reach about 40 mph. Crosswinds can make exposed ridges substantially more serious. Cloud may also make route-finding and retreat harder.
Rock surfaceWet rock likelyPeak gust38 mphRain3.7 mm
Main factorsgusts around 40 mphwet rock likelymuch of the route may be in cloud
Mapped rock across the summit and available routes
Calcareous peliteBen Lawers Schist Formation
Dry quartz-rich bands can be grippy, while mica-rich or foliated sections, lichen and vegetation may become slippery when wet. Summit-point mapping plus representative BGS bedrock samples along available GPX routes. These are not continuous geological surveys; contacts, superficial deposits and the exposed rock on individual holds may differ.
Rock groups along the sampled routes
These are mapped rock groups, not separate weather forecasts or a ranking of route safety.
Meall Greigh, An Stùc and Meall Garbh (Ben Lawers)
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.
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 An Stùc on Tuesday 22 September 2026. It asks about intentions, not whether you actually went out. No name or account is needed.
Wind10-25 mph northwesterlyGusts20-30 mphFeels like-4 to 0°CPrecipitationUp to around 2 mmCloud-free summit estimate60%Cloud base through day600-2,100 mFreezing levelAbove summitDaylightSunrise 07:03 · Sunset 19:14 · 12.2 hours daylight
The day on the hill
On An Stùc: summit wind broadly 10-25 mph, with gusts 20-30 mph at times (a moderate breeze).
Cloud & views
Cloud base around 600–900 m in the morning, lifting to 1500–1800 m around midday and 1800–2100 m by late afternoon. The top is likely to drift in and out of cloud, with the best chance of a view from around midday into the evening.
Cloud may hang lower on northwestern slopes and lift somewhat on the southeastern side, but local terrain can differ. Sunny spells are possible away from summit cloud, but may not reach the top while it is in cloud.
Drizzle is forecast at times. The forecast total is up to around 2 mm, but local amounts will vary.
Cold on exposed tops: air temperature broadly 2 to 6°C, feeling around -4 to 0°C in the wind.
Rain & temperature
The ground is likely to be wet after recent rain.
Forecast confidence
Cloud height remains uncertain, especially where it is close to summit level. Keep windproof and warm layers readily available.
Cloud-free timing: Around 5% early, improving to around 95% later.
Sunshine context Model-grid estimate, not summit sunshine
The surrounding model grid indicates 6.7 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.
Morning · 08:00–12:00
MixedSummit winds around 10-20 mph. Gusts around 20-30 mph are possible on exposed ground. Rain is forecast during this period.
62/100
Afternoon · 12:00–17:00
GoodSummit winds around 10-20 mph. Gusts around 20-30 mph are possible on exposed ground. Summit cloud is more persistent early in this period, with better prospects later.
83/100
Compare an early start with later conditions. The main forecast above covers the day in more detail.
Overnight · 17:00–08:00Wild campingBetaLower pitches look more comfortable than exposed ground near 900 m.91/100Excellent · 600 mView detailsHide details
Night beginning Wednesday 23 September 2026
Full overnight outlook
Open-hillside camping looks very good overall around 600 m (91/100). A lower pitch near 300 m looks more comfortable. Conditions are less suitable by 900 m. It may be breezy on open ground, with gusts near 25 mph. Peak gusts range from about 20 mph at 300 m to 25 mph at 900 m. Little overnight rain is forecast. The coldest temperature falls from about 6.5°C at 300 m to 4.7°C at 900 m.
Clear spells may allow a view of the Moon. Illumination describes the sunlit part of the Moon, not brightness at your pitch.
Overnight window: 23 Sep, 17:00 BST to 24 Sep, 08:00 BST. Approximate open-horizon times; hills can hide the Moon. Still take a headtorch.
Elevation reference (open ground)
300 m92/100 · very good
Wind / gust
8 mph / 18 mph
Typical / low
6.9°C / 6.5°C · much of the night
In cloud
0% of modelled night
Condensation
Low
600 m91/100 · very good
Wind / gust
9 mph / 21 mph
Typical / low
6.9°C / 6.5°C · much of the night
In cloud
0% of modelled night
Condensation
Low
900 m59/100 · mixed
Wind / gust
10 mph / 24 mph
Typical / low
5.3°C / 4.7°C · a brief spell
In cloud
0% of modelled night
Condensation
Low
Warmth planning: As a broad starting point, consider a 3-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.
Did this match your night?Share a quick observation to help improve this beta forecast.Give feedback →
Daytime · exposed rockClimbing & scramblingBetaWet rock is likely.Poor23/100View detailsHide details
Generic exposed-rock guidance
Full climbing & scrambling outlook
Conditions for exposed scrambling look poor (23/100). Rain during the climbing period is likely to leave rock wet and more slippery. The mapped summit rock is Calcareous pelite (Ben Lawers Schist Formation). Dry quartz-rich bands can be grippy, while mica-rich or foliated sections, lichen and vegetation may become slippery when wet.
Rock surfaceWet rock likelyPeak gust25 mphRain0.8 mm
Main concernwet rock likely
Mapped rock across the summit and available routes
Calcareous peliteBen Lawers Schist Formation
Dry quartz-rich bands can be grippy, while mica-rich or foliated sections, lichen and vegetation may become slippery when wet. Summit-point mapping plus representative BGS bedrock samples along available GPX routes. These are not continuous geological surveys; contacts, superficial deposits and the exposed rock on individual holds may differ.
Rock groups along the sampled routes
These are mapped rock groups, not separate weather forecasts or a ranking of route safety.
Meall Greigh, An Stùc and Meall Garbh (Ben Lawers)
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.
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 An Stùc on Wednesday 23 September 2026. It asks about intentions, not whether you actually went out. No name or account is needed.
Wind25-40 mph southwesterlyGusts45-55 mphFeels like-6 to -2°CPrecipitationUp to around 2 mmCloud-free summit estimate80%Cloud base through day1,400-2,100 mFreezing level1,000-1,300 mDaylightSunrise 07:05 · Sunset 19:11 · 12.1 hours daylight
The day on the hill
Strong gusts on An Stùc: summit wind broadly 25-40 mph, with gusts 45-55 mph at times (strong winds).
Wind & exposure
Much calmer lower down - generally 5-15 mph in the valley, rising towards the tops. Summit wind strength is uncertain: around 21-45 mph at walker height, with gusts 30-63 mph.
Check again nearer the time. Gusts may knock you off balance on exposed ground, even between spells of lighter wind.
Cloud & views
Cloud base around 1400–1700 m in the morning, lifting to 1500–1800 m around midday and 1800–2100 m by late afternoon. The top is likely to drift in and out of cloud, with the best chance of a view during the morning.
Cloud-height uncertainty could put the summit in or out of cloud. Clear spells may be difficult to time.
Sunny spells are possible away from summit cloud, but may not reach the top while it is in cloud.
Rain & temperature
Little or no rain is forecast. Cold on exposed tops: air temperature broadly 0 to 4°C, feeling around -6 to -2°C in the wind.
Forecast confidence
Cloud height remains uncertain, especially where it is close to summit level. Keep windproof and warm layers readily available.
Summit wind could be roughly 21-45 mph, which changes how difficult exposed walking may feel.
Cloud-free timing: Around 90% early, falling to around 60% later.
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.
Morning · 08:00–12:00
MixedSummit winds around 15-25 mph early in the morning, strengthening to 25-35 mph later. Gusts around 40-50 mph are possible on exposed ground. Buffeting may affect balance on exposed ground, particularly near ridges and edges.
53/100
Afternoon · 12:00–17:00
PoorWinds strengthen compared with the morning. Summit winds around 30-40 mph. Gusts around 45-55 mph are possible on exposed ground. Gusts may knock you off balance on exposed ground, even between spells of lighter wind. Summit cloud is more persistent early in this period, with better prospects later. Rain is possible during the afternoon, but forecast models disagree on whether it will fall.
29/100
Compare an early start with later conditions. The main forecast above covers the day in more detail.
Overnight · 17:00–08:00Wild campingBetaExposed camping is not recommended near 300, 600 and 900 m: gusts may reach about 60 mph. Sustained winds may reach about 45 mph at times. Choose an alternative off the exposed hill. Do not rely on finding shelter after setting out.9/100Poor · 600 mView detailsHide details
Night beginning Thursday 24 September 2026
Full overnight outlook
Exposed camping is not recommended near 300, 600 and 900 m: gusts may reach about 60 mph. Sustained winds may reach about 45 mph at times. Choose an alternative off the exposed hill. Do not rely on finding shelter after setting out. Open-hillside camping looks very poor overall around 600 m (9/100). Peak gusts range from about 40 mph at 300 m to 60 mph at 900 m. Roughly 6.3 mm is forecast overnight, with rain liable to affect both pitching and packing up. Pitches near 600 and 900 m may spend part of the night in cloud, bringing damp conditions and poor visibility while cloud is present. Condensation risk is high near 600 and 900 m. Ventilation will matter. The coldest temperature falls from about 7.6°C at 300 m to 5.4°C at 900 m.
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: 24 Sep, 17:00 BST to 25 Sep, 08:00 BST. Approximate open-horizon times; hills can hide the Moon. Still take a headtorch.
Elevation reference (open ground)
300 m19/100 · very poor
Wind / gust
25 mph / 42 mph
Typical / low
10.2°C / 7.6°C · several hours
In cloud
0% of modelled night
Condensation
Moderate
600 m9/100 · very poor
Wind / gust
30 mph / 51 mph
Typical / low
9.9°C / 7.2°C · much of the night
In cloud
80% of modelled night
Condensation
High
900 m9/100 · very poor
Wind / gust
35 mph / 60 mph
Typical / low
7.7°C / 5.4°C · much of the night
In cloud
87% 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 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.
Did this match your night?Share a quick observation to help improve this beta forecast.Give feedback →
Daytime · exposed rockClimbing & scramblingBetaRock may be damp or still drying. Gusts near 50 mph may affect balance on exposed rock.Poor0/100View detailsHide details
Generic exposed-rock guidance
Full climbing & scrambling outlook
Conditions for exposed scrambling look very poor (0/100). Recent rain may leave seepage and damp rock, especially on shaded sections. The mapped summit rock is Calcareous pelite (Ben Lawers Schist Formation). Dry quartz-rich bands can be grippy, while mica-rich or foliated sections, lichen and vegetation may become slippery when wet. Gusts may reach about 50 mph. Crosswinds can make exposed ridges substantially more serious.
Rock surfaceDry overhead; seepage uncertainPeak gust51 mphRainPossible · 78%
Main factorsgusts around 50 mphdamp or incompletely dried rock possible
Mapped rock across the summit and available routes
Calcareous peliteBen Lawers Schist Formation
Dry quartz-rich bands can be grippy, while mica-rich or foliated sections, lichen and vegetation may become slippery when wet. Summit-point mapping plus representative BGS bedrock samples along available GPX routes. These are not continuous geological surveys; contacts, superficial deposits and the exposed rock on individual holds may differ.
Rock groups along the sampled routes
These are mapped rock groups, not separate weather forecasts or a ranking of route safety.
Meall Greigh, An Stùc and Meall Garbh (Ben Lawers)
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.
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 An Stùc on Thursday 24 September 2026. It asks about intentions, not whether you actually went out. No name or account is needed.
Wind15-30 mph westerlyGusts25-35 mphFeels like-4 to 0°CPrecipitationUp to around 2 mmCloud-free summit estimate25%Cloud base through day700-1,700 mFreezing levelAbove summitDaylightSunrise 07:07 · Sunset 19:08 · 12.0 hours daylight
The day on the hill
Frequent summit cloud on An Stùc: summit wind broadly 15-30 mph, with gusts 25-35 mph at times (a fresh breeze).
Wind & exposure
Much calmer lower down - generally 5-15 mph in the valley, rising towards the tops.
Cloud & views
Cloud base around 700–1000 m through the morning, lifting to 1400–1700 m by late afternoon. Cloud is likely to cover the top for much of the day, though a brief clearance is possible during the evening.
Cloud-height uncertainty could put the summit in or out of cloud. Clear spells may be difficult to time.
Cloud may hang lower on western slopes and lift somewhat on the eastern side, but local terrain can differ. Any sunshine may be confined to lower ground or breaks away from the summit.
Drizzle is forecast at times. The forecast total is up to around 2 mm, but local amounts will vary.
Cold on exposed tops: air temperature broadly 2 to 6°C, feeling around -4 to 0°C in the wind. Forecast models differ on summit wind strength: around 9-30 mph at walker height, with gusts 12-43 mph.
Forecast confidence
Cloud height remains uncertain, especially where it is close to summit level. Keep windproof and warm layers readily available.
Summit wind could be roughly 9-30 mph, which changes how difficult exposed walking may feel.
Cloud-free timing: Around 15% early, improving to around 50% later.
Sunshine context Model-grid estimate, not summit sunshine
The surrounding model grid indicates 11 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
PoorSummit winds around 15-25 mph. Gusts around 25-35 mph are possible on exposed ground.
48/100
Afternoon · 12:00–17:00
PoorSummit winds around 15-25 mph. Gusts around 25-35 mph are possible on exposed ground. Rain is forecast during this period.
44/100
Compare an early start with later conditions. The main forecast above covers the day in more detail.
Overnight · 17:00–08:00Wild campingBetaGusts near 40 mph make meaningful shelter important.39/100Poor · 600 mView detailsHide details
Night beginning Friday 25 September 2026
Full overnight outlook
Open-hillside camping looks poor overall around 600 m (39/100). A lower pitch near 300 m looks more comfortable. Conditions are less suitable by 900 m. Open-ground gusts may reach about 40 mph. Seek meaningful shelter. Peak gusts range from about 30 mph at 300 m to 40 mph at 900 m. A little rain may coincide with pitching or packing up. Pitches near 600 and 900 m may spend part of the night in cloud, bringing damp conditions and poor visibility while cloud is present. Condensation risk is high near 600 and 900 m. Ventilation will matter. The coldest temperature falls from about 7.4°C at 300 m to 5.1°C at 900 m.
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: 25 Sep, 17:00 BST to 26 Sep, 08:00 BST. Approximate open-horizon times; hills can hide the Moon. Still take a headtorch.
Elevation reference (open ground)
300 m59/100 · mixed
Wind / gust
18 mph / 29 mph
Typical / low
7.5°C / 7.4°C · much of the night
In cloud
0% of modelled night
Condensation
Moderate
600 m39/100 · poor
Wind / gust
21 mph / 35 mph
Typical / low
7.3°C / 7.2°C · much of the night
In cloud
60% of modelled night
Condensation
High
900 m39/100 · poor
Wind / gust
25 mph / 41 mph
Typical / low
5.3°C / 5.1°C · much of the night
In cloud
80% 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 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.
Did this match your night?Share a quick observation to help improve this beta forecast.Give feedback →
Daytime · exposed rockClimbing & scramblingBetaWet rock is likely. Gusts near 30 mph may affect balance on exposed rock.Poor2/100View detailsHide details
Generic exposed-rock guidance
Full climbing & scrambling outlook
Conditions for exposed scrambling look very poor (2/100). Rain during the climbing period is likely to leave rock wet and more slippery. The mapped summit rock is Calcareous pelite (Ben Lawers Schist Formation). Dry quartz-rich bands can be grippy, while mica-rich or foliated sections, lichen and vegetation may become slippery when wet. Gusts may reach about 30 mph. Crosswinds can make exposed ridges substantially more serious. Cloud may also make route-finding and retreat harder.
Rock surfaceWet rock likelyPeak gust32 mphRain0.9 mm
Main factorsgusts around 30 mphwet rock likelymuch of the route may be in cloud
Mapped rock across the summit and available routes
Calcareous peliteBen Lawers Schist Formation
Dry quartz-rich bands can be grippy, while mica-rich or foliated sections, lichen and vegetation may become slippery when wet. Summit-point mapping plus representative BGS bedrock samples along available GPX routes. These are not continuous geological surveys; contacts, superficial deposits and the exposed rock on individual holds may differ.
Rock groups along the sampled routes
These are mapped rock groups, not separate weather forecasts or a ranking of route safety.
Meall Greigh, An Stùc and Meall Garbh (Ben Lawers)
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.
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 An Stùc on Friday 25 September 2026. It asks about intentions, not whether you actually went out. No name or account is needed.
Wind25-35 mph southwesterlyGusts35-45 mphFeels like-4 to 0°CPrecipitationUp to around 2 mmCloud-free summit estimate5%Cloud base through day500-800 mFreezing levelAbove summitDaylightSunrise 07:09 · Sunset 19:06 · 11.9 hours daylight
The day on the hill
Frequent summit cloud on An Stùc: summit wind broadly 25-35 mph, with gusts 35-45 mph at times (strong winds).
Wind & exposure
Much calmer lower down - generally 10-20 mph in the valley, rising towards the tops. Summit wind strength is uncertain: around 15-37 mph at walker height, with gusts 21-52 mph.
Check again nearer the time. Keep windproof and warm layers readily available.
If clothing gets wet, you can cool more quickly. Keep a dry warm layer protected.
Buffeting may affect balance on exposed ground, particularly near ridges and edges.
Cloud & views
Cloud base mostly around 500–800 m through daylight. Cloud is likely to cover the top for most or all of daylight, with no dependable break.
Cloud may hang lower on southwestern slopes and lift somewhat on the northeastern side, but local terrain can differ. Any sunshine may be confined to lower ground or breaks away from the summit.
Drizzle is forecast for much of the day. The forecast total is up to around 2 mm, but local amounts will vary.
Cold on exposed tops: air temperature broadly 2 to 6°C, feeling around -4 to 0°C in the wind.
Forecast confidence
Summit wind could be roughly 15-37 mph, which changes how difficult exposed walking may feel.
Sunshine context Model-grid estimate, not summit sunshine
The surrounding model grid indicates 10 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
PoorSummit winds around 25-35 mph. Gusts around 35-45 mph are possible on exposed ground. Buffeting may affect balance on exposed ground, particularly near ridges and edges. Rain is forecast during this period.
24/100
Afternoon · 12:00–17:00
PoorSummit winds around 25-35 mph. Gusts around 35-45 mph are possible on exposed ground. Buffeting may affect balance on exposed ground, particularly near ridges and edges. Rain is forecast during this period. Rain is possible during the afternoon, but forecast models disagree on whether it will fall.
14/100
Compare an early start with later conditions. The main forecast above covers the day in more detail.
Overnight · 17:00–08:00Wild campingBetaExposed camping is not recommended near 900 m: gusts may reach about 40 mph. Sustained winds may reach about 30 mph at times. Lower sheltered ground may be less exposed, but this forecast does not confirm a suitable pitch or a safe approach. Check its overnight conditions separately.39/100Poor · 600 mView detailsHide details
Night beginning Saturday 26 September 2026
Full overnight outlook
Exposed camping is not recommended near 900 m: gusts may reach about 40 mph. Sustained winds may reach about 30 mph at times. Lower sheltered ground may be less exposed, but this forecast does not confirm a suitable pitch or a safe approach. Check its overnight conditions separately. Open-hillside camping looks poor overall around 600 m (39/100). Peak gusts range from about 30 mph at 300 m to 40 mph at 900 m. Around 1.8 mm is forecast, with rain liable to affect both pitching and packing up. Pitches near 600 and 900 m may spend part of the night in cloud, bringing damp conditions and poor visibility while cloud is present. Condensation risk is high near 300, 600 and 900 m. Ventilation will matter. The coldest temperature falls from about 9.7°C at 300 m to 7.3°C at 900 m.
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: 26 Sep, 17:00 BST to 27 Sep, 08:00 BST. Approximate open-horizon times; hills can hide the Moon. Still take a headtorch.
Elevation reference (open ground)
300 m59/100 · mixed
Wind / gust
19 mph / 30 mph
Typical / low
9.9°C / 9.7°C · much of the night
In cloud
0% of modelled night
Condensation
High
600 m39/100 · poor
Wind / gust
22 mph / 36 mph
Typical / low
9.6°C / 9.3°C · much of the night
In cloud
100% of modelled night
Condensation
High
900 m19/100 · very poor
Wind / gust
26 mph / 42 mph
Typical / low
7.7°C / 7.3°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 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 & scramblingBetaWet rock is likely. Gusts near 40 mph may affect balance on exposed rock.Poor0/100View detailsHide details
Generic exposed-rock guidance
Full climbing & scrambling outlook
Conditions for exposed scrambling look very poor (0/100). Rain during the climbing period is likely to leave rock wet and more slippery. The mapped summit rock is Calcareous pelite (Ben Lawers Schist Formation). Dry quartz-rich bands can be grippy, while mica-rich or foliated sections, lichen and vegetation may become slippery when wet. Gusts may reach about 40 mph. Crosswinds can make exposed ridges substantially more serious. Cloud may also make route-finding and retreat harder.
Rock surfaceWet rock likelyPeak gust42 mphRain1.2 mm
Main factorsgusts around 40 mphwet rock likelymuch of the route may be in cloud
Mapped rock across the summit and available routes
Calcareous peliteBen Lawers Schist Formation
Dry quartz-rich bands can be grippy, while mica-rich or foliated sections, lichen and vegetation may become slippery when wet. Summit-point mapping plus representative BGS bedrock samples along available GPX routes. These are not continuous geological surveys; contacts, superficial deposits and the exposed rock on individual holds may differ.
Rock groups along the sampled routes
These are mapped rock groups, not separate weather forecasts or a ranking of route safety.
Meall Greigh, An Stùc and Meall Garbh (Ben Lawers)
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.
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 An Stùc on Saturday 26 September 2026. It asks about intentions, not whether you actually went out. No name or account is needed.
Wind20-30 mph southerlyGusts30-40 mphFeels like-2 to 2°CPrecipitationUp to around 2 mmCloud-free summit estimate80%Cloud base through day700-2,200 mFreezing levelAbove summitDaylightSunrise 07:11 · Sunset 19:03 · 11.9 hours daylight
The day on the hill
On An Stùc: summit wind broadly 20-30 mph, with gusts 30-40 mph at times (strong winds).
Wind & exposure
Much calmer lower down - generally 5-15 mph in the valley, rising towards the tops.
Cloud & views
Cloud base around 700–1000 m in the morning, lifting to 1600–1900 m around midday and 1900–2200 m by late afternoon. Summit cloud is extensive early, becoming less frequent later.
Sunny spells are possible away from summit cloud, but may not reach the top while it is in cloud. Drizzle is forecast at times.
The forecast total is up to around 2 mm, but local amounts will vary. Cold on exposed tops: air temperature broadly 4 to 8°C, feeling around -2 to 2°C in the wind.
Forecast confidence
Cloud height remains uncertain, especially where it is close to summit level. A windproof layer will help, with an extra warm layer for stops.
Buffeting may affect balance on exposed ground, particularly near ridges and edges. Overall confidence is unavailable: insufficient comparable wind, rain guidance.
Cloud-free timing: Cloudy early, clearing later.
Sunshine context Model-grid estimate, not summit sunshine
The surrounding model grid indicates 7.1 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
PoorSummit winds around 20-30 mph. Gusts around 30-40 mph are possible on exposed ground. Buffeting may affect balance on exposed ground, particularly near ridges and edges. Summit cloud is more persistent early in this period, with better prospects later. Rain is forecast during this period.
34/100
Afternoon · 12:00–17:00
MixedSummit winds around 20-30 mph. Gusts around 30-40 mph are possible on exposed ground.
67/100
Compare an early start with later conditions. The main forecast above covers the day in more detail.
Overnight · 17:00–08:00Wild campingBetaGusts near 35 mph make meaningful shelter important.59/100Mixed · 600 mView detailsHide details
Night beginning Sunday 27 September 2026
Full overnight outlook
Open-hillside camping looks mixed overall around 600 m (59/100). A lower pitch near 300 m looks more comfortable. Conditions are less suitable by 900 m. Open-ground gusts may reach about 35 mph. Seek meaningful shelter. Peak gusts range from about 25 mph at 300 m to 35 mph at 900 m. Wind direction may change substantially during the night. Shelter that works at dusk may be less effective later. A little rain may coincide with pitching or packing up. Pitches near 900 m may spend part of the night in cloud, bringing damp conditions and poor visibility while cloud is present. Condensation risk is high near 600 and 900 m. Ventilation will matter.
Extensive cloud may limit moonlight. Illumination describes the sunlit part of the Moon, not brightness at your pitch.
Overnight window: 27 Sep, 17:00 BST to 28 Sep, 08:00 BST. Approximate open-horizon times; hills can hide the Moon. Still take a headtorch.
Elevation reference (open ground)
300 m75/100 · promising
Wind / gust
17 mph / 26 mph
Typical / low
10.5°C / 5.6°C · several hours
In cloud
0% of modelled night
Condensation
Moderate
600 m59/100 · mixed
Wind / gust
20 mph / 32 mph
Typical / low
9.1°C / 5.6°C · much of the night
In cloud
13% of modelled night
Condensation
High
900 m39/100 · poor
Wind / gust
24 mph / 37 mph
Typical / low
7.8°C / 4.3°C · several hours
In cloud
60% 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.
Did this match your night?Share a quick observation to help improve this beta forecast.Give feedback →
Daytime · exposed rockClimbing & scramblingBetaWet rock is likely. Gusts near 35 mph may affect balance on exposed rock.Poor35/100View detailsHide details
Generic exposed-rock guidance
Full climbing & scrambling outlook
Conditions for exposed scrambling look poor (35/100). Rain during the climbing period is likely to leave rock wet and more slippery. The mapped summit rock is Calcareous pelite (Ben Lawers Schist Formation). Dry quartz-rich bands can be grippy, while mica-rich or foliated sections, lichen and vegetation may become slippery when wet. Gusts may reach about 35 mph. Crosswinds can make exposed ridges substantially more serious.
Rock surfaceWet rock likelyPeak gust36 mphRain0.5 mm
Main factorsgusts around 35 mphwet rock likely
Mapped rock across the summit and available routes
Calcareous peliteBen Lawers Schist Formation
Dry quartz-rich bands can be grippy, while mica-rich or foliated sections, lichen and vegetation may become slippery when wet. Summit-point mapping plus representative BGS bedrock samples along available GPX routes. These are not continuous geological surveys; contacts, superficial deposits and the exposed rock on individual holds may differ.
Rock groups along the sampled routes
These are mapped rock groups, not separate weather forecasts or a ranking of route safety.
Meall Greigh, An Stùc and Meall Garbh (Ben Lawers)
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.
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 An Stùc on Sunday 27 September 2026. It asks about intentions, not whether you actually went out. No name or account is needed.
Wind20-30 mph southwesterlyGusts30-40 mphFeels like-6 to -2°CPrecipitationAround 2-5 mmCloud-free summit estimate45%Cloud base through day700-1,700 mFreezing levelAbove summitDaylightSunrise 07:13 · Sunset 19:00 · 11.8 hours daylight
The day on the hill
A wet day on An Stùc: summit wind broadly 20-30 mph, with gusts 30-40 mph at times (strong winds). Visibility may drop briefly in showers.
Wind & exposure
Much calmer lower down - generally 5-15 mph in the valley, rising towards the tops.
Cloud & views
Cloud base around 700–1000 m in the morning, then around 1400–1700 m around midday and 700–1000 m by late afternoon. The top is likely to drift in and out of cloud, with the best chance of a view from midday into the afternoon.
Cloud-height uncertainty could put the summit in or out of cloud. Clear spells may be difficult to time.
Cloud may hang lower on southwestern slopes and lift somewhat on the northeastern side, but local terrain can differ. Sunny spells are possible away from summit cloud, but may not reach the top while it is in cloud.
Drizzle is forecast for much of the day, with some passing showers too. The forecast total is around 2-5 mm, but local amounts will vary.
Cold on exposed tops: air temperature broadly 2 to 6°C, feeling around -6 to -2°C in the wind. Forecast models differ on summit wind strength.
Treat the wind figures as a guide. Keep windproof and warm layers readily available.
If clothing gets wet, you can cool more quickly. Keep a dry warm layer protected.
Buffeting may affect balance on exposed ground, particularly near ridges and edges.
Forecast confidence
Overall confidence is unavailable: insufficient comparable wind, rain guidance.
Cloud-free timing: Around 10% early, improving to around 35% later.
Sunshine context Model-grid estimate, not summit sunshine
The surrounding model grid indicates 7.8 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.
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
PoorSummit winds around 20-30 mph. Gusts around 30-40 mph are possible on exposed ground. Buffeting may affect balance on exposed ground, particularly near ridges and edges. Rain is forecast during this period.
30/100
Afternoon · 12:00–17:00
MixedSummit winds around 20-30 mph. Gusts around 30-40 mph are possible on exposed ground. Buffeting may affect balance on exposed ground, particularly near ridges and edges. Rain is forecast during this period.
52/100
Compare an early start with later conditions. The main forecast above covers the day in more detail.
Overnight · 17:00–08:00Wild campingBetaGusts near 40 mph make meaningful shelter important.59/100Mixed · 600 mView detailsHide details
Night beginning Monday 28 September 2026
Full overnight outlook
Open-hillside camping looks mixed overall around 600 m (59/100). A lower pitch near 300 m looks more comfortable. Conditions are less suitable by 900 m. Open-ground gusts may reach about 40 mph. Seek meaningful shelter. Peak gusts range from about 25 mph at 300 m to 40 mph at 900 m. A little rain may coincide with pitching or packing up. Pitches near 900 m may spend part of the night in cloud, bringing damp conditions and poor visibility while cloud is present. Condensation risk is high near 300, 600 and 900 m. Ventilation will matter.
Extensive cloud may limit moonlight. Illumination describes the sunlit part of the Moon, not brightness at your pitch.
Overnight window: 28 Sep, 17:00 BST to 29 Sep, 08:00 BST. Approximate open-horizon times; hills can hide the Moon. Still take a headtorch.
Elevation reference (open ground)
300 m64/100 · reasonable
Wind / gust
16 mph / 27 mph
Typical / low
5.6°C / 5.3°C · much of the night
In cloud
0% of modelled night
Condensation
High
600 m59/100 · mixed
Wind / gust
19 mph / 32 mph
Typical / low
5.6°C / 5.3°C · much of the night
In cloud
0% of modelled night
Condensation
High
900 m39/100 · poor
Wind / gust
23 mph / 38 mph
Typical / low
4.6°C / 4.4°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.
Did this match your night?Share a quick observation to help improve this beta forecast.Give feedback →
Daytime · exposed rockClimbing & scramblingBetaWet rock is likely. Gusts near 35 mph may affect balance on exposed rock.Poor29/100View detailsHide details
Generic exposed-rock guidance
Full climbing & scrambling outlook
Conditions for exposed scrambling look poor (29/100). Rain during the climbing period is likely to leave rock wet and more slippery. The mapped summit rock is Calcareous pelite (Ben Lawers Schist Formation). Dry quartz-rich bands can be grippy, while mica-rich or foliated sections, lichen and vegetation may become slippery when wet. Gusts may reach about 35 mph. Crosswinds can make exposed ridges substantially more serious. Cloud may also make route-finding and retreat harder.
Rock surfaceWet rock likelyPeak gust36 mphRain3.4 mm
Main factorsgusts around 35 mphwet rock likelymuch of the route may be in cloud
Mapped rock across the summit and available routes
Calcareous peliteBen Lawers Schist Formation
Dry quartz-rich bands can be grippy, while mica-rich or foliated sections, lichen and vegetation may become slippery when wet. Summit-point mapping plus representative BGS bedrock samples along available GPX routes. These are not continuous geological surveys; contacts, superficial deposits and the exposed rock on individual holds may differ.
Rock groups along the sampled routes
These are mapped rock groups, not separate weather forecasts or a ranking of route safety.
Meall Greigh, An Stùc and Meall Garbh (Ben Lawers)
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.
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 An Stùc on Monday 28 September 2026. It asks about intentions, not whether you actually went out. No name or account is needed.
