Aonach Shasuinn weather forecast.

888 m summit in Monadhliath and Creag Meagaidh. Seven-day wind, cloud, rain and temperature forecast, updated 27 August 2026 at 04:40 UTC.

At a glance

Today on Aonach Shasuinn.

Aonach Shasuinn on Thursday 27 August 2026: summit wind around 16 mph E, gusting 22 mph; modelled cloud-free summit for 64% of daylight; feels like 9°C; 0.0 mm rain.

Medium confidenceHow the forecast works

Seven-day Aonach Shasuinn forecast.

Conditions can change quickly with height. Use the day-by-day summit detail below, then check again close to departure.

Medium confidence
Wind16 mph E Gusts22 mph Feels9°C Rain0.0 mm Cloud-free summit64% Cloud base1,465 m Freezing level2,940 m Daylight06:10–20:31 · 14.3 h

Forecast confidence: A low thunderstorm risk remains difficult to time precisely.

Cloud-free timing: Cloudy early, clearing later.

A mixed day on Aonach Shasuinn: summit wind broadly 5-20 mph, with gusts 15-25 mph early in the morning (fresh and blowy). Cloud base around 500–800 m in the morning, lifting to 1200–1500 m around midday and 1400–1700 m by late afternoon. Summit cloud should lift later, bringing a better chance of clear views. Little or no rain expected.

Medium confidence
Wind23 mph NE Gusts32 mph Feels7°C Rain3.8 mm Cloud-free summit7% Cloud base685 m Freezing level3,006 m Daylight06:12–20:28 · 14.3 h

Forecast confidence: Rain is possible, but forecast models differ by about 12 hours on when it arrives.

Cloud-free timing: Around 0% early, improving to around 20% later.

A grey, cloudy day on Aonach Shasuinn: summit wind broadly 10-30 mph, with gusts 25-35 mph early in the morning (strong winds). Much calmer lower down - generally 5-15 mph in the valley, rising towards the tops. Cloud base mostly around 600–900 m through daylight. Expect clag for much of the day, though a brief clearance is possible during the evening. Cloud is likely to hang lowest on northeastern slopes; the southwestern side should see somewhat higher bases and better breaks. Some rain is likely, with around 2-5 mm indicated; timing and local totals remain uncertain. Confidence moderate (forecast models agree on the walking impact of the wind) - the summit peak could reasonably be 17-29 mph, so treat the headline as mid-range.

Medium confidence
Wind7 mph W Gusts10 mph Feels7°C Rain0.6 mm Cloud-free summit50% Cloud base671 m Freezing level2,558 m Daylight06:14–20:26 · 14.2 h

Forecast confidence: Rain is possible, but forecast models differ by about 14 hours on when it arrives.

Cloud-free timing: Around 0% early, improving to around 60% later.

A mixed day on Aonach Shasuinn: summit wind broadly 0-10 mph, with gusts 5-15 mph during the afternoon (a moderate breeze). Cloud base around 400-700 m in the morning, lifting to 800-1100 m around midday. The top is likely to drift in and out of cloud, with the best chance of a view from around midday into the evening. Little or no rain expected.

Medium confidence
Wind16 mph S Gusts23 mph Feels6°C Rain8.8 mm Cloud-free summit0% Cloud base447 m Freezing level2,580 m Daylight06:16–20:23 · 14.1 h

Forecast confidence: Thunderstorm timing is inherently uncertain and may shift by several hours.

Thunder risk: moderate

from the morning into the evening. Leave exposed summits and ridges if thunder develops.

A rough, clagged-in day on Aonach Shasuinn: summit wind broadly 5-20 mph, with gusts 20-30 mph during the afternoon (fresh and blowy). A meaningful thunderstorm risk is indicated from the morning into the evening. Avoid committing to exposed ridges if storms begin to build. Cloud base around 400–700 m through the morning, lifting to 600–900 m by late afternoon. Expect the top to stay in cloud for most or all of daylight, with no dependable break. Cloud is likely to hang lowest on southern slopes; the northern side should see somewhat higher bases and better breaks. A persistently wet day is possible, with around 5-10 mm indicated; local totals could vary considerably.

Medium confidence
Wind28 mph SW Gusts39 mph Feels4°C Rain5.9 mm Cloud-free summit21% Cloud base685 m Freezing level2,435 m Daylight06:18–20:20 · 14.0 h

Forecast confidence: Thunderstorm timing is inherently uncertain and may shift by several hours.

Thunder risk: moderate

from early morning into the evening. Leave exposed summits and ridges if thunder develops.

Cloud-free timing: Best around midday at about 50%; around 0% early and 0% later.

A grey, cloudy day on Aonach Shasuinn: summit wind broadly 5-35 mph, with gusts 35-45 mph during the evening (strong winds). A meaningful thunderstorm risk is indicated from early morning into the evening. Avoid committing to exposed ridges if storms begin to build. Much calmer lower down - generally 0-10 mph in the valley, rising towards the tops. Cloud base around 600–900 m in the morning, then around 1200–1500 m around midday and 600–900 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 is likely to hang lowest on southwestern slopes; the northeastern side should see somewhat higher bases and better breaks. Some rain is likely, with around 5-10 mm indicated; timing and local totals remain uncertain. Confidence moderate (Summit wind could be roughly 18-45 mph, which changes how difficult exposed walking may feel) - the summit peak could reasonably be 18-45 mph, so treat the headline as mid-range.

Medium confidence
Wind26 mph N Gusts36 mph Feels2°C Rain4.6 mm Cloud-free summit57% Cloud base926 m Freezing level2,102 m Daylight06:20–20:18 · 13.9 h

Forecast confidence: Rain is possible, but forecast models differ by about 14 hours on when it arrives.

Cloud-free timing: Around 0% early, improving to around 100% later.

A mixed day on Aonach Shasuinn: summit wind broadly 15-30 mph, with gusts 30-40 mph around midday (strong winds). Much calmer lower down - generally 5-15 mph in the valley, rising towards the tops. Cloud base around 400-700 m in the morning, lifting to 900-1200 m around midday. 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 is likely to hang lowest on northern slopes; the southern side should see somewhat higher bases and better breaks. Some rain is likely, with around 2-5 mm indicated; timing and local totals remain uncertain. Cold on top: air temperature broadly 4 to 8°C, feeling around 0 to 4°C in the wind - wrap up. Confidence moderate (Summit wind could be roughly 17-31 mph, which changes how difficult exposed walking may feel) - the summit peak could reasonably be 17-31 mph, so treat the headline as mid-range.

Forecast run: 2026-08-27

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