Càrn Mòr weather forecast.

Cloud-free timing: Around 67% early, falling to around 40% later.

A mixed day on Càrn Mòr: summit wind broadly 10-25 mph, with gusts 20-30 mph around midday (fresh and blowy). Cloud base around 500–800 m in the morning, then around 800–1100 m around midday and 500–800 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 southeastern slopes; the northwestern side should see somewhat higher bases and better breaks. Little or no rain expected. Cloud base is the least certain part of this - the models are only moderately agreed, so it could sit a couple of hundred metres either way.

Cloud-free timing: Cloudy early, clearing later.

A mixed day on Càrn Mòr: summit wind broadly 15-30 mph, with gusts 30-40 mph during the afternoon (strong winds). Much calmer lower down - generally 5-15 mph in the valley, rising towards the tops. Cloud base around 500–800 m in the morning, then around 1400–1700 m around midday and 900–1200 m by late afternoon. Summit cloud should lift later, bringing a better chance of clear views. Cloud is likely to hang lowest on southeastern slopes; the northwestern side should see somewhat higher bases and better breaks. Little or no rain expected. Confidence moderate (forecast models agree on the walking impact of the wind) - the summit peak could reasonably be 24-26 mph, so treat the headline as mid-range.

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

Cloud-free timing: Around 0% early, improving to around 40% later.

A grey, cloudy day on Càrn Mòr: summit wind broadly 5-20 mph, with gusts 15-25 mph early in the morning (fresh and blowy). Thunderstorms are possible from the morning into the evening. Keep an escape route from exposed ridges and descend if thunder develops. Cloud base around 500-800 m in the morning, lifting to 700-1000 m around midday. Expect clag for much of the day, though a brief clearance is possible during the afternoon. Little or no rain expected.

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

A grey, cloudy day on Càrn Mòr: summit wind broadly 15-30 mph, with gusts 25-35 mph during the evening (strong winds). Much calmer lower down - generally 5-15 mph in the valley, rising towards the tops. Cloud base mostly around 400–700 m through daylight. Expect the top to stay in cloud for most or all of daylight, with no dependable break. Cloud is likely to hang lowest on northwestern slopes; the southeastern 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 (Summit wind could be roughly 17-34 mph, which changes how difficult exposed walking may feel) - the summit peak could reasonably be 17-34 mph, so treat the headline as mid-range.

Forecast confidence: Summit wind could be roughly 14-34 mph, which changes how difficult exposed walking may feel.

A grey, cloudy day on Càrn Mòr: summit wind broadly 5-25 mph, with gusts 25-35 mph early in the morning (fresh and blowy). Much calmer lower down - generally 0-10 mph in the valley, rising towards the tops. Cloud base mostly around 500–800 m through daylight. Expect the top to stay in cloud for most or all of daylight, with no dependable break. Some rain is likely, with up to around 2 mm indicated; timing and local totals remain uncertain. Confidence moderate (Summit wind could be roughly 14-34 mph, which changes how difficult exposed walking may feel) - the summit peak could reasonably be 14-34 mph, so treat the headline as mid-range. Cloud base is the least certain part of this - the models are only moderately agreed, so it could sit a couple of hundred metres either way.

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

A rough, clagged-in day on Càrn Mòr: summit wind broadly 0-15 mph, with gusts 10-20 mph during the evening (a moderate breeze). 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 in the morning, then around 600–900 m around midday and 500–800 m by late afternoon. Expect the top to stay in cloud for most or all of daylight, with no dependable break. A persistently wet day is possible, with around 5-10 mm indicated; local totals could vary considerably. Treat the cloud base with caution - the models disagree on humidity, so it could be well above or below the figure given.

Forecast confidence: Forecast models disagree on whether meaningful rain reaches the hills during 10:00-16:00.

Cloud-free timing: Around 0% early, improving to around 40% later.

A grey, cloudy day on Càrn Mòr: summit wind broadly 5-30 mph, with gusts 30-40 mph during the evening (strong winds). The ground is likely to be wet after recent rain. Much calmer lower down - generally 0-10 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. Some rain is likely, with around 2-5 mm indicated; timing and local totals remain uncertain. Confidence moderate (Summit wind could be roughly 15-32 mph, which changes how difficult exposed walking may feel) - the summit peak could reasonably be 15-32 mph, so treat the headline as mid-range.