Cùl Mòr weather forecast.

Cloud-free timing: Best around midday at about 75%; around 33% early and 40% later.

A mixed day on Cùl Mòr: summit wind broadly 20-35 mph, with gusts 35-45 mph during the morning (strong winds). Much calmer lower down - generally 10-20 mph in the valley, rising towards the tops. Cloud base around 600–900 m in the morning, then around 1000–1300 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 late morning into midday. Little or no rain expected. Confidence moderate (forecast models agree on the walking impact of the wind) - the summit peak could reasonably be 24-30 mph, so treat the headline as mid-range.

Cloud-free timing: Around 100% early, falling to around 60% later.

A mixed day on Cùl Mòr: summit wind broadly 15-30 mph, with gusts 30-40 mph during the evening (strong winds). Thunder watch from around midday into the evening: a small but credible risk is present. Watch for growing clouds and leave exposed tops if thunder develops. Cloud from about 500-1000 m upwards - the mid slopes and the 849 m top are inside it, so expect clag above 500-1000 m. Little or no rain expected. Confidence moderate (forecast models agree on the walking impact of the wind) - the summit peak could reasonably be 21-27 mph, so treat the headline as mid-range.

Forecast confidence: Summit wind could be roughly 14-28 mph, which changes how difficult exposed walking may feel.

A grey, cloudy day on Cùl Mòr: summit wind broadly 10-30 mph, with gusts 25-35 mph during the morning (strong winds). Much calmer lower down - generally 0-10 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 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 (Summit wind could be roughly 14-28 mph, which changes how difficult exposed walking may feel) - the summit peak could reasonably be 14-28 mph, so treat the headline as mid-range.

A grey, cloudy day on Cùl Mòr: summit wind broadly 5-15 mph, with gusts 10-20 mph during the evening (a moderate breeze). 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. Little or no rain expected.

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

A rough, clagged-in day on Cùl Mòr: summit wind broadly 5-15 mph, with gusts 10-20 mph during the afternoon (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 600–900 m through the morning, lowering to 400–700 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.

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

A rough, clagged-in day on Cùl Mòr: summit wind broadly 5-25 mph, with gusts 25-35 mph early in the morning (fresh and blowy). 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 mostly around 300–600 m through daylight. 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. Confidence moderate (Summit wind could be roughly 12-29 mph, which changes how difficult exposed walking may feel) - the summit peak could reasonably be 12-29 mph, so treat the headline as mid-range.

Forecast confidence: Summit wind could be roughly 24-41 mph, which changes how difficult exposed walking may feel.

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

A grey, cloudy day on Cùl Mòr: summit wind broadly 20-35 mph, with gusts 40-50 mph during the morning (gale-force winds). There could be a spate risk based on forecast rainfall. Burns and unbridged crossings may rise quickly. Most likely from around 02:00 until around 17:00. Much calmer lower down - generally 10-20 mph in the valley, rising towards the tops. Cloud base around 400–700 m through the morning, lifting to 700–1000 m by late afternoon. Expect clag for much of the day, though a brief clearance is possible during 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 5-10 mm indicated; timing and local totals remain uncertain. Cold on top: air temperature broadly 2 to 6°C, feeling around -2 to 2°C in the wind - wrap up. Confidence moderate (Summit wind could be roughly 24-41 mph, which changes how difficult exposed walking may feel) - the summit peak could reasonably be 24-41 mph, so treat the headline as mid-range.