Càrn Bhac weather forecast.

Cloud-free timing: Cloudy early, clearing later.

A mixed day on Càrn Bhac: summit wind broadly 10-25 mph, with gusts 25-35 mph around midday (strong winds). Much calmer lower down - generally 5-15 mph in the valley, rising towards the tops. Cloud base around 600–900 m in the morning, then around 1500–1800 m around midday and 1300–1600 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.

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

Cloud-free timing: Cloudy early, clearing later.

A mixed day on Càrn Bhac: summit wind broadly 5-20 mph, with gusts 15-25 mph early in the morning (a moderate breeze). Thunderstorms are possible from around midday into the evening. Keep an escape route from exposed ridges and descend if thunder develops. Cloud base around 700–1000 m in the morning, then around 1400–1700 m around midday and 1200–1500 m by late afternoon. Summit cloud should lift later, bringing a better chance of clear views. Some rain is likely, with up to around 2 mm indicated; timing and local totals remain uncertain.

Forecast confidence: Rain is possible, but forecast models differ by about 9 hours on when it arrives.

A grey, cloudy day on Càrn Bhac: summit wind broadly 10-25 mph, with gusts 25-35 mph during the afternoon (fresh and blowy). 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 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. Confidence moderate (forecast models agree on the walking impact of the wind) - the summit peak could reasonably be 15-30 mph, so treat the headline as mid-range.

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 40% later.

A grey, cloudy day on Càrn Bhac: summit wind broadly 5-20 mph, with gusts 15-25 mph during the morning (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 during the afternoon. Some rain is likely, with up to around 2 mm indicated; timing and local totals remain uncertain.

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

Cloud-free timing: Around 0% early, improving to around 80% later.

A wild day on Càrn Bhac: summit wind broadly 0-15 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. 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 23:00. Cloud base around 400-700 m in the morning, lifting to 1300-1600 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. A persistently wet day is possible, with around 5-10 mm indicated; local totals could vary considerably. 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: A low thunderstorm risk remains difficult to time precisely.

A grey, cloudy day on Càrn Bhac: summit wind broadly 5-30 mph, with gusts 30-40 mph during the evening (strong winds). Thunderstorms are possible from early morning into the evening. Keep an escape route from exposed ridges and descend if thunder develops. The ground is likely to be wet after recent rain. Cloud base around 600–900 m in the morning, lifting to 800–1100 m around midday and 900–1200 m by late afternoon. Expect the top to stay in cloud for most or all of daylight, with no dependable break. Some rain is likely, with around 5-10 mm indicated; timing and local totals remain uncertain. Confidence moderate (Summit wind could be roughly 17-35 mph, which changes how difficult exposed walking may feel) - the summit peak could reasonably be 17-35 mph, so treat the headline as mid-range.