Ben Cruachan weather forecast.

Cloud-free timing: Around 0% early, improving to around 33% later.

A grey, cloudy day on Ben Cruachan: summit wind broadly 10-25 mph, with gusts 25-35 mph during the morning (fresh and blowy). The ground is likely to be wet after recent rain. Cloud base around 500-800 m in the morning, 1500-1800 m around midday and 1000-1300 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 northwestern slopes; the southeastern side should see somewhat higher bases and better breaks. Little or no rain expected. Cold on top: air temperature broadly 2 to 6°C, feeling around -4 to 0°C in the wind - wrap up.

Cloud-free timing: Around 0% early, improving to around 33% later.

A rough, clagged-in day on Ben Cruachan: summit wind broadly 30-45 mph, with gusts 50-60 mph during the afternoon (gale-force winds). The ground is likely to be wet after recent rain. Much calmer lower down - generally 10-20 mph in the valley, rising towards the tops. Cloud base around 500-800 m in the morning, lifting to 500-800 m around midday and 1000-1300 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 southwestern slopes; the northeastern 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 -2 to 2°C in the wind - wrap up. Confidence moderate (ensemble members show a moderate spread) - the summit peak could reasonably be 33-46 mph, so treat the headline as mid-range.

Cloud-free timing: Around 50% early, falling to around 0% later.

A rough, clagged-in day on Ben Cruachan: summit wind broadly 35-55 mph, with gusts 65-75 mph during the morning (storm-force winds). Much calmer lower down - generally 15-25 mph in the valley, rising towards the tops. Cloud base around 1400-1700 m in the morning, lowering to 500-800 m around midday and 500-800 m by late afternoon. Expect clag for much of the day, though a brief clearance is possible early in the morning. Cloud is likely to hang lowest on southwestern slopes; the northeastern side should see somewhat higher bases and better breaks. A persistently wet day is possible, with around 10-20 mm indicated; local totals could vary considerably. Cold on top: air temperature broadly 6 to 10°C, feeling around 0 to 4°C in the wind - wrap up. Confidence moderate (ensemble members show a moderate spread) - the summit peak could reasonably be 35-59 mph, so treat the headline as mid-range.

Cloud-free timing: Best around midday at about 25%; around 0% early and 0% later.

A rough, clagged-in day on Ben Cruachan: summit wind broadly 15-35 mph, with gusts 35-45 mph early in the morning (gale-force winds). The ground is likely to be wet after recent rain. High spate risk based on forecast rainfall. Burns and unbridged crossings may become difficult or impassable. Most likely from around 00:00 until around 15:00. Much calmer lower down - generally 5-15 mph in the valley, rising towards the tops. Cloud base around 500-800 m in the morning, 900-1200 m around midday and 700-1000 m by late afternoon. Expect clag for much of the day, though a brief clearance is possible around midday. Cloud is likely to hang lowest on western slopes; the eastern side should see somewhat higher bases and better breaks. A persistently wet day is possible, with around 10-20 mm indicated; local totals could vary considerably. Cold on top: air temperature broadly 4 to 8°C, feeling around -2 to 2°C in the wind - wrap up. Low confidence (ensemble members are widely spread) - the summit peak could be anywhere from 19 to 38 mph; check again nearer the time.

Cloud-free timing: Around 0% early, improving to around 67% later.

A grey, cloudy day on Ben Cruachan: summit wind broadly 5-20 mph, with gusts 15-25 mph early in the morning (a moderate breeze). The ground is likely to be saturated after recent rain. Expect boggy paths and rapid runoff if more rain arrives. Cloud base around 500-800 m in the morning, lifting to 1000-1300 m around midday and 1500-1800 m by late afternoon. The top is likely to drift in and out of cloud, with the best chance of a view from late afternoon into the evening. Little or no rain expected. Cold on top: air temperature broadly 4 to 8°C, feeling around -2 to 2°C in the wind - wrap up. Low confidence (ensemble members are widely spread) - the summit peak could be anywhere from 8 to 25 mph; check again nearer the time.

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

A mixed day on Ben Cruachan: summit wind broadly 15-35 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 around 3100-3400 m in the morning, lowering to 2000-2300 m around midday and 1000-1300 m by late afternoon. The top is likely to drift in and out of cloud, with the best chance of a view from early morning into the afternoon. Little or no rain expected. Low confidence (ensemble members are widely spread) - the summit peak could be anywhere from 19 to 40 mph; check again nearer the time.

Cloud-free timing: Around 50% early, falling to around 0% later.

A rough, clagged-in day on Ben Cruachan: summit wind broadly 30-45 mph, with gusts 50-60 mph during the morning (storm-force winds). A meaningful thunderstorm risk is indicated from the morning into overnight. Avoid committing to exposed ridges if storms begin to build. The ground is likely to be wet after recent rain. There could be a spate risk based on forecast rainfall. Burns and unbridged crossings may rise quickly. Most likely from around 11:00 until around 03:00 the following day. Much calmer lower down - generally 10-20 mph in the valley, rising towards the tops. Cloud base around 800-1100 m in the morning, lowering to 500-800 m around midday and 500-800 m by late afternoon. Expect clag for much of the day, though a brief clearance is possible early in the morning. 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 10-20 mm indicated; local totals could vary considerably. Low confidence (ensemble members are widely spread) - the summit peak could be anywhere from 23 to 75 mph; check again nearer the time.