Aonach Beag (Nevis Range) weather forecast.

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

A fine day on Aonach Beag (Nevis Range): summit wind broadly 10-25 mph, with gusts 25-35 mph during the morning (fresh and blowy). Any cloud sits well above the tops (base 1100-1500 m) - clear summits. Little or no rain expected.

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

A grey, cloudy day on Aonach Beag (Nevis Range): summit wind broadly 5-20 mph, with gusts 15-25 mph early in the morning (a moderate breeze). Thunderstorms are possible from late afternoon into the evening. Keep an escape route from exposed ridges and descend if thunder develops. 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. Some rain is likely, with around 2-5 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.

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

A grey, cloudy day on Aonach Beag (Nevis Range): summit wind broadly 5-15 mph, with gusts 10-20 mph around midday (a moderate breeze). Cloud base around 800–1100 m in the morning, then around 600–900 m around midday and 800–1100 m by late afternoon. Expect clag for much of the day, though a brief clearance is possible during the evening. 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.

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

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

A grey, cloudy day on Aonach Beag (Nevis Range): summit wind broadly 10-25 mph, with gusts 20-30 mph during the evening (fresh and blowy). Thunderstorms are a significant hazard from the morning into the evening. Exposed summits and ridges are a poor choice while storms are nearby. Much calmer lower down - generally 0-10 mph in the valley, rising towards the tops. Cloud base around 800–1100 m in the morning, then around 400–700 m around midday and 1300–1600 m by late afternoon. The top is likely to drift in and out of cloud, with the best chance of a view during the evening. Cloud is likely to hang lowest on southern slopes; the northern 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 14-25 mph, which changes how difficult exposed walking may feel) - the summit peak could reasonably be 14-25 mph, so treat the headline as mid-range.

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

A rough, clagged-in day on Aonach Beag (Nevis Range): summit wind broadly 10-40 mph, with gusts 40-50 mph during the evening (gale-force 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 5-15 mph in the valley, rising towards the tops. Cloud base around 300–600 m in the morning, then around 500–800 m around midday and 300–600 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 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 (Summit wind could be roughly 19-53 mph, which changes how difficult exposed walking may feel) - the summit peak could be anywhere from 19 to 53 mph; check again nearer the time.

Forecast confidence: Summit wind could be roughly 20-40 mph, which changes how difficult exposed walking may feel.

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

A grey, cloudy day on Aonach Beag (Nevis Range): summit wind broadly 15-35 mph, with gusts 35-45 mph around midday (gale-force 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 400–700 m through the morning, lifting to 1300–1600 m by late afternoon. The top is likely to drift in and out of cloud, with the best chance of a view 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 20-40 mph, which changes how difficult exposed walking may feel) - the summit peak could reasonably be 20-40 mph, so treat the headline as mid-range.