Bidean nam Bian weather forecast.

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

A grey, cloudy day on Bidean nam Bian: summit wind broadly 10-25 mph, with gusts 25-35 mph early in the morning (fresh and blowy). 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 western slopes; the eastern 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 -2 to 2°C in the wind - wrap up.

A rough, clagged-in day on Bidean nam Bian: summit wind broadly 35-45 mph, with gusts 55-65 mph during the afternoon (storm-force winds). High spate risk based on forecast rainfall. Burns and unbridged crossings may become difficult or impassable. Most likely from around 00:00 until around 22:00. Much calmer lower down - generally 10-20 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. 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 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 27-51 mph, so treat the headline as mid-range.

A rough, clagged-in day on Bidean nam Bian: summit wind broadly 35-55 mph, with gusts 65-75 mph during the morning (storm-force winds). 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 10:00 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 700-1000 m in the morning, lowering to 500-800 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. 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 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 27 to 64 mph; check again nearer the time.

A rough, clagged-in day on Bidean nam Bian: summit wind broadly 20-35 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 03:00 the following day. 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 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 2 to 6°C, feeling around -4 to 0°C in the wind - wrap up. Low confidence (ensemble members are widely spread) - the summit peak could be anywhere from 22 to 47 mph; check again nearer the time.

Cloud-free timing: Around 0% early, improving to around 83% later.

A grey, cloudy day on Bidean nam Bian: 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 2 to 6°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 28 mph; check again nearer the time.

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

A mixed day on Bidean nam Bian: summit wind broadly 10-35 mph, with gusts 35-45 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 600-900 m in the morning, lifting to 2000-2300 m around midday and 2000-2300 m by late afternoon. The top is likely to drift in and out of cloud, with the best chance of a view from the morning into the evening. Little or no rain expected. Low confidence (ensemble members are widely spread) - the summit peak could be anywhere from 19 to 41 mph; check again nearer the time.

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

A rough, clagged-in day on Bidean nam Bian: 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 1500-1800 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 21 to 73 mph; check again nearer the time. 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.