A mixed day on Calders: summit wind broadly 15-35 mph, with gusts 35-45 mph early in the morning (gale-force winds). Much calmer lower down - generally 5-15 mph in the valley, rising towards the tops. Cloud base 500-1600 m - the top is likely to drift in and out of cloud, with the best chance of a view from around midday into the evening. The cloud base is very changeable today - it could sit much higher or lower than that at times, so read the sky. Cloud will be lowest on the W slopes, down to about 1000-1300 m; the E side should be clearer, lifting to around 1100-1400 m. Little or no rain expected.
Calders weather forecast.
675 m summit forecast for wind, cloud, rain and temperature. Updated from the Thursday 6 August 2026 model run.
Seven-day Calders forecast.
Conditions can change quickly with height. Use the day-by-day summit detail below, then check again close to departure.
A mixed day on Calders: summit wind broadly 20-35 mph, with gusts 35-45 mph around midday (strong winds). Much calmer lower down - generally 5-15 mph in the valley, rising towards the tops. Cloud base 600-1600 m - the top is likely to drift in and out of cloud, with the best chance of a view from the morning into the evening. The cloud base is very changeable today - it could sit much higher or lower than that at times, so read the sky. Cloud will be lowest on the SW slopes, down to about 1000-1300 m; the NE side should be clearer, lifting to around 1100-1400 m. Little or no rain expected.
A mixed day on Calders: summit wind broadly 20-35 mph, with gusts 35-45 mph early in the morning (strong winds). Much calmer lower down - generally 10-20 mph in the valley, rising towards the tops. Cloud base 500-1100 m - 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. Bright spells with UV up to 6 - sunscreen on exposed skin. 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.
A mixed day on Calders: summit wind broadly 15-30 mph, with gusts 35-45 mph early in the morning (strong winds). Much calmer lower down - generally 5-15 mph in the valley, rising towards the tops. Cloud base 500-1100 m - the top is likely to drift in and out of cloud, with the best chance of a view from late afternoon into the evening. Cloud will be lowest on the SW slopes, down to about 700-1000 m; the NE side should be clearer, lifting to around 800-1100 m. Little or no rain expected. Confidence moderate (ensemble members show a moderate spread) - the summit peak could reasonably be 22-35 mph, so treat the headline as mid-range.
A mixed day on Calders: summit wind broadly 5-15 mph, with gusts 10-20 mph during the morning (a moderate breeze). Cloud base 500-1400 m - the top is likely to drift in and out of cloud, with the best chance of a view from around midday into the evening. The cloud base is very changeable today - it could sit much higher or lower than that at times, so read the sky. Some rain is likely, with around 2-5 mm indicated; timing and local totals remain uncertain. Low confidence (ensemble members are widely spread) - the summit peak could be anywhere from 6 to 16 mph; check again nearer the time.
A mixed day on Calders: summit wind broadly 15-30 mph, with gusts 35-45 mph during the evening (strong winds). Much calmer lower down - generally 5-15 mph in the valley, rising towards the tops. Cloud from about 100-400 m upwards - the mid slopes and the 675 m top are inside it, so expect clag above 100-400 m. Little or no rain expected. Bright spells with UV up to 6 - sunscreen on exposed skin. Low confidence (ensemble members are widely spread) - the summit peak could be anywhere from 15 to 40 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.
A wild day on Calders: summit wind broadly 20-40 mph, with gusts 40-50 mph early in the morning (gale-force winds). Much calmer lower down - generally 5-15 mph in the valley, rising towards the tops. Any cloud sits well above the tops (base 700-1200 m) - clear summits. Little or no rain expected. Bright spells with UV up to 6 - sunscreen on exposed skin. Low confidence (ensemble members are widely spread) - the summit peak could be anywhere from 19 to 50 mph; check again nearer the time.
Forecast run: 2026-08-06
A forecast is part of the decision.
Mountain weather can differ sharply from conditions in the valley. Check official warnings, carry appropriate navigation and clothing, and be ready to change the plan.