A mixed day on Helm Crag: summit wind broadly 10-20 mph, with gusts 20-30 mph early in the morning (fresh and blowy). Any cloud sits well above the tops (base 500-1600 m) - clear summits. Cloud is likely to hang lowest on western slopes; the eastern side should see somewhat higher bases and better breaks. Some rain is likely, with up to around 2 mm indicated; timing and local totals remain uncertain.
Helm Crag weather forecast.
405 m summit forecast for wind, cloud, rain and temperature. Updated from the Thursday 6 August 2026 model run.
Seven-day Helm Crag forecast.
Conditions can change quickly with height. Use the day-by-day summit detail below, then check again close to departure.
A fine day on Helm Crag: summit wind broadly 5-20 mph, with gusts 15-25 mph around midday (fresh and blowy). Any cloud sits well above the tops (base 1000-1300 m) - clear summits. Little or no rain expected.
A fine day on Helm Crag: summit wind broadly 5-20 mph, with gusts 15-25 mph around midday (fresh and blowy). Any cloud sits well above the tops (base 500-3200 m) - clear summits. Little or no rain expected. Confidence moderate (ensemble members show a moderate spread) - the summit peak could reasonably be 11-19 mph, so treat the headline as mid-range. 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.
Cloud-free timing: Around 75% early, improving to around 100% later.
A fine day on Helm Crag: summit wind broadly 5-20 mph, with gusts 15-25 mph during the morning (fresh and blowy). Any cloud sits well above the tops (base 500-800 m) - clear summits. Cloud is likely to hang lowest on southwestern slopes; the northeastern side should see somewhat higher bases and better breaks. Little or no rain expected. Low confidence (ensemble members are widely spread) - the summit peak could be anywhere from 9 to 23 mph; check again nearer the time.
Cloud-free timing: Around 75% early, improving to around 100% later.
A fine day on Helm Crag: summit wind broadly 0-15 mph, with gusts 10-20 mph early in the morning (a moderate breeze). Any cloud sits well above the tops (base 900-1600 m) - clear summits. Little or no rain expected. Bright spells with UV up to 5 - sunscreen on exposed skin. Low confidence (ensemble members are widely spread) - the summit peak could be anywhere from 7 to 20 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 fine day on Helm Crag: summit wind broadly 5-20 mph, with gusts 15-25 mph during the afternoon (a moderate breeze). Any cloud sits well above the tops (base 1200-3200 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 8 to 19 mph; check again nearer the time.
A fine day on Helm Crag: summit wind broadly 10-20 mph, with gusts 15-25 mph around midday (a moderate breeze). Any cloud sits well above the tops (base 900-1200 m) - clear summits. Cloud is likely to hang lowest on southern slopes; the northern side should see somewhat higher bases and better breaks. Little or no rain expected. Bright spells with UV up to 5 - sunscreen on exposed skin. Confidence moderate (ensemble members show a moderate spread) - the summit peak could reasonably be 9-17 mph, so treat the headline as mid-range. 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 run: 2026-08-06
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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.