Moel Hebog weather forecast.

783 m summit in Eryri (Snowdonia). Seven-day wind, cloud, rain and temperature forecast, updated 27 August 2026 at 04:40 UTC.

At a glance

Today on Moel Hebog.

Moel Hebog on Thursday 27 August 2026: summit wind around 33 mph SE, gusting 46 mph; modelled cloud-free summit for 43% of daylight; feels like 12°C; 7.1 mm rain.

Medium confidenceHow the forecast works

Seven-day Moel Hebog forecast.

Conditions can change quickly with height. Use the day-by-day summit detail below, then check again close to departure.

Medium confidence
Wind33 mph SE Gusts46 mph Feels12°C Rain7.1 mm Cloud-free summit43% Cloud base500 m Freezing level3,110 m Daylight06:17–20:17 · 14.0 h

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

Thunder risk: moderate

from late afternoon into the evening. Leave exposed summits and ridges if thunder develops.

Spate watch

Burns and unbridged crossings may rise quickly. Assess them at the water and turn back if unsure.

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

A wild day on Moel Hebog: summit wind broadly 15-35 mph, with gusts 40-50 mph around midday (gale-force winds). A meaningful thunderstorm risk is indicated from late afternoon into the evening. Avoid committing to exposed ridges if storms begin to build. There could be a spate risk based on forecast rainfall. Burns and unbridged crossings may rise quickly. Most likely from around 07:00 until around 17:00. Much calmer lower down - generally 5-15 mph in the valley, rising towards the tops. Cloud base around 3000–3300 m through the morning, lowering to 400–700 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 around midday. Some rain is likely, with around 5-10 mm indicated; timing and local totals remain uncertain.

Medium confidence
Wind24 mph W Gusts34 mph Feels10°C Rain5.7 mm Cloud-free summit0% Cloud base455 m Freezing level2,840 m Daylight06:19–20:15 · 13.9 h

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

Thunder risk: high

from early morning into the afternoon. Leave exposed summits and ridges if thunder develops.

Spate watch

Burns and unbridged crossings may rise quickly. Assess them at the water and turn back if unsure.

A grey, cloudy day on Moel Hebog: summit wind broadly 10-30 mph, with gusts 30-40 mph during the evening (strong winds). Thunderstorms are a significant hazard from early morning into the afternoon. Exposed summits and ridges are a poor choice while storms are nearby. 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 06:00 until around 20:00. Much calmer lower down - generally 5-15 mph in the valley, rising towards the tops. 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. 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 around 5-10 mm indicated; timing and local totals remain uncertain. Confidence moderate (forecast models agree on the walking impact of the wind) - the summit peak could reasonably be 17-27 mph, so treat the headline as mid-range.

Medium confidence
Wind19 mph SW Gusts27 mph Feels7°C Rain4.6 mm Cloud-free summit0% Cloud base464 m Freezing level2,924 m Daylight06:20–20:13 · 13.9 h

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

Thunder risk: moderate

from around midday into the evening. Leave exposed summits and ridges if thunder develops.

A grey, cloudy day on Moel Hebog: summit wind broadly 15-25 mph, with gusts 20-30 mph during the evening (fresh and blowy). A meaningful thunderstorm risk is indicated from around midday into the evening. Avoid committing to exposed ridges if storms begin to build. The ground is likely to be wet after recent rain. 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. 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.

Medium confidence
Wind36 mph SW Gusts50 mph Feels8°C Rain11.1 mm Cloud-free summit0% Cloud base478 m Freezing level2,684 m Daylight06:22–20:11 · 13.8 h

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

Thunder risk: likely

during the evening. Leave exposed summits and ridges if thunder develops.

Spate watch

Burns and unbridged crossings may rise quickly. Assess them at the water and turn back if unsure.

A rough, clagged-in day on Moel Hebog: summit wind broadly 20-40 mph, with gusts 45-55 mph during the evening (gale-force winds). Thunderstorms are forecast during the evening. Avoid exposed summits and ridges during the risk period. 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 00:00 until around 02:00 the following day. Much calmer lower down - generally 10-20 mph in the valley, rising towards the tops. Cloud base around 400–700 m in the morning, then around 600–900 m around midday and 400–700 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. Confidence moderate (Summit wind could be roughly 25-39 mph, which changes how difficult exposed walking may feel) - the summit peak could reasonably be 25-39 mph, so treat the headline as mid-range.

Medium confidence
Wind41 mph W Gusts57 mph Feels1°C Rain1.6 mm Cloud-free summit71% Cloud base935 m Freezing level1,882 m Daylight06:24–20:08 · 13.8 h

Forecast confidence: Summit wind could be roughly 35-50 mph, which changes how difficult exposed walking may feel.

Cloud-free timing: Cloudy early, clearing later.

A wild day on Moel Hebog: summit wind broadly 35-45 mph, with gusts 50-60 mph early in the morning (storm-force winds). The ground is likely to be wet after recent rain. Much calmer lower down - generally 15-25 mph in the valley, rising towards the tops. Cloud base around 400–700 m in the morning, lifting to 900–1200 m around midday and 1300–1600 m by late afternoon. Summit cloud should lift later, bringing a better chance of clear views. 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. Cold on top: air temperature broadly 6 to 10°C, feeling around -2 to 2°C in the wind - wrap up. Confidence moderate (Summit wind could be roughly 35-50 mph, which changes how difficult exposed walking may feel) - the summit peak could reasonably be 35-50 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.

Medium confidence
Wind26 mph NW Gusts37 mph Feels2°C Rain1.7 mm Cloud-free summit79% Cloud base1,209 m Freezing level1,771 m Daylight06:25–20:06 · 13.7 h

Forecast confidence: Rain is possible, but forecast models differ by about 12 hours on when it arrives.

Spate watch

Burns and unbridged crossings may rise quickly. Assess them at the water and turn back if unsure.

Cloud-free timing: Cloudy early, clearing later.

A mixed day on Moel Hebog: summit wind broadly 20-30 mph, with gusts 30-40 mph around midday (strong 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 02:00 until around 11:00. Some rain is likely, with up to around 2 mm indicated; timing and local totals remain uncertain. Bright spells with UV up to 5 - sunscreen on exposed skin. Confidence moderate (forecast models agree on the walking impact of the wind) - the summit peak could reasonably be 20-30 mph, so treat the headline as mid-range.

Forecast run: 2026-08-27

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