Eryri (Snowdonia) mountain weather forecast.

Yr Wyddfa, the Glyderau and the Carneddau. Height-aware guidance for wind, cloud, rain and temperature.

Choose your hills and day.

Each regional brief uses a high-ground level that suits the terrain—from 500 m on Dartmoor and in the Peak District to 900 m in the highest ranges.

Mountain Weather brief

Eryri (Snowdonia)

Monday 24 August 2026 · Yr Wyddfa, the Glyderau and the Carneddau

Confidence: Medium

Why: This is a short-range forecast, but its detailed model-agreement check is not available; check the stated ranges and hazards.

What matters most

A blustery easterly wind is the main concern. Expect mostly dry conditions, with many tops staying clear.

High-ground wind · 900 m30 mph easterly Gusts · 900 m45 mph Cloud base1900-2000 m Feels like · 900 m8°C

High-ground wind (900 m)

Easterly around 30 mph at 900 m. Gusts reaching around 45 mph at 900 m, with locally higher values possible on the most exposed tops. Starting nearer 15 mph, then strengthening toward 20 mph later.

Walking impact

Blustery on exposed ridges and liable to affect balance at times.

Rain and showers

Mostly dry.

Cloud-free summits

Around 100%.

Cloud and visibility

Cloud bases mostly around 1900-2000 m. Bases should tend to lift as the day goes on. Many higher summits should stay clear, with useful views for much of the day.

Temperature and wind chill

Around 11°C at 900 m, feeling like 8°C in the wind.

Freezing level

Above the summits.

Daylight

Sunrise 06:11 — Sunset 20:24 — about 14.2 hours daylight.

Updated 24 August 2026 at 04:40 UTC. How this forecast is produced.

Stay near Eryri (Snowdonia).

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Forecasts built around recognisable hill country.

Twenty distinct regions replace inherited service boundaries. Each uses a representative height suited to its terrain; named summits retain their exact height and exposure.