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Eryri / Snowdonia National Park Forecast

Eryri / Snowdonia National Park

Includes all summits in the the northern half of Wales from Pumlumon northwards.

Tuesday's Forecast

Moderate breeze, locally gusty
Snow flurries
Cold
Terrain widely frozen

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Click here to download the latest PDF Last Updated Mon 10th Feb 25 at 12:23PM Last Updated Mon 10th Feb 25 at 12:23PM
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Viewing Forecast For

Eryri / Snowdonia National Park
Tuesday 11th February 2025
Last updated Mon 10th Feb 25 at 12:23PM

Summary for all mountain areas

Windy and cold with most mountain terrain frozen. Snow will accumulate slowly over many eastern mountains although rain lower slopes Scottish Borders southwards. A few flurries will reach western mountains, where in places cloud will break to give a little sunshine.

Headline for Eryri / Snowdonia National Park

Snow furries, mainly east. Higher terrain frozen.

How windy? (On the summits)

Northeasterly; typically 15mph but sometimes 20mph higher tops N Wales. Mostly 10mph mid Wales.

Effect of the wind on you?

Small.

How Wet?

Risk snow flurries

Extensively dry but risk of snow flurries (light rain lower slopes), mainly east Wales.

Cloud on the hills?

Most summits cloud covered

Persistent fog east and mid Wales above about 450 to in afternoon 600m. The cloud mostly above 700m toward the Snowdon range and could lift to 900m or break up occasionally.

Chance of cloud free summits?

10%

Sunshine and air clarity?

Little or no sunshine although some sun on slopes nearest the coast. Mostly good visibility although a haze.

How Cold? (at 900m)

-3C

Freezing Level

600m.

Viewing Forecast For

Eryri / Snowdonia National Park
Wednesday 12th February 2025
Last updated Mon 10th Feb 25 at 12:23PM

How windy? (On the summits)

Easterly or variable in direction 15mph.

Effect of the wind on you?

Small or less

How Wet?

Precipitation unlikely

Risk isolated snow flurries.

Cloud on the hills?

Becoming confined to or above higher tops

Cloud base may be around 450 to 600m at least in east Wales from dawn. May well improve, perhaps markedly, in the afternoon most cloud above 750 to 900m - possibly clearing higher tops.

Chance of cloud free summits?

50%

Sunshine and air clarity?

Patches of sun developing, mainly west Wales. Good visibility but a haze.

How Cold? (at 900m)

-2C, may rise to 0C.

Freezing Level

600m, possibly rising as high as 900m (poorly defined freezing level as temperature drops only slowly with height).

Viewing Forecast For

Eryri / Snowdonia National Park
Thursday 13th February 2025
Last updated Mon 10th Feb 25 at 12:23PM

How windy? (On the summits)

Southeasterly, typically 25mph. In places a very gusty 30 to locally 40mph.

Effect of the wind on you?

Will impede ease of walking on most higher areas. In places sudden strong gusts will unbalance you. Notable wind chill.

How Wet?

Substantially or completely dry

Small risk of a little light snow.

Cloud on the hills?

Clearing most summits: highest summits may not clearing

Cloud base typically 750-900m, generally lowest east Wales. May well frequently lift above summits north from Cader Idris.

Chance of cloud free summits?

60%

Sunshine and air clarity?

Occasional sun. Good visibility although a haze.

How Cold? (at 900m)

-4C. Due to wind chill will feel around -13C.

Freezing Level

500m.

Planning Outlook

Remaining cold with nearly all mountain terrain frozen for the next week or perhaps longer. Total precipitation will be small, although one or two further periods where snow showers or flurries will reach mainly eastern mountains, whilst occasionally winds strengthen and a threat of precipitation on western mountains as Atlantic fronts temporarily make progress toward western Britain.