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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.

Today's Forecast

Windy, walking impeded
Sunshine and showers
Chilly

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Click here to download the latest PDF Last Updated Wed 22nd Oct 25 at 4:25PM Last Updated Wed 22nd Oct 25 at 4:25PM
View our low-graphics version Last Updated Wed 22nd Oct 25 at 4:25PM Last Updated Wed 22nd Oct 25 at 4:25PM

Viewing Forecast For

Eryri / Snowdonia National Park
Thursday 23rd October 2025
Last updated Wed 22nd Oct 25 at 4:25PM

Summary for all mountain areas

Areas of rain and strong winds within a large area of low pressure, will circulate across Britain. However, although varied, many mountain areas, particularly mainland Scotland and NW England, between low pressure centres will experience relatively light wind and hardly any rain.

Headline for Eryri / Snowdonia National Park

Windy; rain on and off - least wet mid and east Wales.

How windy? (On the summits)

Northwesterly, 30 to 40mph.

Effect of the wind on you?

Considerable wind chill and buffeting, particularly on higher tops.

How Wet?

Showers; the rain perhaps frequent over a couple of hours.

Risk early in the day of constant rain east Wales. Otherwise showery, the rain most frequent west Wales, where risk of it setting in for an hour or two

Cloud on the hills?

Base rising, but unlikely to clear higher areas Snowdon range

Often capping higher slopes, varying in and out of showers. Higher breaks more frequent well inland and eastern areas.

Chance of cloud free summits?

10% Snowdon range, but elsewhere by afternoon 60%

Sunshine and air clarity?

Some bursts of sun, mainly mid and east Wales. Visibility very good or perhaps in mid Wales excellent.

How Cold? (at 900m)

3C. In stronger winds, chill factor feeling like -8C.

Freezing Level

Close to highest summits above 1000m.

Viewing Forecast For

Eryri / Snowdonia National Park
Friday 24th October 2025
Last updated Wed 22nd Oct 25 at 4:25PM

How windy? (On the summits)

Westerly 25 to 40mph. May well ease markedly for several hours centred on early afternoon.

Effect of the wind on you?

Be prepared for arduous conditions with significant wind chill and buffeting for periods.

How Wet?

Clusters of showers

Clusters of showers, some heavy, will edge in from the west through the day. May give frequent rainfall across western mountains.

Cloud on the hills?

Fairly extensive

Hill fog likely fairly extensive above 600-800m, with perhaps occasional patches to lower slopes. Breaks to the tops likely to be rather fleeting away from east Wales.

Chance of cloud free summits?

30%

Sunshine and air clarity?

Glimpses of sun through high cloud between the showers. Visibility often poor due to rain.

How Cold? (at 900m)

3C, but feeling more like sub -5C in direct exposure to the strongest winds.

Freezing Level

Above the summits

Viewing Forecast For

Eryri / Snowdonia National Park
Saturday 25th October 2025
Last updated Wed 22nd Oct 25 at 4:25PM

How windy? (On the summits)

North-westerly 25 to 40mph

Effect of the wind on you?

Be prepared for very blustery and gusty conditions with significant wind chill and buffeting.

How Wet?

Frequent showers, snow tops.

Shower after shower will likely feed in from Irish Sea, forming shower bands where precipitation becomes near constant. Snow falling over high tops.

Cloud on the hills?

Fairly extensive higher slopes

Cloud likely to cap tops in fog often, most widely Snowdon Range and western coastal hills. Further inland and south, cloud breaking off the tops for periods.

Chance of cloud free summits?

30%

Sunshine and air clarity?

Bursts of sun, mostly widely in the south. Visibility very good out of showers, but poor or very poor in precipitation.

How Cold? (at 900m)

1C, but feeling closer to -10C in the wind.

Freezing Level

1000m

Planning Outlook

A cold weekend; higher summits close to freezing point in England and Wales and below in Scotland. Substantially dry on many mountains but areas of frequent showers (hail and snow), mainly NW and W Highlands (where wind close to gale on Saturday) and north and west Wales. Some uncertainty for Sunday afternoon with threat of rain setting in on many western mountains - ahead of a less cold but often windy and wet few days.