Snowdonia National Park Forecast

Also includes higher summits south to Plynlimon.

Viewing Weather Forecast for Monday 19th March 2018
Forecast last updated on Monday 19th March 2018 at 8:54am

Today | Tuesday | Wednesday

Summary for all mountain areas

High pressure will bring a cold and dry day to most mountain areas with just a few residual snow flurries here and there; these mostly across eastern hills. Strong to gale force northeasterly winds across Wales will give severe wind chill. Least wind northwest Scotland.

Headline for Snowdonia National Park

Another cold day with significant chill. Largely dry.

How windy? (On the summits)

Northeasterly. Will drop from around 45mph, 55mph highest tops, after dawn towards 30 or 35mph by mid or late afternoon.

Effect of wind on you?

Walking difficult with significant wind chill on higher areas, although conditions will ease slowly.

How Wet?

Precipitation not expected

Cloud on the hills?

Very little if any

Chance of cloud free summits?


Sunshine and air clarity?

Occasional sunshine, mainly western summits south of Snowdon. Excellent or superb visibility.

How Cold? (at 900m)

-6C rising gradually to -3C through daylight. Will feel closer to -23C in direct exposure to wind.

Freezing Level

Terrain from valleys up frozen after dawn. Lower slopes will begin to thaw, by late afternoon up toward 500m.

Planning Outlook

All mountain areas of Britain from Tuesday 20th March 2018

Cold and dry weather with light wind early in the week will give way, initially in Scotland, mid-week as winds turn westerly and rain (intermittently snow higher areas) begins to come in. Temporarily a thaw up to highest summits in Scotland. By next weekend, frequent precipitation, but on highest summits in England and Wales and widely Scottish highlands, temperatures will frequently revert back to below freezing point.

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