Snowdonia National Park Forecast

Viewing Weather Forecast for Friday 22nd March 2019

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

Tomorrow | Saturday | Sunday

Forecast last updated on Thursday 21st March 2019 at 4:36pm

How windy? (On the summits)

Southwesterly, 25 to 35mph; strongest across Snowdon Range where risk of 40mph for a time.

Effect of wind on you?

Generally arduous conditions, locally very gusty through passes and cols. Significant wind chill.

How Wet? (Precipitation and its impact)

Drizzly in the west, rain later in the day.

Patches of drizzle will come and go through the day across western hills. Steadier rain developing later in the afternoon as a cold front arrives from the northwest.

Cloud on the hills?

Extensive

Widely covering the hills, from lower slopes up toward west coast, and extensive above 500-800m elsewhere. Breaks to higher levels possible toward Berwyn mountains.

Chance of cloud free summits?

20-40%; highest in the east.

Sunshine?
Air clarity (below cloud)

Rare glimpses of sun mostly, east Wales. Visibility generally reduced by drizzle, but locally good east Wales.

How Cold? (at 900m)

Around 5C, but will lower to 0C into night.

Freezing Level

Above the summits, but will drop into night to 800m.

Planning Outlook

All mountain areas of Britain from Saturday 23rd March 2019

Colder conditions over the weekend with freezing levels ranging between 700 and 1000m. Snow or hail showers focused on W Scotland, becoming increasingly frequent through Sunday when another swathe of gales will affect the Highlands. Drier elsewhere, with just a few showers; these mainly across the Lakes and E Scotland. Into next week, higher pressure will extend across the UK bringing a period of quieter weather with lighter winds and occasional sunshine. Temperatures slowly rising by day, although frosts forming in the valleys/glens at night. Weak fronts may edge into W Scotland at times introducing some low cloud and drizzle here for a time.