Snowdonia National Park Forecast

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

Viewing Weather Forecast for Saturday 16th February 2019
Forecast last updated on Friday 15th February 2019 at 2:53pm

Today | Sunday | Monday

Summary for all mountain areas

Drizzly rain across the W/NW Highlands in the morning will fizzle out, and cloud bases will tend to lift. Best breaks toward the Cairngorms. For England & Wales, low cloud mostly focused around Irish Sea coasts, but extensive in south Wales. Blustery winds, gales widely into evening.

Headline for Snowdonia National Park

Some low cloud and drizzle. Windy, gales western tops.

How windy? (On the summits)

South to southwesterly, 30 to 40mph, at times 45mph Snowdon range, strengthening into afternoon. Widely gale force on hills into the evening and night.

Effect of wind on you?

Blustery on higher areas much of the day, at times walking arduous in places, with local very gusty conditions around passes and cols.

How Wet? (Precipitation and its impact)

Isolated drizzle

Isolated patches of fine drizzle on hills nearest west coast, may become locally persistent before dusk.

Cloud on the hills?

May persist western hills, breaks forming elsewhere.

Cloud may well be extensive across hills nearest the Irish Sea above about 400-600m much of the day. Inland may lift and break to higher tops through the day. East Wales may see substantial clearances.

Chance of cloud free summits?

30% near west coast; 60% inland/east.

Sunshine?
Air clarity (below cloud)

Glimpses of the sun, mainly across eastern areas and north of the A5. Tending to cloud over from south into afternoon. Visibility fairly good, but slight haze.

How Cold? (at 900m)

4 to 6C. Where exposed to strongest wind, feeling closer to -7C.

Freezing Level

Above the summits

Planning Outlook

All mountain areas of Britain from Sunday 17th February 2019

South to southwesterly winds continue through the weekend into next week, eventually becoming southeasterly. For 36-48 hours Monday-Tuesday, freezing levels will drop to 900m or briefly lower, with showers of snow or hail on the mountains, focused western Scotland. By midweek, temperatures will lift again, as high pressure rebuilds to the east of Britain. Dry conditions likely to prevail for several days. A thaw will resume, leaving very little snow in general on the mountains. Some low cloud, with inversion conditions some days. Often windy, gale force at times, and locally very gusty.

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