Snowdonia National Park Forecast

The Snowdonia National Park.

Viewing Weather Forecast for Thursday 18th December 2014

Today | Friday | Saturday

Forecast last updated on Wednesday 17th December 2014 at 1:51pm

Summary for all mountain areas

Widespread upland gales, strongest in Snowdonia. Extensive low cloud and persistent rain, particularly western mountains south from Loch Lomond. Frequent snow showers north-west Scotland, but largely dry in the eastern Highlands.

Headline for Snowdonia National Park

Severe upland gales. Low cloud and persistent rain. Streams flooded.

How windy? (On the summits)

Westerly 50 to 70mph, and to the east of major ridges there may be very strong gusts to low levels.

Effect of wind on you?

Walking very difficult from lower slopes and any mobility difficult where exposed higher up. Severe wind chill.

How Wet?

Widespread rain

Rain falling frequently throughout the day; heaviest and most persistent western mountains. Very wet underfoot, and many streams in flood.

Cloud on the hills?

Extensive low cloud

Cloud blanket across the hills to lower slopes although a few breaks above 650m eastern hills.

Chance of cloud free summits?

Almost nil west; 10% east

Sunshine and air clarity?

Sunshine not expected. Hazy, and extensively foggy across the hills.

How Cold? (at 900m)

6C.

Freezing Level

Above the summits.

Planning Outlook

All mountain areas of Britain from Friday 19th December 2014

Frequent upland gales through to Christmas, particularly Scottish Highlands, although a lull developing during Saturday as a transient ridge of high pressure crosses the British Isles. Precipitation almost daily, particularly western mountains. Freezing levels rising above most mountain tops on Sunday as rain moves through, then frequent below freezing on Scottish summits next week. Elsewhere, most precipitation rain with freezing levels often above higher tops (although 600-800m Friday & Saturday). Signs of turning widely colder post-Christmas.

In association with
Mountaineering Council of Scotland sportscotland Association of Mountaineering Instructions