Snowdonia National Park Forecast

The Snowdonia National Park.

Viewing Weather Forecast for Thursday 26th November 2015
Forecast last updated on Wednesday 25th November 2015 at 12:44pm

Today | Friday | Saturday

Summary for all mountain areas

Very extensive low cloud and patches of drizzly rain over the Atlantic will envelop most mountain areas, the cloud base lifting progressively inland. Some eastern mountains will clear. Rain will become most persistent W & NW Highlands. Upland gales Scottish Highlands.

Headline for Snowdonia National Park

Blustery higher areas Snowdon range. Almost unbroken low cloud.

How windy? (On the summits)

Northwest backing westerly, 15 to 20mph, although perhaps 25mph intermittently higher tops Snowdon range.

Effect of wind on you?

Fairly small.

How Wet?

A little drizzle west

Small amounts of drizzle, mainly on western hills, locally persistent over an hour or two. Substantially dry toward east.

Cloud on the hills?

Extensive, lowest base west

A blanket of low cloud, base 300m or lower coastal slopes. The cloud base rising to 500 to occasionally 700m eastern summits.

Chance of cloud free summits?

Almost nil; but 10% east

Sunshine and air clarity?

Glimpses of hazy sun toward east. Fog across most of region. Hazy below cloud on lower slopes - though often very good visibility east.

How Cold? (at 900m)

4 rising to 6C.

Freezing Level

Above the summits.

Planning Outlook

All mountain areas of Britain from Friday 27th November 2015

A week or fortnight of frequent upland gales and sometimes storm force winds, and particularly on western mountains precipitation at some stage almost daily. Considerable rainfall in total will fall across the W & NW Highlands. There will be a series of freeze-thaw cycles on the Scottish Munros (allowing snow to accumulate on higher areas), whilst further south, higher summits will occasionally be below freezing point, but lying snow fairly transient.

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