Snowdonia National Park Forecast

The Snowdonia National Park.

Viewing Weather Forecast for Saturday 29th August 2015
Forecast last updated on Friday 28th August 2015 at 4:00pm

Today | Sunday | Monday

Summary for all mountain areas

Upland winds will approach gale force Scottish Highlands, and showers or in NW Highlands frequent or for periods constant rain. Less windy elsewhere, a few showers, although many areas dry.

Headline for Snowdonia National Park

Blustery, particularly Snowdon range; risk showers.

How windy? (On the summits)

South or southwesterly, 25mph, but 30mph higher tops Snowdon range.

Effect of wind on you?

Will impede ease of walking on higher areas Snowdon range.

How Wet?

Isolated showers

A few clusters of showers morning, mainly western hills, then showers isolated and well inland.

Cloud on the hills?

Clearing for several hours

Cloud base widely rising to 1000m or above by late morning. But between Porthmadog and Snowdon, cloud may be much lower, between 450 and 650m, lowest morning.

Chance of cloud free summits?

80% by midday

Sunshine and air clarity?

Sunshine will very likely fade as high level cloud thickens. Visibility excellent.

How Cold? (at 900m)

8, rising toward 10C

Freezing Level

Above the summits.

Planning Outlook

All mountain areas of Britain from Sunday 30th August 2015

A lengthy showery period until about the middle of next week. However, as the wind turns northerly from Monday, cloud base will often lift above the summits and the air will be very clear indeed, giving superb views. Winds will also be fairly light. Not warm: some valleys will have slight frost at night. Later next week, rain, if any, will become rare, but particularly valley temperatures will remain low at night.

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