Snowdonia National Park Forecast

The Snowdonia National Park.

Viewing Weather Forecast for Thursday 21st August 2014

Tomorrow | Friday | Saturday

Forecast last updated on Wednesday 20th August 2014 at 3:49pm

How windy? (On the summits)

West or southwesterly 15-20mph mid-morning to 25-35mph late afternoon; strongest winds in ranges will be on the Snowdon range.

Effect of wind on you?

Small morning, but from northwest, buffeting will become widespread on the hills.

How Wet?

Showers; more widespread rain toward evening

Scattered showers, mainly coastal hills in morning. Toward or during evening, rain will set in Snowdon area, and extend slowly southeast.

Cloud on the hills?

Increasingly extensive; particularly west

Cloud may clear particularly eastern areas for a few hours. But overall extensive cloud above 800-1000m, and slowly the base dropping toward 400m, westernmost areas, and 650m east.

Chance of cloud free summits?

20% west to 70% east - dropping afternoon

Sunshine and air clarity?

Occasional sunshine, mainly east in morning. Mostly very good or at first excellent visibility, but increasingly hazy and foggy on higher areas.

How Cold? (at 900m)

6C

Freezing Level

Above summits

Planning Outlook

All mountain areas of Britain from Friday 22nd August 2014

Until Sunday night, cold on the mountains - and also at night in many valleys with ground frost some nights. The air very clear and many summits free of cloud; although there will be showers - these dying out through the weekend when the wind will gradually drop away. Rain and areas of low cloud will come in on Monday as an Atlantic low approaches and then crosses Britain. However, the rain may largely miss the NW Highlands. Through the week, generally unsettled, with further rain from time to time.

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