Snowdonia National Park Forecast

The Snowdonia National Park.

Viewing Weather Forecast for Wednesday 20th August 2014

Today | Thursday | Friday

Forecast last updated on Wednesday 20th August 2014 at 7:13am

Summary for all mountain areas

Remaining particularly cold for August. Showers, mostly toward northern and western coastal areas will tend to migrate inland during the day, although NW Scotland will be increasingly wet toward evening. Less windy overall.

Headline for Snowdonia National Park

A few showers, but locally frequent near north coast

How windy? (On the summits)

Northwesterly, 15mph.

Effect of wind on you?


How Wet?

Scattered showers

Generally just a few showers, generally migrating from hills near the coast to well inland in afternoon. But moderate to high risk of a narrow band of near constant showery rain north of A5 in morning.

Cloud on the hills?

Mostly or all clearing

Generally most or all summits becoming cloud free. Slowest to clear will be Snowdon range where summits will mostly or all clear afternoon. North of the A5, cloud likely locally below 500m for a few hours in morning.

Chance of cloud free summits?

20% northern Snowdon range morning; otherwise 90%

Sunshine and air clarity?

Patchwork of sunshine, although extensive cloud Snowdon range morning. Visibility excellent, although fog some higher areas mainly Carnedd plateau morning.

How Cold? (at 900m)

6 rising to 7C inland; remaining distinctly cold for August.

Freezing Level

Above the summits.

Planning Outlook

All mountain areas of Britain from Thursday 21st August 2014

Remaining cold on the mountains - and also at night in many valleys with ground frost some nights - until Sunday. The air very clear and many summits free of cloud during the day; although there will continue to be showers - these dying out through the weekend. Rain and areas of low cloud will come in early next week as an Atlantic low approaches and then crosses Britain.

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