Snowdonia National Park Forecast

The Snowdonia National Park.

Viewing Weather Forecast for Saturday 23rd August 2014

Today | Sunday | Monday

Forecast last updated on Friday 22nd August 2014 at 4:23pm

Summary for all mountain areas

A cool north-westerly breeze continues, still feeling chilly for August. Scattered showers, in the morning mostly northern Scotland, and also Wales. By afternoon, risk of a cluster of perhaps thundery showers Borders & Pennines.

Headline for Snowdonia National Park

Showers clearing; cloud slowly lifting in west. Cool breeze.

How windy? (On the summits)

Northwesterly, typically 15mph, but may reach 20mph early morning, particularly Snowdon Range.

Effect of wind on you?

Small.

How Wet?

Scattered showers

A few scattered showers during the morning, mostly becoming confined toward the east by midday or early afternoon, then largely clearing away to south-east.

Cloud on the hills?

Many summits cloud free

Cloud will shroud coastal areas above 700 to 900m, but by afternoon, cloud often above the summits. Well inland, cloud soon almost all above the summits.

Chance of cloud free summits?

60% morning toward north & west; otherwise 90%.

Sunshine and air clarity?

Bright sunshine - most widely in morning well inland. Excellent or superb visibility.

How Cold? (at 900m)

5C; rising to 8C well inland. Remaining particularly cold for August.

Freezing Level

Just above the summits; but slight frost until after dawn in valleys and corries well inland.

Planning Outlook

All mountain areas of Britain from Sunday 24th August 2014

Until Sunday night, cold on the mountains - and also at night in many valleys with ground frost some nights. Scotland: remaining substantially dry for several days ahead, the air very clear and many summits free of cloud. Atlantic fronts threaten by about Wednesday, bringing increasing wind, cloud and rain to particularly western mountains. England and Wales: fine on Sunday until rain edges into Wales late on. Then rain and areas of low cloud on Monday as an Atlantic low crosses southern Britain, improving on Tuesday.

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