Snowdonia National Park Forecast

The Snowdonia National Park.

Viewing Weather Forecast for Monday 31st August 2015
Forecast last updated on Sunday 30th August 2015 at 4:19pm

Tomorrow | Tuesday | Wednesday

How windy? (On the summits)

Northerly 5 to 10mph. Will strengthen slowly afternoon toward 15, possibly 20mph by dusk.

Effect of wind on you?


How Wet?

Brief showers

Low confidence: Overnight rain will either have cleared, or over a few hours will clear western hills. But could linger into the afternoon eastern areas. Otherwise, just a few showers.

Cloud on the hills?

Very little by midday

Cloud likely to shroud the hills, perhaps extensively in morning, but the base will gradually lift above most summits. It may be into afternoon before the cloud lifts off highest areas of the Snowdon range and also eastern areas.

Chance of cloud free summits?

20% rising to 70% through the day

Sunshine and air clarity?

Sunshine intermittently, mainly coastal hills. Excellent visibility, although higher areas may be foggy for some hours.

How Cold? (at 900m)


Freezing Level

Above the summits.

Planning Outlook

All mountain areas of Britain from Tuesday 1st September 2015

High pressure will dominate the weather over the coming week, possibly two weeks. But this week, its position, just west of Britain will ensure persistent cold conditions in northerly winds, bringing frost to some valleys at night, and highest Scottish summits close to freezing point. It will become substantially dry, but frequently cloudy although away from N Scotland. Most of the cloud will be above the summits. Frequently superb visibility.

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