Snowdonia National Park Forecast

Also includes higher summits south to Plynlimon.

Viewing Weather Forecast for Wednesday 27th July 2016
Forecast last updated on Tuesday 26th July 2016 at 3:08pm

Today | Thursday | Friday

Summary for all mountain areas

Substantially dry on many mountains, with cloud gradually lifting off the summits. However, drizzly conditions and very low cloud will only slowly clear in south Wales. Windy, wet weather with persistent very low cloud will also affect the NW Highlands and much of Lochaber.

Headline for Snowdonia National Park

Extensively fine; cloud lifting to clear most or all summits.

How windy? (On the summits)

Westerly, 10 to 15mph - although up to 30mph temporarily post dawn well inland.

Effect of wind on you?

Soon negligible

How Wet?

Intermittent rain

Overnight rain may persist briefly after dawn, before clearing to a few drizzly showers on western hills. By mid or late morning, dry everywhere.

Cloud on the hills?

Extensive at first, but improving with most summits clearing

Blanket cloud across the mountains pre-dawn will then begin to lift slowly. By late morning, most cloud confined to highest tops, and then summits often cloud free.

Chance of cloud free summits?

Almost nil at first; 80% by midday

Sunshine and air clarity?

Patchwork of sunshine developing afternoon. Visibility excellent.

How Cold? (at 900m)


Freezing Level

Above the summits.

Planning Outlook

All mountain areas of Britain from Thursday 28th July 2016

Little change in the general weather pattern: westerly winds will continue to bring extensive cloud and intermittent rain to particularly western mountains. However, from Friday until Monday the wind will be more northwesterly, bringing showers, but overall on many western mountains, relatively low rainfall in total. Cloud base will often be much higher than recently, particularly around the Irish Sea.

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