Snowdonia National Park Forecast

The Snowdonia National Park.

Viewing Weather Forecast for Friday 31st July 2015
Forecast last updated on Friday 31st July 2015 at 7:21am

Today | Saturday | Sunday

Summary for all mountain areas

A little rain here and there, mainly or only N England northwards, before from west across Scotland, rain becomes more frequent. Becoming windy, western mountains of Scotland in particular. Light wind all day S Pennines and mid-Wales southwards.

Headline for Snowdonia National Park

Rain rare if any. Increasingly windy afternoon, especially Snowdon range.

How windy? (On the summits)

South or southwesterly 5 to 15mph morning, strengthening afternoon to 15 to 25mph. Strongest winds in ranges will be in the Snowdon area, where in evening may touch 30mph locally.

Effect of wind on you?

Small until late in day Snowdon area.

How Wet?

Rain unlikely

Small risk of a little light rain from high level cloud Snowdon range.

Cloud on the hills?

Mostly very little

Summits cloud free extensively after patchy cloud morning, particularly west. Cloud may lower further westernmost areas between Snowdon and Porthmadog evening.

Chance of cloud free summits?

60% west to 90% east

Sunshine and air clarity?

Occasional sunshine. Superb visibility.

How Cold? (at 900m)

6C; rising slowly, reaching 10C easternmost summits.

Freezing Level

Above the summits. Slight frost some valleys until after dawn.

Planning Outlook

All mountain areas of Britain from Saturday 1st August 2015

Continued mixed conditions over most mountain areas over the next week or more - although a slight rise in temperature. Often cloudy Scottish Highlands with rain at some stage almost daily, particularly western mountains. Widespread upland, or near upland gales, from Sunday night to Wednesday. Until Monday, often dry elsewhere, although on Saturday, some forecasts suggest a band of low cloud and occasional rain will linger across Wales (particularly the south) and perhaps the southern Pennines.

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