Snowdonia National Park Forecast

The Snowdonia National Park.

Viewing Weather Forecast for Wednesday 25th November 2015
Forecast last updated on Wednesday 25th November 2015 at 12:44pm

Today | Thursday | Friday

Summary for all mountain areas

A warm front will make slow progress inland onto western mountains bringing extensive low loud and rain on and off. Elsewhere, cloud higher tops N Scotland (as far south as Cairngorms) but otherwise fine and intermittently sunny. Upland winds widely near gale force.

Headline for Snowdonia National Park

Upland winds approaching gale force. Low cloud and drizzly.

How windy? (On the summits)

Northwesterly 30 to 40mph.

Effect of wind on you?

Walking impeded, risk considerable buffeting and significant wind chill higher areas.

How Wet?

Drizzly showers

Areas of light rain and drizzle coming in off the Irish Sea, most widely Snowdon range & Carnedd plateau, possibly sleet higher summits. Will amount to very little south of Bala to Barmouth.

Cloud on the hills?

Extensive north & west

North of the A5, and all Snowdon range, cloud widely forming above 400 to 600m, and at times toward the coast increasingly at 300m. Elsewhere, cloud rare below 550m, and most cloud above 700m.

Chance of cloud free summits?

Less than 10% coastal areas to 70% mid-Wales

Sunshine and air clarity?

Glimpses of sun, mostly eastern ands southern hills. Mostly excellent visibility, patchy fog some western tops.

How Cold? (at 900m)

1 or 2C.

Freezing Level

Above the summits.

Planning Outlook

All mountain areas of Britain from Thursday 26th November 2015

A leek or fortnight of frequent upland gales and particularly on western mountains precipitation at some stage almost daily. However, Wales and S Pennines will become largely dry for 2 or 3 days over the coming weekend. There will be freeze-thaw cycles on the Scottish Munros, whilst further south, higher summits will occasionally be below freezing point.

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