Snowdonia National Park Forecast

The Snowdonia National Park.

Viewing Weather Forecast for Saturday 20th December 2014

Today | Sunday | Monday

Forecast last updated on Saturday 20th December 2014 at 12:08pm

Summary for all mountain areas

Severe upland gales widely after dawn, although slowly from west the wind will ease. Snow showers, mainly western mountains (and Cairngorms in morning) although on lower slopes, particularly S Scotland southwards, rain.

Headline for Snowdonia National Park

Upland gales easing. Snow showers.

How windy? (On the summits)

West or northwesterly, 50 at first in morning, easing slowly from the west, to 35mph into the afternoon.

Effect of wind on you?

Difficult walking conditions on higher areas; general mobility arduous in the morning. Severe wind chill.

How Wet?

Occasional snow showers

A scattering of showers, of snow above about 600m, may be frequent for a few hours toward the north in morning. Through the day, showers becoming increasingly rare.

Cloud on the hills?

Variable; occasionally clearing

Cloud base varied; occasionally 600m around showers, rarely clearing above 800-900m toward the west, but well inland many summits may clear.

Chance of cloud free summits?

30% higher northwestern tops to 70% elsewhere

Sunshine and air clarity?

Bursts of sunshine, perhaps developing widely toward east. The air very clear, but visibility occasionally deteriorating during showers.

How Cold? (at 900m)

0C. Will feel as cold as minus 15 Celsius directly in the wind in morning.

Freezing Level

850m

Planning Outlook

All mountain areas of Britain from Sunday 21st December 2014

The outlook for the Christmas period is complicated (to say the least). Over the last few days model forecasts have shown a significant bias toward cold conditions (very low freezing level) after Christmas. The timing and longevity of this is very uncertain: A significant minority of model forecasts suggest several very cold days toward New Year, whilst others bring milder conditions back in, at least intermittently. Until then frequent upland gales, rain, or in Scotland intermittently snow falling to lower slopes.

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