Brecon Beacons Forecast

Also includes all higher summits in southern half of Wales.

Viewing Weather Forecast for Saturday 16th December 2017
Forecast last updated on Friday 15th December 2017 at 12:32pm

Today | Sunday | Monday

Summary for all mountain areas

Fine and sunny along the spine of Britain, but still snow showers N/NE Scotland. Some uncertainty western mountains as a weak front brings in low cloud and a little snow (rain lower slopes Wales), the extent and height of particularly the cloud is uncertain.

Headline for Brecon Beacons

Occasional snow; fog summits west Wales.

How windy? (On the summits)

North to northwesterly, 20 to 25mph, but perhaps 30mph occasionally higher tops.

Effect of wind on you?

Mostly fairly small

How Wet?

Occasional snow, or rain lower slopes

Light snow or on lower slopes rain now and again. Here and there, most likely west of Brecon and Llandrindod, the precipitation constant for an hour or two.

Cloud on the hills?

Extensive on higher tops

West of Brecon and Llandrindod: Cloud extensive above 700m and patches below 500m intermittently. Elsewhere: cloud rare below 650m and intermittently above most summits.

Chance of cloud free summits?

30% west of Brecon and Llandrindod to 70% elsewhere

Sunshine and air clarity?

Occasional sunshine mainly Black Mountains. Below could, intermittently good visibility, although a haze west Wales.

How Cold? (at 750m)

-1C; will tend to rise slowly through day (except summits east Wales) toward 1C before dusk.

Freezing Level

650 rising to 850m; highest west Wales afternoon. Higher terrain, and locally in valleys (after a frost) mostly frozen.

Planning Outlook

All mountain areas of Britain from Sunday 17th December 2017

Substantial snow loss next week, here may be little left by the end of the week England, Wales and S Scotland. There will be freeze thaw cycles Scottish Highlands - although the periods of thaw predominating. Most forecasts indicate frequent stormy, often wet conditions from Christmas as a series of deep Atlantic lows pass close to western Britain. Intermittently snow will fall, particularly Scottish Highlands. However, a small minority of indicators suggest much colder, drier conditions eventually returning.

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