Brecon Beacons Forecast

Viewing Weather Forecast for Wednesday 20th June 2018

Also includes all higher summits in southern half of Wales.

Today | Thursday | Friday

Forecast last updated on Tuesday 19th June 2018 at 4:07pm

Summary for all mountain areas

Fronts will clear slowly south-eastwards across England and Wales, bringing rain and low cloud for several hours, then becoming brighter from the north. Scotland sees scattered showers, these becoming heavier and more widespread later, of snow on highest summits.

Headline for Brecon Beacons

Rain and drizzle, fading slowly. Persistent low cloud.

How windy? (On the summits)

West or southwesterly; 30-35mph for several hours early morning, tending to ease toward 20mph, or less afternoon.

Effect of wind on you?

Buffeting across the hills at least for a few hours, slowly improving.

How Wet? (Precipitation and its impact)

Rain and drizzle mostly west

A little rain or drizzle on and off much of the day on hills west of Brecon (amounts fairly small), fading only slowly later. Very little reaching east Wales.

Cloud on the hills?

Extensive; lifting late in day

Widely shrouding the hills, perhaps most of the day, from lower slopes up west & south of Brecon, and 500-600m mid-Wales. Most cloud often above 600m toward Black Mountains. Cloud base beginning to lift toward evening.

Chance of cloud free summits?

10% west; 40% east.

Sunshine?
Air clarity (below cloud)

Generally overcast. Visibility poor in rain, may slowly improve later; locally good east Wales.

How Cold? (at 750m)

7 to 10C; locally 12C some eastern hills in morning.

Freezing Level

Above the summits.

Planning Outlook

All mountain areas of Britain from Thursday 21st June 2018

High pressure builds from the west later this week to bring plenty of fair weather over the next week to 10 days. This weekend has a risk of patchy rain and low cloud for the north-western Highlands brought in on fresh westerly winds, otherwise it will be dry with many summits clear. Rather cool in the short term, but temperatures rising into next week, and eventually it may become widely hot and humid. By the end of June this may break into thunderstorms. Check our latest planning outlook video at mwis.org.uk, updated Tuesday and Friday.