Mountain Weather
Information Service
Brecon Beacons Forecast

Brecon Beacons

Includes all higher summits in the southern half of Wales: the Bannau Brycheiniog / Brecon Beacons National Park, southern Cambrian Mountains and highest Preseli hills.

Today's Forecast

Moderate breeze, locally gusty
Patchwork of cloud and sun
Warm

Click an icon for more information or click here for a key to all icons.

Click here to download the latest PDF Last Updated Sun 26th Jul 26 at 4:18PM Last Updated Sun 26th Jul 26 at 4:18PM
View our low-graphics version Last Updated Sun 26th Jul 26 at 4:18PM Last Updated Sun 26th Jul 26 at 4:18PM

Viewing Forecast For

Brecon Beacons
Monday 27th July 2026
Last updated Sun 26th Jul 26 at 4:18PM

Summary for all mountain areas

Fresh to strong west to southwesterly winds, rather cool on Scottish tops. Rain and drizzle frequent in western Scotland, patchier eastwards. Some drizzly rain for Lakes and north Wales. Low cloud affecting most western hills, higher bases eastwards.

Headline for Brecon Beacons

Breezy. Cloud filling in western hills, largely dry.

How windy? (On the summits)

Northwesterly at dawn, soon westerly 20 to 25mph, strongest sustained speeds toward mid-Wales.

Effect of the wind on you?

Fairly small, but noticeably breezy over higher terrain where rather cool in exposure.

How Wet?

A little drizzle west Wales

Occasional fine drizzle mostly western Cambrians, more persistent into the afternoon locally here. Largely dry much of Brecon Beacons NP and southeastern areas.

Cloud on the hills?

Breaks to tops then lowering from west

Varied banks of cloud at many elevations in the morning, mostly in the west, breaks to tops for several hours further south and east. Cloud banks tend to fill in onto hills from the west during afternoon above 600-800m.

Chance of cloud free summits?

70% dropping to 30%

Sunshine and air clarity?

Sun and fair weather cloud, trending cloudier into the afternoon. Very good visibility, reducing toward westernmost hills.

How Cold? (at 750m)

10C rising to 13 to 15C, warmest east, little change into night. Feeling like 3 to 6C directly in the wind on tops.

Freezing Level

Above the summits.

Viewing Forecast For

Brecon Beacons
Tuesday 28th July 2026
Last updated Sun 26th Jul 26 at 4:18PM

How windy? (On the summits)

Southwesterly 25 to 30mph, gusts 40mph around high tops mainly morning.

Effect of the wind on you?

Strenuous walking conditions over higher exposed terrain, buffeting gusts. Marked wind chill.

How Wet?

Some drizzle west

Patchy drizzle, most common western Cambrians. Very little further southeast.

Cloud on the hills?

Extensive, tending to lift

Banks of cloud covering hills particularly in west, perhaps fairly widely from 300-500m upward in morning, then base lifting with some breaks, clearing tops best in east.

Chance of cloud free summits?

20% rising to 50% west, 70% east.

Sunshine and air clarity?

Mostly cloudy, some brighter periods with glimpses of sun in east. Visibility good below cloud, but poor in west in drizzle.

How Cold? (at 750m)

14 to 17C, warmest eastern hills, feeling humid. Feeling like 5C directly in wind.

Freezing Level

Above the summits.

Viewing Forecast For

Brecon Beacons
Wednesday 29th July 2026
Last updated Sun 26th Jul 26 at 4:18PM

How windy? (On the summits)

South to southwesterly 20 to 25mph, gusty at times.

Effect of the wind on you?

Breezy on the hills, more noticeable in places, but fairly small effect on walking.

How Wet?

Local drizzle, chance a shower

Some drizzle around low cloud on coastal hills in west Wales. A low chance of an isolated thundery burst of rain inland/east later in day.

Cloud on the hills?

Mostly coastal hills

Cloud banks to lower elevations on coastal hills in west, tending to thin but may linger around some slopes all day. Eastern hills may see odd patches, largely clearing.

Chance of cloud free summits?

30% west coast, to 80% east Wales.

Sunshine and air clarity?

Locally cloudy and misty in west, may improve. Otherwise strong sun and varied high cloud, visibility very good.

How Cold? (at 750m)

14C rising to 17C, possible 20 to 22C eastern areas. Valleys rise to 25C, chance of nearer 30C east Wales; quite humid.

Freezing Level

Above the summits.

Planning Outlook

Southwesterly winds will bring rain to most places early this week, some more prolonged heavier falls for western Scotland into Tuesday, accompanied by gales over high terrain, severe on Scottish tops, but rather humid for all, warm for England and Wales. Cooler air toward northwest Scotland moves across all of Scotland by Wednesday. Showery rain through mid-late week, some heavy and possibly thundery bursts, mainly Scotland. Likely drier for Wales and southern Pennines. Remaining very uncertain detail toward next weekend and early the following week, but indications favour a broad zone of low pressure bringing areas of rain and heavy showers through early August.