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.

Sunday's Forecast

Windy, walking impeded
Patchy rain or drizzle
Cool to mild

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

Click here to download the latest PDF Last Updated Sat 6th Jun 26 at 4:46PM Last Updated Sat 6th Jun 26 at 4:46PM
View our low-graphics version Last Updated Sat 6th Jun 26 at 4:46PM Last Updated Sat 6th Jun 26 at 4:46PM

Viewing Forecast For

Brecon Beacons
Sunday 7th June 2026
Last updated Sat 6th Jun 26 at 4:46PM

Summary for all mountain areas

Scotland: Strong and gusty south-westerly winds will drive hill fog and frequent rainfall across western mountains, setting in during afternoon. Rainfall patchier across eastern hills with higher bases. England and Wales: Windy with patchy light rain onto western hills, becoming more widely damp or wet through the day.

Headline for Brecon Beacons

Blustery with low cloud, gradually lifting to tops or above. May turn widely damp later.

How windy? (On the summits)

Southwesterly 25-35mph, gusty over tops, particularly early in the day; deteriorating, sustained speeds 35mph+ later.

Effect of the wind on you?

Ease of walking always affected, including to low slopes, more strenuous over tops where feeling chilly and deteriorating.

How Wet?

Little rain expected until late

A few spots of light rain here and there drifting from the southwest, perhaps a fine drizzle on the summits in the early hours, but most hills substantially dry. Late in the day, a broader area of rain will develop.

Cloud on the hills?

May cling to high terrain

Fairly extensive cloud above 600m in the morning, lowest bases to the southwest as low as 400m. Lifting with time, perhaps clearing most or all terrain, but a risk of caps clinging to the high summits.

Chance of cloud free summits?

Rising to 60%

Sunshine and air clarity?

Weak sunshine through high cloud, trending patchier through afternoon. Good visibility, though some haze west.

How Cold? (at 750m)

8C rising to 10C, or 11C east hills; less rise southwest areas. Feeling near freezing in strongest wind.

Freezing Level

Above the summits.

Viewing Forecast For

Brecon Beacons
Monday 8th June 2026
Last updated Sat 6th Jun 26 at 4:46PM

How windy? (On the summits)

Southwesterly 15 to 25mph.

Effect of the wind on you?

Fairly small effect on walking, but feeling blustery and a noticeable chill on exposed high terrain.

How Wet?

Rain then odd showers

A band of rain clears eastward early morning, then drier but a scattering of showers.

Cloud on the hills?

Breaks to tops

Varied cloud banks mostly western hills and higher tops in morning, lifting higher up with breaks best in east Wales.

Chance of cloud free summits?

50%

Sunshine and air clarity?

Occasional sun by middle of day. Visibility very good after early rain clears.

How Cold? (at 750m)

5 to 7C. Feeling below freezing directly in the wind.

Freezing Level

Above the summits.

Viewing Forecast For

Brecon Beacons
Tuesday 9th June 2026
Last updated Sat 6th Jun 26 at 4:46PM

How windy? (On the summits)

West to south-westerly 20 to 30mph, lifting to 35 to perhaps 40mph at times across the tops.

Effect of the wind on you?

Be prepared for very blustery conditions and a cold feel for the time of the year. Perhaps fairly arduous tops at times.

How Wet?

Frequent showers

Frequent precipitation through the day, in the form of shower after shower feeding in across the hills. Some hail mixed in with the risk of thunder inland.

Cloud on the hills?

Frequently covering tops

Fairly extensive above 500-700m at first, but bases rising to become mostly around 700-900m afternoon, affording some clearances of tops at times.

Chance of cloud free summits?

50%

Sunshine and air clarity?

Often cloudy, patchy sun best in the east. Visibility sometimes poor due to rain.

How Cold? (at 750m)

4C lifting to 7C

Freezing Level

Above the summits

Planning Outlook

The unsettled period of weather will persist over the coming week with low pressure area centres tracking just to the northwest of Scotland, allowing south-westerly winds to prevail. Rainfall often showery in nature, but coming in frequently to western mountains with the greatest falls for western Scotland. Chilly and windy at times; freezing level touching highest tops Scotland on Tuesday and Wednesday, when showers will fall as snow over the tops. Temperatures trending milder again next weekend, pressure may begin to rise in the south to give drier weather more widely.