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.
Wednesday's Forecast
Moderate breeze, locally gusty
A noticeable breeze, feeling cool where exposed on tops. Locally may be gusty, but unlikely to affect walking progress. 15-25mph.
Dry and sunny
Extensive sunshine. The mountains free of cloud once any early mist patches disperse.
Cool to mild
Air temperature 5 to 10C on higher terrain. Comfortable temperatures on lower terrain, but feeling chilly if exposed to wind higher up, especially if stationary. Pack extra layers.
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Moderate breeze, locally gusty
A noticeable breeze, feeling cool where exposed on tops. Locally may be gusty, but unlikely to affect walking progress. 15-25mph.
Dry and sunny
Extensive sunshine. The mountains free of cloud once any early mist patches disperse.
Cool to mild
Air temperature 5 to 10C on higher terrain. Comfortable temperatures on lower terrain, but feeling chilly if exposed to wind higher up, especially if stationary. Pack extra layers.
Viewing Forecast For
Brecon Beacons
Wednesday 18th March 2026
Last updated
Tue 17th Mar 26 at
3:05PM
Summary for all mountain areas
Patchy low cloud across many hills early, lifting and fading, particularly away from west coasts; sun breaking out. A weak front lingers over south Scotland, maintaining low cloud and some light spotty drizzle. Light wind, though a blustery morning in the north Scottish highlands; breezy in south Wales too.
Headline for Brecon Beacons
Some early low cloud clearing for sun; breezy in exposure
How windy? (On the summits)
South-southeasterly 20-30mph, some gustiness, including to lower slopes, at times reaching higher than 30mph.
Effect of the wind on you?
Walking impeded in exposure, strongest gusts will challenge balance.
How Wet?
No precipitation expected
Cloud on the hills?
Little expected
Some patchy fog on sheltered low slopes and valleys in the morning, lifting soon after sunrise and dissipating for clear hills.
Chance of cloud free summits?
90%
Sunshine and air clarity?
Mostly sunny. Very good visibility, some early haze.
How Cold? (at 750m)
8C from dawn (to 3C in valleys), lifting to 11C, staying elevated into night on upper slopes.
Freezing Level
Above the summits.
Viewing Forecast For
Brecon Beacons
Thursday 19th March 2026
Last updated
Tue 17th Mar 26 at
3:05PM
How windy? (On the summits)
East-southeasterly 10-15mph; may at times approach a gusty 20mph, particularly early in the day.
Effect of the wind on you?
Some inconvenient gusts early in the day but otherwise small effects.
How Wet?
No precipitation expected
Cloud on the hills?
Early valley fog dissipates for clear hills
Patches of fog in sheltered valleys in the morning, most common in east and mid-Wales. Fog begins to lift upslope after sunrise, soon dissipating for cloud-free hills.
Chance of cloud free summits?
90%
Sunshine and air clarity?
Extensive sunshine. Good visibility but hazy, particularly east hills.
How Cold? (at 750m)
9 to 11C, mildest in the far west.
Freezing Level
Above the summits.
Viewing Forecast For
Brecon Beacons
Friday 20th March 2026
Last updated
Tue 17th Mar 26 at
3:05PM
How windy? (On the summits)
Easterly 10 to 15mph, some gustier spots may develop.
Effect of the wind on you?
Small.
How Wet?
Precipitation not expected
Cloud on the hills?
Mostly little
Patchy fog in valleys from dawn, possible patchy cloud forming around some hill slopes for a time, mostly eastern areas, but tending to lift above tops or largely disperse into middle of day.
Chance of cloud free summits?
80%
Sunshine and air clarity?
Sun and thin cloud. Visibility very good, some haze lower down.
How Cold? (at 750m)
Around 6C, some cooler spots at first, then some slightly warmer spots by afternoon.
Freezing Level
Above the summits, but slight frost in valleys and some sheltered higher areas at dawn.
Planning Outlook
Fairly widely settled conditions across the country later this week. Some cloud and spotty light rain lingers in north England/south Scotland for a few days, elsewhere becoming mostly sunny; valley fog in many lowland areas early, lifting and dissipating after sunrise for clear hills. Generally milder temperatures and light wind but the occasional stronger gust. The weekend is anticipated to be settled as well, with a mix of cloud and sun, early low cloud lifting and clearing many mountains, only occasional spots of rain in the far northwest of Scotland. A spell of more unsettled weather expected next week, with stronger wind, precipitation, and colder temperatures.