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
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.
Patchy rain or drizzle
Rain on and off, or generally drizzly - total amounts small, but may be persistently damp, especially where hills are shrouded in cloud.
Hazy, some fog banks
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Visibility reduced around cloud banks, hazier on some lower slopes. Locally some improvements possible out of cloud.
Chilly
Air temperature typically 0 to 5C on higher summits. Feeling distinctly chilly on tops when stationary or where exposed to wind. Take appropriate 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.
Patchy rain or drizzle
Rain on and off, or generally drizzly - total amounts small, but may be persistently damp, especially where hills are shrouded in cloud.
Hazy, some fog banks
Visibility reduced around cloud banks, hazier on some lower slopes. Locally some improvements possible out of cloud.
Chilly
Air temperature typically 0 to 5C on higher summits. Feeling distinctly chilly on tops when stationary or where exposed to wind. Take appropriate layers.
Viewing Forecast For
Brecon Beacons
Sunday 8th March 2026
Last updated
Sat 7th Mar 26 at
1:08PM
Summary for all mountain areas
A blanket of low cloud and haze (particularly Pennines) over England, Wales and SW Scotland will spread to the Borders and S Highlands later in day - albeit cloud breaks in places. The Scottish highlands mostly fine albeit windy in the NW with chance of a little rain.
Headline for Brecon Beacons
Extensive fog, a little rain. Light wind.
How windy? (On the summits)
Southerly 15mph, but possibly 20mph west Wales.
Effect of the wind on you?
Small
How Wet?
Patches fine drizzle at times. Heavier rain briefly.
Fine drizzle mainly Preseli and south of the A40 through Brecon, and almost anywhere chance of a burst of rain.
Cloud on the hills?
Will cover western tops
Extensive fog, the cloud base typically 450m by midday as cloud base begins to rise - although may persist at or below 300m Preseli and south of the A40. Possibly clearing higher tops temporarily afternoon mid Wales.
Chance of cloud free summits?
40%
Sunshine and air clarity?
Widely dull and hazy although the sun will come through in places.
How Cold? (at 750m)
6C
Freezing Level
Above the summits, but slight frost some inland valleys at dawn.
Viewing Forecast For
Brecon Beacons
Monday 9th March 2026
Last updated
Sat 7th Mar 26 at
1:08PM
How windy? (On the summits)
South to southwesterly 15mph
Effect of the wind on you?
Small
How Wet?
Patchy rain; very little in total
Bursts, probably brief, of showery rain now and again. Some places may well stay dry, and total rainfall everywhere small.
Cloud on the hills?
Very extensive - although cloud base rising, perhaps breaking.
Very likely blanket of fog from lower slopes up from dawn - though possibly breaks to some higher slopes. Cloud base will rise from late morning, and in afternoon, most cloud will be above 450 to 600m, and may substantially clear.
Chance of cloud free summits?
10% rising to 40%
Sunshine and air clarity?
Widely dull and misty or murky morning. The cloud slowly breaking in places, perhaps substantially in some areas (most likely N Pennines) afternoon and visibility probably improving to be very good.
How Cold? (at 750m)
5C
Freezing Level
Above the summits
Viewing Forecast For
Brecon Beacons
Tuesday 10th March 2026
Last updated
Sat 7th Mar 26 at
1:08PM
How windy? (On the summits)
South to southwesterly; 25 to perhaps 30mph.
Effect of the wind on you?
Likely to impede ease of walking on higher areas.
How Wet?
A little rain here and there
Here and there a burst of rain, but total rainfall small or nil.
Cloud on the hills?
Extensive on higher areas
Generally persistent cloud above 500 to 700m. But may form as low as 300m southern Brecon beacons west to Preseli - uncertain at this stage.
Chance of cloud free summits?
50%
Sunshine and air clarity?
Occasional sun - possibly more widespread sun by afternoon mid and east Wales. Slight hazy west Wales; otherwise very good visibility.
How Cold? (at 750m)
5C.
Freezing Level
Above the summits.
Planning Outlook
Increasingly wet and windy, particularly western mountains through next week. From Wednesday, bouts of upland severe or storm force winds will reach the Sottish Highlands and the gales periodically affecting other mountain areas later in the week. Freeze thaw cycles will occur on higher areas south from S Scotland whilst the Scottish Highlands experience infrequent thaw, with fresh snow sometimes reaching lower slopes, whilst extensive higher up.