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.
Friday'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.
Sunny but cold
Bright winter sunshine most of the day with the mountains generally free of cloud. Snow cover on higher terrain.
Clear
Excellent or superb visibility, no navigation issues.
Cold
Air temperature below 0C all day on higher mountains. Significant chill factor if exposed to strong winds. Suitable protective clothing required.
Terrain widely frozen
All ground frozen from lower elevations upward, with hard frost or snow cover. Beware of icy surfaces on lower and higher terrain. Appropriate footwear needed, crampons may be necessary.
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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.
Sunny but cold
Bright winter sunshine most of the day with the mountains generally free of cloud. Snow cover on higher terrain.
Clear
Excellent or superb visibility, no navigation issues.
Cold
Air temperature below 0C all day on higher mountains. Significant chill factor if exposed to strong winds. Suitable protective clothing required.
Terrain widely frozen
All ground frozen from lower elevations upward, with hard frost or snow cover. Beware of icy surfaces on lower and higher terrain. Appropriate footwear needed, crampons may be necessary.
Viewing Forecast For
Brecon Beacons
Friday 21st November 2025
Last updated
Thu 20th Nov 25 at
4:00PM
Summary for all mountain areas
Terrain widely frozen after hard frost; snow cover across much upland terrain, or more substantial to lower slopes northern Highlands. A front moves into Scotland, snow then rain in west, cloud lowering. Elsewhere dry, sunshine weakening. Wind strengthening to gale force Scottish mountains.
Headline for Brecon Beacons
Wind soon light during day. Dry with sunshine, high cloud.
How windy? (On the summits)
North-northwest 15-20mph at dawn, soon dropping to 10mph or less through middle of day into afternoon, later starting to increase west-southwesterly, 15-20mph up to dusk, eventually 40mph into night.
Effect of the wind on you?
Mostly small during daytime, then deteriorating onward into night.
How Wet?
Dry most places until later in night
An odd early light shower near Pembrokeshire coast, otherwise all daytime dry. Well into night, rain developing from west, snow on higher terrain for a time.
Cloud on the hills?
None on most hills
Most hills clear all day. Early patches may graze Preseli hills. During afternoon, some patches may form on slopes elsewhere near west coast.
Chance of cloud free summits?
90%
Sunshine and air clarity?
Sun through high cloud, tending to thicken from west, may become obscured later. Visibility excellent, possible mist or haze in some valleys.
How Cold? (at 750m)
-1C, slight rise to around 0C afternoon, then slightly higher into night.
Freezing Level
Terrain widely frozen in morning, all day out of sunlight. General rise toward 700m; then into night just above freezing to the tops.
Viewing Forecast For
Brecon Beacons
Saturday 22nd November 2025
Last updated
Thu 20th Nov 25 at
4:00PM
How windy? (On the summits)
SW'ly 40mph in morning, risk 50mph around dawn, easing to W later SW'ly again, 25mph. Into night S'ly 40-50mph.
Effect of the wind on you?
Strenuous walking with frequent buffeting and considerable wind chill, tending to gradually improve during day.
How Wet?
Rain in morning, some heavy
Rain arriving before dawn from the west likely to continue into the daytime, risk wet until midday, occasional heavier rain. Tending to ease off and become patchy, drier afternoon. Rain returning persistently into night.
Cloud on the hills?
Extensive, some rising east
Shrouding the hills widely, banks to some lower elevations in morning and while rain persists on southern slopes. Rising into afternoon, best of any breaks toward 600m likely east mid-Wales.
Chance of cloud free summits?
20%
Sunshine and air clarity?
Largely cloudy. Misty and dull especially south, poor visibility due to rain, some improvement afternoon.
How Cold? (at 750m)
4 or 5C. Feeling like -7C in exposure to strongest wind.
Freezing Level
Above the summits.
Viewing Forecast For
Brecon Beacons
Sunday 23rd November 2025
Last updated
Thu 20th Nov 25 at
4:00PM
How windy? (On the summits)
Low confidence of detail: Likely west or northwesterly, speed may vary, but risk up to 50mph, risk 60mph.
Effect of the wind on you?
Beware possibility of generally poor conditions, difficult walking and significant wind chill.
How Wet?
Frequent rain, heavy bursts
Rain frequent or merging to more persistent falls over western hills, heavy bursts on and off, risk hail.
Cloud on the hills?
Extensive
Cloud base may vary, but often covering hills above 600-800m, lowest western areas, occasional breaks further east.
Chance of cloud free summits?
20%
Sunshine and air clarity?
No sun expected. Visibility often poor in precipitation, local improvements eastern hills.
How Cold? (at 750m)
2 or 3C. Feeling like -10 to -15C if exposed to stronger speeds.
Freezing Level
Above the summits, but may drop close to freezing on highest slopes in heavier precipitation and into night.
Planning Outlook
Changes into the weekend as less cold Atlantic air moves in, but higher mountain terrain at least in Scotland staying frozen with snow cover. A complex area of low pressure circulates over Britain through the weekend, retreating to leave briefly northeasterly winds by Monday; areas of rain and some upland snow, mainly Scotland and high tops in northern England. Winds will vary markedly, some lulls, but risk periods of gales. A brief ridge of high pressure gives a lull by Tuesday, then a shift to milder southwesterlies is likely to bring spells of rain and some thawing to higher levels.