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.
Monday's Forecast
Windy, walking impeded
Blustery conditions enough to give buffeting on higher terrain or affect balance on exposed ridges. 25 to 40mph.
Snow and hail showers
Periods of bright or sunny conditions mixed with showers or flurries of snow and hail. Visibility may change rapidly from excellent to very poor.
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.
Click an icon for more information or click here for a key to all icons.
Windy, walking impeded
Blustery conditions enough to give buffeting on higher terrain or affect balance on exposed ridges. 25 to 40mph.
Snow and hail showers
Periods of bright or sunny conditions mixed with showers or flurries of snow and hail. Visibility may change rapidly from excellent to very poor.
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
Monday 5th January 2026
Last updated
Sun 4th Jan 26 at
4:15PM
Summary for all mountain areas
Cold northerlies continue; significant chill factor over mountains, though speeds less than recent days. All terrain frozen; snow cover widely in Highlands, substantial in north, further showers of snow and hail. Showers continue to feed into N/W Wales. Largely dry with sun and broken cloud N England/S Scotland.
Headline for Brecon Beacons
Cold brisk wind. Dry with sunshine, snow showers far west.
How windy? (On the summits)
Northerly 20-30mph, strongest in west. After dark shifting northwesterly.
Effect of the wind on you?
Continued considerable wind chill over the hills. Wind affects ease of walking where exposed on tops, strenuous at times.
How Wet?
Dry for many; Pembrokeshire snow showers
Overnight snow showers may leave a fresh covering widely to lower slopes. Then daytime snow & hail showers mostly over Pembrokeshire, may occasionally drift east towards the Cambrians and westernmost Brecon Beacons, but most mountains stay dry.
Cloud on the hills?
Little, if any, after morning
Few patches on high tops in the west early, these tending to lift and break for substantially cloud-free mountains across south Wales.
Chance of cloud free summits?
80%
Sunshine and air clarity?
Often sunny, some patchy cloud around, most in the west. Visibility excellent, locally reduced where showers occur.
How Cold? (at 750m)
-3 or -4C. Wind chill feeling like -15C in exposure on high tops.
Freezing Level
Terrain widely frozen down to valleys well inland; at dawn near -10C some valleys. Up to 300-400m nearest coasts in Pembrokeshire and Cambrians.
Viewing Forecast For
Brecon Beacons
Tuesday 6th January 2026
Last updated
Sun 4th Jan 26 at
4:15PM
How windy? (On the summits)
Soon westerly 15-20mph, strengthening with time and shifting southwesterly, 30-35mph over the summits.
Effect of the wind on you?
Fairly small for several hours, though walking becoming uncomfortable to strenuous with significant wind chill.
How Wet?
Patchy snow, mostly in the west
Bands of patchy snow passing west-to-east through the day; very little precipitation east of Brecon. Snow/sleet becomes more frequent around and after dusk.
Cloud on the hills?
Mostly high west terrain, variably lower
Variable cloud on high terrain, some breaks off summits, but lowering to middle slopes during snow showers. A trend towards more persistent cloud with time afternoon. Easternmost mountains may only see cloud on high terrain during daylight.
Chance of cloud free summits?
30%
Sunshine and air clarity?
Some bright/sunny spells will break out, but cloud will be extensive for periods too. Variable visibility, very good for periods, but rapidly deteriorating to very poor in snow.
How Cold? (at 750m)
-2C, rising slightly with time. Feeling like -13C in direct wind.
Freezing Level
Terrain widely frozen from dawn, lifting with time to 400-600m, highest level west of Brecon.
Viewing Forecast For
Brecon Beacons
Wednesday 7th January 2026
Last updated
Sun 4th Jan 26 at
4:15PM
How windy? (On the summits)
Northwesterly 25 to 35mph, likely strongest around dawn, lessening, shifting westerly 15-20mph, then increasing after dark.
Effect of the wind on you?
Be prepared for marked wind chill on exposed high terrain, risk very blustery at first, becoming smaller during daytime.
How Wet?
Patchy sleety rain moving in west
Isolated coastal showers, flurries on hills locally, with time may develop into some steadier precipitation from west, turning to sleet/rain to mid heights or above; less precipitation in eastern areas.
Cloud on the hills?
Patches locally, clearer east/south
Patchy cloud over higher tops, mostly western areas, but possibly good breaks to many tops across Brecon Beacons and east Wales during the daytime.
Chance of cloud free summits?
70%
Sunshine and air clarity?
Some early brightness through high cloud, best in east, but overcast skies becoming duller. Visibility very good whilst dry.
How Cold? (at 750m)
-1C rising to +2C, or slightly higher after dark. Feeling as cold as -10C if exposed to stronger wind.
Freezing Level
Slight frost inland valleys at first. Otherwise 600m, tending to rise above freezing to higher slopes, but icy surfaces likely.
Planning Outlook
Freezing conditions widely over the mountains all this week - some changes toward the weekend as Atlantic lows try to circulate further northwards, bringing some variable thawing mainly to England and particularly Wales, whilst Scottish mountains may see brief if any periods of above-freezing conditions even onward into mid-month. Complex weather systems later this week, with potentially a deep low moving across southern Britain by Thursday-early Friday which may bring some snowfalls to Wales and the southern Pennines, accompanied by possibly severe gales. More variable wind speeds for Scotland, trending westerly; some lulls but interspersed with gales. Further accumulating upland snow, mixed with some lowland rain.