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
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.
Hazy, some fog banks
.jpg "Hazy, some fog banks"){kind=icon}
Visibility reduced around cloud banks, hazier on some lower slopes. Locally some improvements possible out of cloud.
Cold
Air temperature below 0C all day on higher mountains. Significant chill factor if exposed to strong winds. Suitable protective clothing required.
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.
Hazy, some fog banks
Visibility reduced around cloud banks, hazier on some lower slopes. Locally some improvements possible out of cloud.
Cold
Air temperature below 0C all day on higher mountains. Significant chill factor if exposed to strong winds. Suitable protective clothing required.
Viewing Forecast For
Brecon Beacons
Friday 13th March 2026
Last updated
Thu 12th Mar 26 at
6:25PM
Summary for all mountain areas
Cold widely gale force upland winds around a deep low north of Scotland, will bring a succession of snow and hail showers to the mountains. Cloud will extensively cover the mountains (the highest cloud base well inland afternoon). Much higher terrain will be below freezing point.
Headline for Brecon Beacons
Upland gales; squally hail and snow showers. Fog.
How windy? (On the summits)
West to southwesterly soon 30 to 40mph, strongest Cambrian range and highest tops elsewhere. Will tend to ease toward 30mph. Very gusty near precipitation.
Effect of the wind on you?
Strenuous walking over exposed higher terrain, particularly morning when buffeting considerable and wind chill significant.
How Wet?
Hail and snow showers, risk thunder
Showers with hail, possibly merging into almost constant precipitation over an hour or so. Snow falling to 400m in morning, then above 650m. Risk isolated lightning.
Cloud on the hills?
Often covering higher tops
Cloud base varying sometimes quickly: near precipitation shafts of cloud 450m or lower and persistent higher areas. During drier periods cloud base typically 700 to 900m (generally highest Black Mountains).
Chance of cloud free summits?
40%
Sunshine and air clarity?
Bursts of sun west, or more frequent bright sun east Wales. Visibility often very good eastern areas, but further west at times very poor in showers.
How Cold? (at 750m)
-1C rising to 1C afternoon. Will feel as cold as minus 11C directly in the wind.
Freezing Level
500m at first, rising gradually toward 900m.
Viewing Forecast For
Brecon Beacons
Saturday 14th March 2026
Last updated
Thu 12th Mar 26 at
6:25PM
How windy? (On the summits)
Southwesterly, ranging from 20 to perhaps at times 30mph.
Effect of the wind on you?
Mostly fairly small, particularly morning.
How Wet?
Showers.
Showers particularly morning; of sleet higher slopes.
Cloud on the hills?
Almost constantly covering higher tops
Varied cloud base: sometimes below 450m near precipitation but by late morning periods when most cloud above 600 or 700m.
Chance of cloud free summits?
60%
Sunshine and air clarity?
Patches of sun, mainly east Wales north from Black Mountains. Hazy.
How Cold? (at 750m)
1C. Will feel as cold as minus 12C directly in the wind.
Freezing Level
Just above highest summits.
Viewing Forecast For
Brecon Beacons
Sunday 15th March 2026
Last updated
Thu 12th Mar 26 at
6:25PM
How windy? (On the summits)
Southwest veering west typically between 40mph, perhaps occasionally 50 or 55mph on highest tops.
Effect of the wind on you?
Continued difficult walking and wind chill significant on exposed higher areas. Expect balance to be tricky.
How Wet?
Rain; later clearing to showers
Morning: Extensive rain. Middle of day or into afternoon: Clearing from west, but the rain finishing as sleet highest tops. Later: Occasional showers, sleet or snow higher tops
Cloud on the hills?
Hills covered morning; then cloud base rising markedly
Morning: Blanket of fog across the hills, breaks to 700m west Wales. Middle of day: Beginning to improve. Into afternoon: Varying cloud base, between occasionally 500m near precipitation and otherwise 750 to 900m.
Chance of cloud free summits?
Less than 10% morning; later 70%
Sunshine and air clarity?
Dull and misty morning. Then improving to patchy sun (sunniest east Wales) and mostly very good visibility.
How Cold? (at 750m)
5C dropping to around 1C. Will feel as cold as minus 8C where exposed to the wind.
Freezing Level
Above the summits morning, then dropping to, or perhaps just below 900m.
Planning Outlook
Further bouts of upland gales over the next few days. Precipitation on most mountains daily, focussed on western hills. Freeze thaw cycles will occur: on the Scottish Highlands, thaw periods fairly brief and snow accumulating on many slopes. Further south, lying snow more intermittent as periods of thaw will be lengthier. Temperature levels will rise from about next Tuesday and as pressure then builds, most or all mountain areas will then become largely fine.