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.
Thursday's Forecast
Severe gale or storm, mobility very difficult
Severe conditions on the mountains, any movement very challenging, you may be blown over. 55-70mph+
Frequent or persistent rain
Steady rain fairly persistent, occasionally heavy, rather wet underfoot.
Poor visibility
Murky conditions with areas of fog shrouding the hills, making navigation challenging. Map and compass essential.
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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Severe gale or storm, mobility very difficult
Severe conditions on the mountains, any movement very challenging, you may be blown over. 55-70mph+
Frequent or persistent rain
Steady rain fairly persistent, occasionally heavy, rather wet underfoot.
Poor visibility
Murky conditions with areas of fog shrouding the hills, making navigation challenging. Map and compass essential.
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
Thursday 12th March 2026
Last updated
Wed 11th Mar 26 at
12:53PM
Summary for all mountain areas
Severe gale or storm force upland winds ahead of an active slowly southeastward moving front, which will bring widespread heavy rain and fog to almost all mountain areas. Across Scotland, behind the front, squally hail and snow showers.
Headline for Brecon Beacons
Upland severe gales; frequent rain, and fog.
How windy? (On the summits)
Southwesterly, soon strengthening to 50 to 60mph.
Effect of the wind on you?
Very difficult conditions. On higher areas, where exposed any mobility soon challenging. Severe wind chill.
How Wet?
Drizzly rain increasingly frequent; least wet north from Black Mountains
Starting largely dry particularly east Wales, but patchy rain and drizzle increasingly through morning. Gradually the rain more frequent from the west.
Cloud on the hills?
Extensive
Shrouding even many lower slopes all day. Generally highest cloud base toward and north of Black Mountains, but even here not often above 550m.
Chance of cloud free summits?
20%
Sunshine and air clarity?
Dull and misty or murky after the odd glimpse of sun east Wales morning.
How Cold? (at 750m)
6C. Will feel as cold as minus -10C directly in wind.
Freezing Level
Above the summits during daylight, lowering overnight to 600m.
Viewing Forecast For
Brecon Beacons
Friday 13th March 2026
Last updated
Wed 11th Mar 26 at
12:53PM
How windy? (On the summits)
West to southwesterly 30 to 40mph, likely strongest in the morning, squally gusts around showers.
Effect of the wind on you?
Strenuous walking conditions over exposed higher terrain, buffeting at times and considerable wind chill.
How Wet?
Hail and snow showers, risk thunder
Showers with hail sometimes frequent on more western hills; also snow falling to 300-400m in morning, then mostly confined above 600m with time. Risk isolated lightning.
Cloud on the hills?
Often covering higher tops
Cloud base frequently changing: at times shafts of cloud to 600m or lower near Cardigan Bay, and likely to come and go above 700-800m inland, but some breaks to the higher tops, more often eastwards.
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)
-2C rising to 0C afternoon. Feeling like -10 to -13C directly in the wind.
Freezing Level
500-600m at first, rising toward 800m by early afternoon.
Viewing Forecast For
Brecon Beacons
Saturday 14th March 2026
Last updated
Wed 11th Mar 26 at
12:53PM
How windy? (On the summits)
Southwesterly, ranging from 20 to 430mph. (Gradually strengthening through day.)
Effect of the wind on you?
Mostly fairly small, particularly morning.
How Wet?
Showers.
Showers particularly morning; of sleet higher slopes. Chance widespread precipitation by dusk.
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.
Planning Outlook
Further bouts of upland gales over the next few days. Precipitation on most mountains almost daily, focussed on western mountains. 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.