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
Gale force, walking arduous
Considerable buffeting, walking into the wind will be strenuous on exposed terrain, stronger gusts may knock you off your feet. 40 to 55mph.
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.
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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Gale force, walking arduous
Considerable buffeting, walking into the wind will be strenuous on exposed terrain, stronger gusts may knock you off your feet. 40 to 55mph.
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.
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
Monday 12th January 2026
Last updated
Sun 11th Jan 26 at
1:43PM
Summary for all mountain areas
Extensive upland gales, although storm force at first N Scotland. Bands of showers, of hail, and snow higher areas, will merge to give periods of almost constant precipitation on many western mountains. Small risk thunder. Driest conditions will be on easternmost mountains and S Wales.
Headline for Brecon Beacons
Gale force upland wind. Showery; fog.
How windy? (On the summits)
Southwesterly 40mph.
Effect of the wind on you?
Walking widely difficult on higher areas, frequent buffeting even lower elevations. Considerable wind chill.
How Wet?
Rain much of the day, heavy bursts
Showers, sometimes frequent some with hail. Driest mid Wales. Very wet underfoot west Wales due to previous rain.
Cloud on the hills?
Often covering tops
Covering areas above 600m extensively, and in rain cloud base sometime below 300 or 400m. In mid Wales, most cloud above the summits.
Chance of cloud free summits?
Less than 10%, but 60% mid Wales
Sunshine and air clarity?
Glimpses of sun, mainly mid and east Wales. A general haze,n.
How Cold? (at 750m)
5C. Will feel as cold as -8C where exposed to the wind.
Freezing Level
Above the summits.
Viewing Forecast For
Brecon Beacons
Tuesday 13th January 2026
Last updated
Sun 11th Jan 26 at
1:43PM
How windy? (On the summits)
Forecast confidence remains low: Generally south 30 to perhaps 40mph, but speeds may be lower or drop from west.
Effect of the wind on you?
Walking on higher areas may well be arduous most or all day and wind chill considerable.
How Wet?
Rain may become incessant
Rain may well fall most or all day - although drier conditions to the west may penetrate across Wales (very uncertain).
Cloud on the hills?
Blanket of low cloud probable; cloud base may rise or have risen from west
Cloud may well fill in or have filled in across the hills in rain. There may be improvement from the west but this very uncertain.
Chance of cloud free summits?
10%
Sunshine and air clarity?
Little or no sunshine. Widely misty or murky in rain.
How Cold? (at 750m)
6C
Freezing Level
Above the summits.
Viewing Forecast For
Brecon Beacons
Wednesday 14th January 2026
Last updated
Sun 11th Jan 26 at
1:43PM
How windy? (On the summits)
West backing southerly around 25mph before later in day strengthening to 40-50mph.
Effect of the wind on you?
May well be fairly small for several hours before walking.becomes increasingly difficult and wind chill significant.
How Wet?
Risk of snow an hail showers
A few showers may come in off the sea giving hail and snow, although rain lower particularly coastal slopes. Threat precipitation setting in late in day.
Cloud on the hills?
Probably remaining extensive on most or all higher areas
Cloud sometimes forming below 450m near the coast, but cloud base generally rising to 600 to 800m - possibly a few breaks to higher summits, mainly east Wales. Cloud base may drop markedly later in day.
Chance of cloud free summits?
20%
Sunshine and air clarity?
Occasional sunshine, before cloud thickens from west. Visibility often very good, but poor in snow.
How Cold? (at 750m)
-1C
Freezing Level
700m.
Planning Outlook
High rainfall and intermittently windy across most mountains over the next week or more as a series of Atlantic lows cross Britain. With uncertainty in the tracks of some lows, Tuesday's forecast remains very uncertain - but by Wednesday a transient weak ridge of high pressure will bring a brief improvement. Higher summits sometimes below freezing point S Scotland southwards: snow may accumulate on highest summits. Mostly below freezing Scottish Highlands enabling snow to accumulate widely.