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.
Tuesday'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
Tuesday 20th January 2026
Last updated
Mon 19th Jan 26 at
4:30PM
Summary for all mountain areas
Strong southeasterlies, gusting gale-force Scottish mountains, strengthening widely. Gales all day for Wales, severe on high tops, increasingly northern England also. Some light rain and hill snow flurries, mostly eastern Scotland, fading with rising cloud base. Heavier rain develops in south Wales.
Headline for Brecon Beacons
Gales, severe over tops. Rain moving in, low cloud south.
How windy? (On the summits)
South-southeasterly, 50 to 60mph from dawn, in places 70mph over higher mountains, powerful gusts around high tops and downslope to north. Speeds lowering a little later afternoon.
Effect of the wind on you?
Difficult walking conditions throughout the day, any mobility challenging on high terrain gusts could knock you over, not just on the tops; significant wind chill.
How Wet?
Rain becoming heavier especially west
Patchy rain and drizzle early in day becoming increasingly steadier and heavier rain setting in from southwest, ongoing afternoon into evening. Smaller amounts northward into mid-Wales. Becoming very wet underfoot.
Cloud on the hills?
Covering most tops
Varied at first with some breaks western Cambrians, but increasingly shrouding the hills widely, lowest cloud base toward south to mid-slopes, some higher breaks toward mid-west Wales.
Chance of cloud free summits?
20%
Sunshine and air clarity?
Generally cloudy and dull. Visibility poor in rain/drizzle, locally better in west early in day.
How Cold? (at 750m)
2 or 3C. Wind chill feeling like -12 to -15C.
Freezing Level
Above the summits.
Viewing Forecast For
Brecon Beacons
Wednesday 21st January 2026
Last updated
Mon 19th Jan 26 at
4:30PM
How windy? (On the summits)
Southeasterly 40 to 50mph, speed may vary, but likely soon strengthening in morning, risk 60mph for a time.
Effect of the wind on you?
Walking arduous over exposed terrain, gusts frequently knocking you off balance. Significant wind chill.
How Wet?
Frequent or persistent rain
Rain on and off, risk fairly persistent across many hills. Likely steadier rain setting in, heavier at times in south.
Cloud on the hills?
Extensive
Covering the hills widely above 400-600m, highest bases toward the western Cambrians; may fill in lower in south.
Chance of cloud free summits?
10%
Sunshine and air clarity?
Overcast and dull, poor visibility in rain.
How Cold? (at 750m)
Around 0C. Wind chill feeling like -12 to -15C where exposed on higher areas.
Freezing Level
Close to freezing on higher tops around 800m, tending to lower slightly during day.
Viewing Forecast For
Brecon Beacons
Thursday 22nd January 2026
Last updated
Mon 19th Jan 26 at
4:30PM
How windy? (On the summits)
Easterly 25 to 40mph, very gusty in places around higher tops and in places downslope to the west.
Effect of the wind on you?
Strenuous walking on higher terrain, gusts affecting balance not just on tops. Considerable wind chill.
How Wet?
Often raining south and east
Frequent or persistent rain, some heavy bursts with possible hail mixed in. Smaller amounts western Cambrians.
Cloud on the hills?
Extensive
Covering higher terrain much of the day, lowest bases on southeastern aspects, occasionally may break higher up, more often western areas.
Chance of cloud free summits?
20%
Sunshine and air clarity?
Generally cloudy, dull south/east. Visibility often poor due to rain, sometimes good west Wales.
How Cold? (at 750m)
2 or 3C. Wind chill feels as cold as -10C.
Freezing Level
Above freezing to highest tops.
Planning Outlook
Strong east to southeasterlies continue beyond midweek, sustained gales over most mountains with powerful gusts downslope toward west. Near or just below freezing on higher tops - colder air is likely to move into Scotland at least late in the week, much mountain terrain then frozen with severe chill factor. Scope for substantial snowfalls over eastern Scottish hills later this week. Sleet or snow mostly higher tops in England and Wales, may fall lower over the weekend. Low cloud often covering many hills across Britain, clearer and drier toward western coasts. Circulating low pressure and cold air likely into next week, with further snowfalls likely.