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.
Sunday's Forecast
Moderate breeze, locally gusty
A noticeable breeze, feeling cool where exposed on tops. Locally may be gusty, but unlikely to affect walking progress. 15-25mph.
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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Moderate breeze, locally gusty
A noticeable breeze, feeling cool where exposed on tops. Locally may be gusty, but unlikely to affect walking progress. 15-25mph.
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
Sunday 18th January 2026
Last updated
Sat 17th Jan 26 at
3:30PM
Summary for all mountain areas
Cloudy and damp air over many hills, more persistent rain and drizzle develops over northern England and east Wales. Clearer toward north-northwest Scotland. Near or below freezing on Scottish mountains. South to southeasterly winds, gusty in places; strongest toward Skye.
Headline for Brecon Beacons
Cloud covers hills, rain particularly east, light-moderate breeze.
How windy? (On the summits)
Southeasterly 15 to 20mph.
Effect of the wind on you?
Fairly small, but expect noticeable chill factor in exposure on tops.
How Wet?
Rain and drizzle
Drizzle or light rain, becoming more persistent in morning over eastern hills, risk steadier rain more widely for a few hours onward into afternoon, smaller amounts westwards.
Cloud on the hills?
Extensive, lowest east/south
A cloud sheet covers many hills most or all day from mid-elevations upward. Further west, the cloud base higher, local breaks toward Cardigan Bay.
Chance of cloud free summits?
10%
Sunshine and air clarity?
Overcast and dull, misty from low-mid slopes upward, locally better toward west coast.
How Cold? (at 750m)
3C. Feeling like -3C directly in the wind.
Freezing Level
Above freezing to higher tops.
Viewing Forecast For
Brecon Beacons
Monday 19th January 2026
Last updated
Sat 17th Jan 26 at
3:30PM
How windy? (On the summits)
Southerly 20mph, gusty 25mph in places around some higher tops, possibly 30mph for periods.
Effect of the wind on you?
Fairly small, but at times more blustery in exposure, affecting ease of walking. Marked wind chill.
How Wet?
Rain and drizzle
Generally damp all day, frequent drizzle, some steadier rain for periods.
Cloud on the hills?
Extensive
Low cloud shrouding the hills widely, foggy from many mid-slopes upward, some lower elevations furthest south. Local higher breaks possible toward Cardigan Bay.
Chance of cloud free summits?
10%
Sunshine and air clarity?
Overcast and dull, poor visibility over hills, hazy lower down.
How Cold? (at 750m)
4C. Feeling like -5C directly in the wind.
Freezing Level
Above the summits.
Viewing Forecast For
Brecon Beacons
Tuesday 20th January 2026
Last updated
Sat 17th Jan 26 at
3:30PM
How windy? (On the summits)
South-southeasterly, likely strengthening 30 to 50mph, powerful gusts around high tops and in places downslope to north.
Effect of the wind on you?
Increasingly arduous walking conditions, buffeting gusts affecting balance; significant wind chill.
How Wet?
Frequent or persistent rain
Patchy rain may become more frequent from the south, risk steadier and heavier rain setting in for periods.
Cloud on the hills?
Extensive
Shrouding the hills widely, from mid to lower slopes upward in southern areas.
Chance of cloud free summits?
10%
Sunshine and air clarity?
Generally cloudy and dull. Hazy or misty over most hills toward lower slopes.
How Cold? (at 750m)
2 or 3C. Wind chill feeling like -10 to -13C.
Freezing Level
Above the summits.
Planning Outlook
South to southeasterly winds prevail into the new week, trending more easterly in Scotland, widely strengthening to become persistently windy, gales over mountains with powerful gusts. Mountains staying near to freezing point in Scotland, typically just above freezing to high tops in England and Wales for a few days. Initially weak fronts try to push in from the west bringing occasional rain and high-level snow, then some more persistent falls later in the week; generally driest in northwest Scotland. Colder air trying to move in from the east into later January, leaving most mountain terrain frozen in the longer range.