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
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.
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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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.
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 19th January 2026
Last updated
Sun 18th Jan 26 at
4:17PM
Summary for all mountain areas
Rain near the west coast of Scotland, largely dry inland, but low cloud covering southern Highlands widely, higher and more broken cloud northward. Rain or drizzle and blanket fog over the Pennines, drier for Lakes and Wales, with best cloud breaks northern areas. Southerly winds strongest N/W Scotland, gusty.
Headline for Brecon Beacons
Increasing gusty wind. Low cloud, some drizzle.
How windy? (On the summits)
Southerly 20mph, gusty 25mph in places around some higher tops, in afternoon reaching 30mph for periods.
Effect of the wind on you?
Fairly small, but becoming more blustery in exposure, affecting ease of walking. Marked wind chill.
How Wet?
Drizzle
Generally damp all day, frequent drizzle, but total amounts small.
Cloud on the hills?
Extensive, lowest south/east; breaks west
Low cloud shrouding the hills widely, foggy from many mid-slopes upward, some lower elevations furthest south. Local higher breaks toward Cardigan Bay, clearing to some upper slopes.
Chance of cloud free summits?
10%, to 40% westernmost Cambrians.
Sunshine and air clarity?
Overcast and dull, poor visibility over hills, hazy lower down. Locally better toward Cambrian coast.
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
Sun 18th Jan 26 at
4:17PM
How windy? (On the summits)
South-southeasterly, strengthening 40 to 60mph, powerful gusts around high tops and in places downslope to north.
Effect of the wind on you?
Arduous walking conditions, difficult on exposed high terrain, gusts could knock you over; significant wind chill.
How Wet?
Drizzly rain, risk wetter later
Patchy rain and drizzle, most persistent Brecon Beacons. Afternoon into evening, risk steadier and heavier rain setting in from southwest.
Cloud on the hills?
Covering most tops
Shrouding the hills widely, lowest cloud base toward south to mid-slopes, some higher breaks toward mid-Wales.
Chance of cloud free summits?
20%
Sunshine and air clarity?
Generally cloudy and dull. Visibility poor in rain/drizzle, local improvements mainly northward.
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
Sun 18th Jan 26 at
4:17PM
How windy? (On the summits)
Southeasterly 30 to 50mph, speed likely to vary during the day, but likely generally strengthening, perhaps quickly.
Effect of the wind on you?
Walking increasingly arduous over exposed terrain, gusts frequently knocking you off balance. Significant wind chill.
How Wet?
Generally damp, risk rain setting in
Rain on and off, likely persistently drizzly across the hills. Risk of steadier rain setting in, possibly becoming heavier later.
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 -10 to -15C where exposed on higher areas.
Freezing Level
Close to freezing on higher tops around 800m, tending to lower slightly during day.
Planning Outlook
South to southeasterly winds prevail during the week ahead, widely strengthening to become persistently windy, gales over mountains with powerful gusts. Mountains near to freezing point in Scotland, typically just above freezing to high tops in England and Wales for a few days. A slowly circulating weather system will bring areas of rain and high-level snow, becoming more persistent as the week progresses, cloud covering most hills; generally driest and clearest in northwest Scotland. Colder air trying to move in from the east into later January, leaving most mountain terrain frozen in the longer range.