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.
Today'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.
Winter sunshine
Bright sunshine most of the day with the mountains generally free of cloud. Snow cover on higher terrain.
Cold
Air temperature below 0C all day on higher mountains. Significant chill factor if exposed to strong winds. Suitable protective clothing required.
Click an icon for more information or click here for a key to all icons.
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.
Winter sunshine
Bright sunshine most of the day with the mountains generally free of cloud. Snow cover on higher terrain.
Cold
Air temperature below 0C all day on higher mountains. Significant chill factor if exposed to strong winds. Suitable protective clothing required.
Viewing Forecast For
Brecon Beacons
Wednesday 31st December 2025
Last updated
Tue 30th Dec 25 at
4:28PM
Summary for all mountain areas
Much terrain frozen, frost into valleys and glens in the morning, all day out of sunlight, but temperature and freezing level tending to lift toward 800m from west. Showery rain and hill snow moving into W-NW Scotland. Wind strengthening, becoming gales over tops in Scotland during day, then N England after dark.
Headline for Brecon Beacons
Little wind, some breeze afternoon. Dry, sunny.
How windy? (On the summits)
Variable 10mph or less in morning, lifting to westerly 15 to 20mph afternoon into evening, 25-30mph into night.
Effect of the wind on you?
Mostly small until late in day.
How Wet?
No precipitation
Cloud on the hills?
Mostly little, rare patches
Hills generally clear, bar a few ragged patches; mainly higher western Cambrians later in the day.
Chance of cloud free summits?
90%
Sunshine and air clarity?
Mostly sunny, cloud starting to push in from west later. Visibility excellent, some mist patches in valleys in morning.
How Cold? (at 750m)
-1C. Feeling closer to -8C in the strongest winds by the evening.
Freezing Level
All levels in morning, below freezing with widespread frost into valleys, but lifting to 500-700m.
Viewing Forecast For
Brecon Beacons
Thursday 1st January 2026
Last updated
Tue 30th Dec 25 at
4:28PM
How windy? (On the summits)
West to northwesterly 25 to 35mph, squally gusts in showers.
Effect of the wind on you?
Strenuous walking in exposure on higher hills, buffeting gusts. Significant wind chill.
How Wet?
Showers, snow on tops
Showery spells moving southeastwards across the region, falling as snow above 600m, possible hail, more frequent western Cambrians for periods.
Cloud on the hills?
Sometimes covering tops
Patchy cloud drifting over higher slopes mostly west Wales above 600-700m, sometimes more widely in showers.
Chance of cloud free summits?
60%
Sunshine and air clarity?
Fairly cloudy, occasional sun. Visibility very good, occasionally reduced in showers.
How Cold? (at 750m)
0 or -1C. Wind chill feeling like -10C.
Freezing Level
Up to dawn near to freezing to some lower slopes, then rising to 700-800m.
Viewing Forecast For
Brecon Beacons
Friday 2nd January 2026
Last updated
Tue 30th Dec 25 at
4:28PM
How windy? (On the summits)
Northwesterly 20 to 30mph, local squally gusts in showers.
Effect of the wind on you?
Considerable wind chill over the mountains. Blustery, starting to affect comfortable walking in exposure on tops.
How Wet?
Snow and hail showers
Showers feeding inland from Cardigan Bay mainly over west Wales, locally more frequent, snow and hail falling to lower slopes, rain only lower coastal areas. Some showers more widely at times.
Cloud on the hills?
Varied over tops
Cloud likely to come and go on higher tops, mostly above 800m, patches sometimes to 600m in showers. More often clearing southeastern areas.
Chance of cloud free summits?
70%
Sunshine and air clarity?
Bursts of sunshine, best southeast. Visibility varying between very good for periods, to very poor in showers.
How Cold? (at 750m)
-2C. Wind chill feeling like -12C on tops.
Freezing Level
500 to 600m. Soon widely dropping below freezing from valleys upward into evening.
Planning Outlook
Significantly cold wintry conditions into the start of January. Air temperature well below freezing on high terrain, plus low minima into many glens and valleys with sustained hard frost. Strong northerly winds later this week giving severe wind chill. Frequent and heavy snow showers moving into northern areas and running down coastal extremities with significant accumulations. Elsewhere, lots of dry and sunny weather, although occasional organised bands of snow will feed south at times in the Arctic airflow. Staying cold into next week with scope for snowfalls more widely.