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
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.
Patchwork of cloud and sun
Dry most or all day. A mix of cloud and sunshine. Occasional cloud banks drifting over higher slopes, lifting above the tops.
Cold
Air temperature below 0C all day on higher mountains. Significant chill factor if exposed to strong winds. Suitable protective clothing required.
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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.
Patchwork of cloud and sun
Dry most or all day. A mix of cloud and sunshine. Occasional cloud banks drifting over higher slopes, lifting above the tops.
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 24th December 2025
Last updated
Tue 23rd Dec 25 at
3:44PM
Summary for all mountain areas
Patchy cloud on middle and high slopes of central and east Scottish Highlands, clearer west and north; high summits clear too. Most cloud in England stays east of the Pennines, little west including Lakeland where isolated to summits. Gusty wind in Wales, risk gales south; early cloud in the east will break.
Headline for Brecon Beacons
Windy, gale-force gusts; morning cloud east will break
How windy? (On the summits)
A gusty easterly, 35-45mph, the most powerful downslope gusts in the west reaching 50mph or higher.
Effect of the wind on you?
Strenuous-to-arduous walking with considerable buffeting, including downslope to the west. Expect stability challenges and significant wind chill.
How Wet?
No precipitation expected
Cloud on the hills?
Mostly high eastern terrain
Cloud banks frequently covering high terrain of the Black Mountains and Pen-Y-Fan group. More patchy to the west, southern slopes often free of cloud and improving more widely later.
Chance of cloud free summits?
40% rising to 70%
Sunshine and air clarity?
Patchy sunshine to the east, more often sunny west, increasingly widespread. A haze at first but visibility improving.
How Cold? (at 750m)
-1 or 0C most areas, locally a degree or two warmer westernmost hills, particularly Cambrians. Trending cooler evening into night. Feeling like -10 to -13C in direct wind.
Freezing Level
Poorly defined: 700-800m, though milder downslope wind to the west will reduce freezing potential here.
Viewing Forecast For
Brecon Beacons
Thursday 25th December 2025
Last updated
Tue 23rd Dec 25 at
3:44PM
How windy? (On the summits)
Easterly 45-55mph, powerful gusts in exposure and downslope to the west, particularly western Cambrians.
Effect of the wind on you?
Challenging conditions in exposure with gusts nearly constantly challenging balance. Severe wind chill.
How Wet?
No rain expected
Cloud on the hills?
Mostly clearing
In the morning, banks come and go over the high terrain around the Black Mountains, patchier near Pen-Y-Fan, and more fleeting on other high tops. Cloud increasingly breaks on all hills.
Chance of cloud free summits?
Rising to 80%
Sunshine and air clarity?
Sunshine increasingly widespread with excellent visibility.
How Cold? (at 750m)
-2 or -1C, westernmost slopes a few degrees warmer. Feeling like -15C or colder in direct wind.
Freezing Level
300-400m from dawn, rising slightly; up to 600m in the west though poorly defined due to milder downslope wind.
Viewing Forecast For
Brecon Beacons
Friday 26th December 2025
Last updated
Tue 23rd Dec 25 at
3:44PM
How windy? (On the summits)
Easterly 30 to 45mph, stronger gusts around some tops and high passes; locally also gusty downslope west of high tops.
Effect of the wind on you?
Strenuous walking with considerable wind chill in exposure over high terrain, in places buffeting gusts affecting balance.
How Wet?
Precipitation rare if any
Chance of brief snow grains or light rain spots lower down, mainly toward east.
Cloud on the hills?
Risk often capping some tops
Patchy cloud mostly above 700-800m, most common onto higher eastern slopes, but perhaps frequent on tops. More often clear hills toward west Wales.
Chance of cloud free summits?
60%
Sunshine and air clarity?
Mix of cloud and sun, best in west, often sunny near to Cardigan Bay and in Pembrokeshire. Visibility good, though some haze likely.
How Cold? (at 750m)
0 or -1C, small variation with height. Feeling like -10 to -15C directly in the wind.
Freezing Level
Near freezing all elevations from dawn, staying mostly sub-zero above 600m, but above freezing some western slopes.
Planning Outlook
Christmas Day will be dry: easterly winds are dominant, strongest in England and Wales and most cloud east of the high tops: may be fairly sheet-like sometimes, though variably more extensive or broken, best of sun breaks in western areas. Turning cooler too, the coldest air in England and Wales with freezing levels reaching as low as 300-600m in east Wales, though poorly defined. High pressure stays put to the north into the weekend, maintaining dry weather, easterly winds, and mixed cloud and sunshine, most of the cloud in eastern areas. Temperatures will be variable, becoming milder for a time in England and Wales, with poorly defined freezing levels.