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.
Wednesday's Forecast
Light wind, negligible impact
Little wind or walking hardly affected by the wind, but feeling chilly if exposed on tops. 10-15mph or less.
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.
Mild
Air temperature +5C or above on higher terrain. Comfortable temperatures on lower terrain, but feeling chilly if exposed to wind higher up, especially if stationary. Pack extra layers.
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Light wind, negligible impact
Little wind or walking hardly affected by the wind, but feeling chilly if exposed on tops. 10-15mph or less.
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.
Mild
Air temperature +5C or above on higher terrain. Comfortable temperatures on lower terrain, but feeling chilly if exposed to wind higher up, especially if stationary. Pack extra layers.
Viewing Forecast For
Brecon Beacons
Wednesday 26th March 2025
Last updated
Tue 25th Mar 25 at
4:00PM
Summary for all mountain areas
Southwesterly winds strengthening, reaching gale-force across Scottish mountains increasingly into afternoon. Dry for most places all day, but rain moves into northwest Highlands later in daytime. Varied cloud banks mostly over western hills. Sunniest in eastern areas.
Headline for Brecon Beacons
Dry all day, patchy cloud banks lifting. Light winds.
How windy? (On the summits)
South to southwesterly 10mph, increasing in afternoon to 15mph, later 20mph.
Effect of the wind on you?
Mostly small.
How Wet?
Rain not expected
Cloud on the hills?
Early cloud banks lifting
Mist patches some valleys and cloud banks on some hill slopes at first, tending to drift upslope, mainly south and western areas, but likely to gradually lift above hills.
Chance of cloud free summits?
50% rising to 80%
Sunshine and air clarity?
Patchwork of sun developing. Visibility very good.
How Cold? (at 750m)
6 or 7C.
Freezing Level
Above the summits; possible slight frost some valleys at dawn.
Viewing Forecast For
Brecon Beacons
Thursday 27th March 2025
Last updated
Tue 25th Mar 25 at
4:00PM
How windy? (On the summits)
Southwesterly 20 to 35mph, gusty around higher tops.
Effect of the wind on you?
Starting to affect comfortable walking in places on exposed higher terrain. Marked wind chill.
How Wet?
Patchy light rain
Small amounts of light rain or drizzle, mostly western Cambrians, may become persistent. Generally damp where in cloud. Driest eastern hills.
Cloud on the hills?
Extensive
Blanket low cloud much of the day, shrouding hills to lower elevations toward west and southwest slopes, widely 400-500m. Highest bases eastern mid-Wales, local breaks to 600m or above.
Chance of cloud free summits?
10%
Sunshine and air clarity?
Little or no sun, glimpses eastern mid-Wales. Misty widely over the hills; better visibility further east below cloud.
How Cold? (at 750m)
6C. Wind chill feeling like -4C.
Freezing Level
Above the summits
Viewing Forecast For
Brecon Beacons
Friday 28th March 2025
Last updated
Tue 25th Mar 25 at
4:00PM
How windy? (On the summits)
Westerly 25 to 40mph, sudden squally gusts during showers.
Effect of the wind on you?
Significant wind chill. Frequent buffeting over the hills, walking at times arduous where exposed.
How Wet?
Hail showers, risk lightning
Showery precipitation throughout the day, most frequent west Wales in morning, but soon widespread. Hail to lower slopes, at times snow above 700m. Heavy bursts with risk of thunder.
Cloud on the hills?
Varied over higher tops
Cloud base changing in and out of showers, mostly above 700m, clearing tops periodically, but patches to 600m in showers.
Chance of cloud free summits?
40%
Sunshine and air clarity?
Occasional sun, mostly east in morning. The air quite clear, but visibility intermittently poor in heavy showers.
How Cold? (at 750m)
0 or 1C. Wind chill feeling like -10 to -13C.
Freezing Level
Near 800m in the morning, lifting just above the highest summits, but briefly lowering again in showers.
Planning Outlook
Low pressure passing close to northern Scotland later this week brings unsettled conditions. Chilly west to northwesterly winds - often gale force on higher terrain. Temperatures fluctuating just above and below freezing over the mountains, coldest on Friday when sub-zero on all hills above 800m - heavy showers with hail, and snow on tops. Rain and some snow on highest tops on Saturday, then an improving trend from Sunday into early next week high pressure rebuilds, bringing dry weather and lighter winds. Easterly winds may develop over England & Wales.