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.
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.
Clear
Excellent or superb visibility, no navigation issues.
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.
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.
Clear
Excellent or superb visibility, no navigation issues.
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 23rd March 2026
Last updated
Sun 22nd Mar 26 at
4:07PM
Summary for all mountain areas
Wind speed increasing significantly across Scotland, becoming severe-gale force over mountains into afternoon. Rain and briefly some snow on tops moving in from the west. England and Wales dry, with sun through a veil of high cloud, also increasingly windy - upland gales evening into night.
Headline for Brecon Beacons
Wind increasing. Dry, hills clear, weak sun.
How windy? (On the summits)
Variable 10mph or less early morning, soon becoming south-southwesterly, 20mph by noon. Increasing further during afternoon, reaching 30mph, then from dusk 40mph higher tops.
Effect of the wind on you?
Mostly small, but tending to feel more blustery with time, deteriorating further into evening and night.
How Wet?
Precipitation not expected
Cloud on the hills?
Little if any until night
Chance of odd fragments briefly after dawn on some slopes mainly toward southeast, all clearing. Late evening into night, cloud increasingly forming and lowering over hills.
Chance of cloud free summits?
90%
Sunshine and air clarity?
Sunshine tending to weaken as high cloud thickens, may become obscured afternoon. Visibility excellent.
How Cold? (at 750m)
1C rising to 5C by late afternoon. As wind increases, chill factor toward dusk feeling like -3C in exposure.
Freezing Level
Close to freezing above 800m, plus frost inland valleys around dawn. Lifting above freezing to highest tops during morning.
Viewing Forecast For
Brecon Beacons
Tuesday 24th March 2026
Last updated
Sun 22nd Mar 26 at
4:07PM
How windy? (On the summits)
Southwesterly 40 to 50mph, reaching 60mph higher tops for a few hours during day.
Effect of the wind on you?
Arduous to difficult conditions across the hills, mobility challenging in exposure. Significant wind chill.
How Wet?
Drizzly rain in places, risk later heavier
Patchy drizzly rain mostly west and southwestern areas, amounts small much of day. Risk later in day of steadier and heavier rain moving in from the northwest.
Cloud on the hills?
Extensive
Shrouding the hills widely, often from 300-400m upward west and southwest of Brecon. Higher bases mostly above 600m toward Black Mountains and mid Wales.
Chance of cloud free summits?
20%
Sunshine and air clarity?
Generally cloudy, some brighter moments mainly morning and in east Wales. Visibility good where dry below cloud, reducing if in rain, may become poor.
How Cold? (at 750m)
5C, lowering later afternoon to 2C. Feeling like -8 to -12C in the wind.
Freezing Level
Above the summits all day, then after dark into evening dropping rapidly onto tops to around 600-700m.
Viewing Forecast For
Brecon Beacons
Wednesday 25th March 2026
Last updated
Sun 22nd Mar 26 at
4:07PM
How windy? (On the summits)
Northwesterly 35 to 50mph, varying speeds with squally gusts around showers.
Effect of the wind on you?
Walking often impeded, frequent buffeting, in places more arduous over higher exposed terrain. Significant wind chill.
How Wet?
Frequent hail and snow
Showery snow and hail falling to lower slopes, frequent in west Wales from dawn, but increasingly widespread across the region. Risk of isolated thunder & lightning.
Cloud on the hills?
Varying over tops
Cloud base changing, mostly confined to highest summits above 700-800m and often lifting above. Brief patches to 600m in showers.
Chance of cloud free summits?
40%
Sunshine and air clarity?
Brief bursts of bright sun, mostly east in morning. Visibility intermittently very good, but appalling at times in showers with brief whiteout over tops.
How Cold? (at 750m)
-1 or -2C, slight rise into afternoon. Wind chill feeling like -12 to -15C on tops.
Freezing Level
500m from dawn, lifting to 700m, slightly higher away from showers.
Planning Outlook
Cold, wintry conditions across all mountains into midweek - significant chill factor from gale force west then northwesterly winds. Showery hail and snow falling to increasingly lower elevations in the Highlands on Tuesday, whilst a band of heavy rain moves slowly southward over England & Wales. Hail and snow showers extend southwards into Wednesday, by then below freezing on all tops above 600-700m. Fewer showers by Thursday for many, though further snow then rain moves into western Scotland. Temperature and freezing level then varying as changeable westerlies prevail for Scotland through the weekend into early next week with periods of upland gales widely, accompanied by spells of rain, hill snow and hail showers; some windows of drier weather more often affect England & Wales.