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.
Thursday'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.
Sunshine and showers
A good amount of dry and bright weather, but scattered bursts of rain, some may be locally heavy.
Very warm
Warm conditions across the hills, rising above 15C on tops. Increasingly hot on lower terrain, reaching 25C+ in many valleys. Beware of dehydration.
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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.
Sunshine and showers
A good amount of dry and bright weather, but scattered bursts of rain, some may be locally heavy.
Very warm
Warm conditions across the hills, rising above 15C on tops. Increasingly hot on lower terrain, reaching 25C+ in many valleys. Beware of dehydration.
Viewing Forecast For
Brecon Beacons
Thursday 1st May 2025
Last updated
Wed 30th Apr 25 at
4:29PM
Summary for all mountain areas
Showery bursts and breezy in Scotland, notably west and northwest; risk of gales in the far north. Fells of northern England largely cloud-free with an odd spot of rain. Mostly sunny with gentler winds central and south Pennines. High cloud over clear mountains building in Wales with risk of thundery downpours evening into night.
Headline for Brecon Beacons
Hills clear with high cloud building; risk thundery downpours into evening
How windy? (On the summits)
Southerly 10-15mph, at times little wind and variable direction. Possible sudden gusts during or just before rain locally.
Effect of the wind on you?
Mostly small
How Wet?
Risk thunderstorms later
An odd spot of rain after noon as high cloud builds. Risk later of slow-moving thundery downpours, continuing into evening and night.
Cloud on the hills?
Hills clear, may form around high terrain in rain
Hills largely clear. Where rain occurs later, some cloud bases may approach high terrain.
Chance of cloud free summits?
Above 90%
Sunshine and air clarity?
Sunshine with high cloud soon building, thickening to mostly overcast by later afternoon. Good visibility, but some haze.
How Cold? (at 750m)
14C rising to 17C.
Freezing Level
Above the summits
Viewing Forecast For
Brecon Beacons
Friday 2nd May 2025
Last updated
Wed 30th Apr 25 at
4:29PM
How windy? (On the summits)
Variable or northerly, 10-15mph.
Effect of the wind on you?
Negligible
How Wet?
Possible early light rain
Remnants of previous thundery rain may leave patchy rain into the morning. Fading for a dry day.
Cloud on the hills?
Low cloud banks in morning, lifting and clearing
Varied cloud banks at different heights early morning, possible fog in some valleys at first. Soon lifting and breaking toward higher slopes, then above most or all hills into the afternoon.
Chance of cloud free summits?
20% rising to 80%
Sunshine and air clarity?
Cloud and mist around at dawn. Visibility improving to become very good, some sun breaking through frequently by afternoon.
How Cold? (at 750m)
9 or 10C, little change all day.
Freezing Level
Above the summits
Viewing Forecast For
Brecon Beacons
Saturday 3rd May 2025
Last updated
Wed 30th Apr 25 at
4:29PM
How windy? (On the summits)
Northerly 15mph at dawn. Rising towards 25mph with a slight northeasterly shift. Notable gusts.
Effect of the wind on you?
Some effects on comfortable walking, notable buffeting in gusts.
How Wet?
Little rain expected
Chance of rain after noon
Cloud on the hills?
Little if any
Isolated patches of cloud forming over highest tops in the morning. Cloud soon lifts above all terrain
Chance of cloud free summits?
Above 90%
Sunshine and air clarity?
Mostly sunny, a patchwork of cloud forming through the day. Visibility excellent.
How Cold? (at 750m)
9 to 11C
Freezing Level
Above the summits
Planning Outlook
Northerly winds will facilitate cold temperatures over the weekend; freezing levels will drop to mid-slopes for much of the Highlands by Sunday, further extending into England and Wales into the early week. Bursts of showers will accompany this transition, mainly in the north, then fading into only light showers here and there, falling as snow flurries on high terrain. Further into next week, risk spells of chilly and strong west-northwesterly winds particularly for the Highlands, some showery days; freezing level will vary. Very dry ground in places with fire risk.