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
Windy, walking impeded
Blustery conditions enough to give buffeting on higher terrain or affect balance on exposed ridges. 25 to 40mph.
Sunshine and showers
A good amount of dry and bright weather, but scattered bursts of rain, some may be locally heavy.
Cool to mild
Air temperature 5 to 10C 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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Windy, walking impeded
Blustery conditions enough to give buffeting on higher terrain or affect balance on exposed ridges. 25 to 40mph.
Sunshine and showers
A good amount of dry and bright weather, but scattered bursts of rain, some may be locally heavy.
Cool to mild
Air temperature 5 to 10C 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
Tuesday 16th September 2025
Last updated
Mon 15th Sep 25 at
4:31PM
Summary for all mountain areas
Strong upland winds across the UK in the morning will ease from the west into the afternoon. Frequent showers in west-coastal regions; more scattered inland with the Peak District and Cairngorms National Parks becoming or staying largely dry. Extensive cloud on most high ground. Temperatures feeling cool.
Headline for Brecon Beacons
Strong upland wind, easing. Showery
How windy? (On the summits)
Westerly 40mph at first, easing down toward afternoon to 25mph and 20mph later.
Effect of the wind on you?
Arduous conditions through morning, perhaps difficult for a time, significant wind chill. Easing into the afternoon.
How Wet?
Scattered showers
A scattering of showers coming and going for several hours, most common west and mid Wales, tending to ease off for a drier afternoon. More rain arriving in evening from the southwest.
Cloud on the hills?
Lifting to or above tops afternoon.
Banks of cloud on upper slopes from dawn, most extensive hills west of Brecon. Bases lifting and breaking and by afternoon tops will likely often clear.
Chance of cloud free summits?
30% lifting to 70%
Sunshine and air clarity?
A little hazy patches of sun, through an increasing veil of high cloud. Becoming overcast. Visibility good or very good.
How Cold? (at 750m)
8C. Feeling below freezing in the wind, near -5C highest tops.
Freezing Level
Above the summits
Viewing Forecast For
Brecon Beacons
Wednesday 17th September 2025
Last updated
Mon 15th Sep 25 at
4:31PM
How windy? (On the summits)
Still some uncertainty: Southwesterly 50mph+ in the morning, easing slightly to 35 to 40mph by midday.
Effect of the wind on you?
Expect arduous, blustery conditions, affecting ease of walking and balance on ridges for much of the day. Conditions more difficult in the morning.
How Wet?
Persistent rain morning, may fade
Very wet underfoot and streams in spate after overnight rain. Rain fairly persistent, possibly heavy for a few hours in the morning. Chance of constant rain continuing, but likely to ease to drizzle or fade completely in the afternoon.
Cloud on the hills?
Fairly extensive
Cloud likely to cover higher slopes most or all day, at times blanketing hills to mid-slopes during rain. Chance of lifting a little.
Chance of cloud free summits?
20%
Sunshine and air clarity?
Generally overcast, varied layers of cloud. Visibility reduced by rain, at times poor; some possible improvement if rain eases.
How Cold? (at 750m)
9 to 11C. Feeling sub-zero in the wind.
Freezing Level
Above the summits
Viewing Forecast For
Brecon Beacons
Thursday 18th September 2025
Last updated
Mon 15th Sep 25 at
4:31PM
How windy? (On the summits)
Forecast details very uncertain. Southwesterly 35 to 45mph, risk sustained 50mph+. Powerful turbulent gusts.
Effect of the wind on you?
Arduous or difficult walking conditions will make progress challenging. Powerful gusts, especially in passes, may blow you over. Marked wind chill.
How Wet?
Likely persistent rain and drizzle
Persistent rain or heavy rain likely toward the west and south of Brecon, may encroach further inland. At very least, most places persistently damp with constant drizzle. Smallest amounts eastern mid-Wales, drier at times.
Cloud on the hills?
Extensive where raining
Extensive cloud down to lower west-coastal slopes where in rain. Covering the hills widely, highest bases easternmost hills.
Chance of cloud free summits?
20%
Sunshine and air clarity?
Little or no sunshine in many places. Hazy particularly over the Bristol Channel, visibility poor widely in rain, locally better toward eastern mid-Wales.
How Cold? (at 750m)
13C. Feeling near 0C in the wind.
Freezing Level
Well above the summits.
Planning Outlook
An ongoing unsettled outlook generally dominated by low pressure. Extensive rain and gales into midweek, likely wettest on west-coastal regions. Areas of rain and showers frequently in the forecast later in the week. Temperatures near-average, but feeling cool when exposed to wind. A chillier northwesterly may emerge by next weekend, briefly dropping near freezing on highest Scottish tops. Indications then favour higher pressure at least briefly expanding northwards early next week for some drier days, but unlikely to settle down for long.