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
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.
Cool to mild
Air temperature 8 to 12C on higher terrain. Comfortable temperatures on lower terrain, but feeling chilly if exposed to wind higher up, especially if stationary. Pack extra layers.
Strong warm sunshine
High UV levels, feeling very warm when ascending, beware of dehydration and sunburn.
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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.
Cool to mild
Air temperature 8 to 12C on higher terrain. Comfortable temperatures on lower terrain, but feeling chilly if exposed to wind higher up, especially if stationary. Pack extra layers.
Strong warm sunshine
High UV levels, feeling very warm when ascending, beware of dehydration and sunburn.
Viewing Forecast For
Brecon Beacons
Tuesday 19th August 2025
Last updated
Mon 18th Aug 25 at
4:31PM
Summary for all mountain areas
A cooler feeling day with a rather gusty east to north-east airflow. An extensive cloud sheet, with local drizzle, covering many hills from dawn, but some westernmost hills still clear. Low cloud will burn back to eastern and northern hills, with sun most widely in the west, but low cloud persisting for parts of coastal western Scotland.
Headline for Brecon Beacons
Breezy, feeling cooler. Some hazy sun, but also risk showers.
How windy? (On the summits)
Easterly 15 to 20mph, but gusty 25-30mph around some higher tops and through elevated passes.
Effect of the wind on you?
Noticeably breezy and feeling cool in exposure, gusts on some slopes may start to affect comfortable walking.
How Wet?
Patchy rain, mostly south
Patchy rain from high cloud toward the south, risk more frequent early in the day in Pembrokeshire before clearing offshire. Local shower elsewhere.
Cloud on the hills?
Some cloud in morning clearing
Patchy cloud banks may drift in on wind, may cover some eastern slopes for a few hours morning above 600-700m, increasingly will lift, thin and break to leave the hills clear into middle of day.
Chance of cloud free summits?
60% rising to 90%
Sunshine and air clarity?
Hazy sun best in west all day, occasional hazy sun breaking through in east. Visibility very good.
How Cold? (at 750m)
12 to 15C, then dropping towards 9C overnight.
Freezing Level
Above the summits
Viewing Forecast For
Brecon Beacons
Wednesday 20th August 2025
Last updated
Mon 18th Aug 25 at
4:31PM
How windy? (On the summits)
Northeasterly 15-25mph, occasional stronger gusts over high tops.
Effect of the wind on you?
Fairly small, though buffeting gusts will blow over high tops at times.
How Wet?
No rain expected
Cloud on the hills?
Morning cloud clears the summits
From dawn, patchy cloud banks from 600-700m, more widespread over eastern hills. Lifting and breaking through morning for cloud free summits.
Chance of cloud free summits?
50% rising above 90%
Sunshine and air clarity?
From dawn, glimpses of sun, best in the west; becoming mostly sunny. Very good visibility, some haze east.
How Cold? (at 750m)
10C rising to 15C. Northern and easternmost hills generally cooler than southern hills.
Freezing Level
Above the summits
Viewing Forecast For
Brecon Beacons
Thursday 21st August 2025
Last updated
Mon 18th Aug 25 at
4:31PM
How windy? (On the summits)
North-easterly 20 to 25mph in morning, occasionally higher in gusts, but hour by hour easing down to 15mph afternoon.
Effect of the wind on you?
Blustery and gusty with marked wind chill in the morning. Becoming mostly small into the afternoon.
How Wet?
No rain expected
Cloud on the hills?
Mostly clear
Good shelter within the north-easterly airflow will afford generally well broken and elevated cloud bases with hills mostly clear.
Chance of cloud free summits?
80%
Sunshine and air clarity?
Sunshine coming through increasingly widely. Sky may fill in with cloud in afternoon for a time. Visibility very good or excellent.
How Cold? (at 750m)
8C lifting to 12C
Freezing Level
Above the summits
Planning Outlook
High pressure centred toward the northwest this week, before building overhead again toward weekend. East to northeasterly winds prevailing, gusty for periods, easing out later in week. Extensively dry with sunshine best in west, low cloud for periods northern and eastern mountains with occasional drizzle. Still very dry underfoot with significant fire risk. Turning cooler through midweek, mountain temperatures falling, chilly into the valleys and glens pre-dawn, risk slight frost in Highland glens. Fine weather likely next weekend too; will likely begin to break down from the west into the following week, but uncertainty on timings of such a transition.