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.
Tuesday'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.
Sunshine and showers
A good amount of dry and bright weather, but scattered bursts of rain, some may be locally heavy.
Warm
Comfortable temperatures on the hills, 10 to 15C on tops, feeling pleasantly warm especially on lower ground. Beware of feeling cooler if exposed to wind on higher terrain.
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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.
Sunshine and showers
A good amount of dry and bright weather, but scattered bursts of rain, some may be locally heavy.
Warm
Comfortable temperatures on the hills, 10 to 15C on tops, feeling pleasantly warm especially on lower ground. Beware of feeling cooler if exposed to wind on higher terrain.
Viewing Forecast For
Brecon Beacons
Tuesday 15th September 2026
Last updated
Mon 14th Sep 26 at
4:29PM
Summary for all mountain areas
Clusters of showers over Scotland from dawn, a few dry, bright breaks forming, mostly south, but pulses of showers return too. A band of rain over England and Wales just at dawn soon passes east for a bright window, followed by intermittent rain, driest windows later afternoon. Cool-to-mild and breezy.
Headline for Brecon Beacons
Blustery rain just at first, then showers and dry windows
How windy? (On the summits)
Westerly 20 to 25mph, possibly 30-40mph briefly early in day. Trending northwesterly later.
Effect of the wind on you?
Often fairly small, though some blustery moments in exposure, particularly from overnight and just around dawn when walking will be strenuous with wind chill.
How Wet?
Pulses of showery rain
A band of rain passing southeastward around dawn, briefly heavy. Drier for a time, then occasional showery rain develops, most common west Wales, which may cluster together briefly.
Cloud on the hills?
Mostly higher areas in morning
Fairly extensive across higher slopes at first, ragged patches from mid-slopes up, but soon breaking to leave patches over higher slopes, then increasingly clearing. Only a few passing banks over summits during showers.
Chance of cloud free summits?
50%, rising to 70%
Sunshine and air clarity?
Often sunny, some patchy high cloud, a few periods of cloudier skies but these clearing. Visibility mostly very good.
How Cold? (at 750m)
12C at dawn, soon easing to around 10C for most of the day. Feeling just above freezing in the wind at first, wind chill effect easing.
Freezing Level
Above the summits.
Viewing Forecast For
Brecon Beacons
Wednesday 16th September 2026
Last updated
Mon 14th Sep 26 at
4:29PM
How windy? (On the summits)
Northwesterly 25-30mph, lessening and shifting westerly, 20mph and less for a time, later shifting southwesterly.
Effect of the wind on you?
Fairly small most of the day, though a blustery start in exposure.
How Wet?
Drizzle and some showers, fading
Drizzly over the Cambrians to start, as well as the high Brecon Beacons with showers drifting from the northwest. Both ease, increasingly dry through afternoon.
Cloud on the hills?
Fairly extensive to start, lifting to tops
Cloud over high terrain to start, fairly extensive Cambrians, with patchy banks to middle slopes Brecon Beacons, locally lower where sheltered. Bases will lift, cloud breaks up somewhat, likely just patches over tops afternoon.
Chance of cloud free summits?
30% rising to 60%
Sunshine and air clarity?
Patchy sun breaks out, mostly afternoon, high cloud from the west later. Good visibility.
How Cold? (at 750m)
8 to 10C, mildest east. Feeling like 1 to 3C in direct wind in the early hours, wind chill lessening.
Freezing Level
Above the summits.
Viewing Forecast For
Brecon Beacons
Thursday 17th September 2026
Last updated
Mon 14th Sep 26 at
4:29PM
How windy? (On the summits)
Westerly 25-30mph, easing towards 20mph for a few hours but also gusty.
Effect of the wind on you?
Blustery in exposure much of the day, buffeting gusts and a chilly feeling.
How Wet?
Scattered showers
A broad area of rain from overnight clears away to the east just around dawn for a day of light scattered showers. Many hills will see extended dry windows and total rainfall amounting to little.
Cloud on the hills?
Little expected
Cloud fairly extensive over high terrain before sunrise, may linger just around dawn but will soon break up to just fleeting caps over highest tops, if any.
Chance of cloud free summits?
80%
Sunshine and air clarity?
Mostly sunny, a little fair weather cloud. Very good visibility.
How Cold? (at 750m)
8 or 9C. Feeling just above freezing in strongest direct wind.
Freezing Level
Above the summits.
Planning Outlook
A brief window of brighter weather on Wednesday, though some scattered showers around and feeling fresher in cooler temperatures. Showers and strong wind return on Thursday, and then the weather stays often unsettled during the next week as westerlies prevail - areas of low pressure passing north of Scotland with frontal systems bringing bands of rain, followed by showers, wettest over western mountains in Scotland. Often windy, sustained periods of gale-force westerly winds over higher terrain; significant wind chill, particularly in the north where temperatures will occasionally approach freezing point on high Scottish tops. A brief window of high pressure may form Saturday into Sunday, and a chance of a window of higher pressure the following week, but confidence is currently low.