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.
Wednesday's Forecast
Gale force, walking arduous
Considerable buffeting, walking into the wind will be strenuous on exposed terrain, stronger gusts may knock you off your feet. 40 to 55mph.
Snow and hail showers
Periods of bright or sunny conditions mixed with showers or flurries of snow and hail. Visibility may change rapidly from excellent to very poor.
Cold
Air temperature below 0C all day on higher mountains. Significant chill factor if exposed to strong winds. Suitable protective clothing required.
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Gale force, walking arduous
Considerable buffeting, walking into the wind will be strenuous on exposed terrain, stronger gusts may knock you off your feet. 40 to 55mph.
Snow and hail showers
Periods of bright or sunny conditions mixed with showers or flurries of snow and hail. Visibility may change rapidly from excellent to very poor.
Cold
Air temperature below 0C all day on higher mountains. Significant chill factor if exposed to strong winds. Suitable protective clothing required.
Viewing Forecast For
Brecon Beacons
Wednesday 13th May 2026
Last updated
Tue 12th May 26 at
4:35PM
Summary for all mountain areas
Cold for the time of year, with a cyclonic and unstable north-westerly bringing an increasingly widespread showery day across the hills. Showers heavy, with hail and risk of isolated thunder. Snow falling above around 700m. Gusty north-westerly winds, particularly strong and turbulent in and around the showers.
Headline for Brecon Beacons
Cold, windy and showery. Showers heavy, with hail and snow tops; risk thunder.
How windy? (On the summits)
West to northwesterly 30 to 45mph, gusts in excess of 50mph at times in and around showers.
Effect of the wind on you?
Significant wind chill, very blustery, strenuous walking on high terrain, buffeting gusts making balance challenging.
How Wet?
Showery, hail, snow highest tops
Showers mostly toward west Wales early morning, but increasingly widespread, heavy bursts with hail, risk isolated thunder; snow at times falling on high tops mostly above 700m.
Cloud on the hills?
Sometimes capping tops in showers
Patchy cloud around some higher slopes in morning, mainly western areas. Most cloud often lifting above the hills, but some ragged patches to 600m around showers.
Chance of cloud free summits?
70%
Sunshine and air clarity?
Brief bursts of sun and intermittently excellent visibility, but suddenly very poor during showers.
How Cold? (at 750m)
1C rising to 4C. Wind chill feeling like -10 to -15C.
Freezing Level
Close to freezing on highest summits early morning, rising above, but lowering briefly near high tops in showers.
Viewing Forecast For
Brecon Beacons
Thursday 14th May 2026
Last updated
Tue 12th May 26 at
4:35PM
How windy? (On the summits)
North-westerly 15 to 25mph, but perhaps up to 30mph for western coastal hills.
Effect of the wind on you?
Feeling cold for mid May, with considerable chill in the north-westerly wind.
How Wet?
Showers developing widely, some hail.
Mostly dry start, before showers develop and become fairly widespread in the afternoon, Some heavy with hail.
Cloud on the hills?
Varied, but often above tops away from showers.
Given flow direction, generally well elevated bases with tops often clear. However, in and around showers, shafts of cloud may lower onto tops. Sleet tops.
Chance of cloud free summits?
60%
Sunshine and air clarity?
Sunshine best well inland early in the day. Otherwise, fleeting glimpses between the showers. Visibility very good, but poor in showers.
How Cold? (at 750m)
2C
Freezing Level
Above the summits
Viewing Forecast For
Brecon Beacons
Friday 15th May 2026
Last updated
Tue 12th May 26 at
4:35PM
How windy? (On the summits)
Northerly 15 to 25mph, strongest around dawn when perhaps some tops up at 30mph.
Effect of the wind on you?
May impede walking at times, mainly in the morning when the wind chill factor will be most pronounced.
How Wet?
A few showers, transferring inland.
A few showers, perhaps some hail, with snow over the tops initially. Showers well scattered and generally transfer through day from the coast to well inland.
Cloud on the hills?
Occasional patches tops
Generally bases lifting through day and well elevated, but occasional patches will cover tops at times, perhaps frequent for a time morning west of Brecon.
Chance of cloud free summits?
70%
Sunshine and air clarity?
Patchy sun, best early morning and west coast afternoon. Visibility very good, but lowering in showers.
How Cold? (at 750m)
3C
Freezing Level
Above the summits
Planning Outlook
Staying notably chilly for mid-May through this week as air from the north-northwest prevails, with showers heavy at times and containing hail with snow over the tops, but over the weekend a front will edge in and bring a change to westerly winds. Next week may see ridging across England and Wales giving drier conditions, but occasional rain and blustery south-westerly winds for Scotland.