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.
Monday'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.
Clear
Excellent or superb visibility, no navigation issues.
Chilly
Air temperature typically 0 to 5C on higher summits. Feeling distinctly chilly on tops when stationary or where exposed to wind. Take appropriate layers.
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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.
Clear
Excellent or superb visibility, no navigation issues.
Chilly
Air temperature typically 0 to 5C on higher summits. Feeling distinctly chilly on tops when stationary or where exposed to wind. Take appropriate layers.
Viewing Forecast For
Brecon Beacons
Monday 11th May 2026
Last updated
Sun 10th May 26 at
4:28PM
Summary for all mountain areas
Cold northerly breezes, but a bright day with broken cloud lifting above the mountains and some sun. Scattered showers with snow flurries on hills. A band of showers moves south over Wales in the morning. Later in the day, westerly winds increase and cloud thickens in western Scotland with drizzly rain arriving.
Headline for Brecon Beacons
Chilly, breezy, some showers, but clearing to sunny spells.
How windy? (On the summits)
North-northwesterly 25mph in the morning, stronger gusts over 30mph for a time, gradually easing to 15-20mph afternoon, strongest west. Increasing northwesterly 25mph overnight.
Effect of the wind on you?
Blustery and distinctly chilly in exposure on higher tops and ridges. Moderating during afternoon.
How Wet?
Showers for a time, clearing
Showery rain mainly toward west Cambrians early morning. Over an hour or so in morning a scattering of showery rain passing southwards, leaving an odd brief shower mostly eastern hills afternoon, but becoming largely dry.
Cloud on the hills?
Mostly little or lifting above tops
Some patchy cloud drifting over higher slopes in the morning, but lifting mostly above the tops.
Chance of cloud free summits?
80%, rising above 90% afternoon.
Sunshine and air clarity?
Patchy sunshine mostly afternoon-evening. Visibility excellent, reduced briefly in showers.
How Cold? (at 750m)
2 or 3C early morning, rising to 5C afternoon. Feeling like -5C in the wind in morning.
Freezing Level
Above the summits.
Viewing Forecast For
Brecon Beacons
Tuesday 12th May 2026
Last updated
Sun 10th May 26 at
4:28PM
How windy? (On the summits)
Westerly 25 to 35mph, squally gusts around showers.
Effect of the wind on you?
Very blustery across the hills, at times uncomfortable walking on exposed higher terrain. Considerable wind chill.
How Wet?
Showery rain mostly west
A band of showery rain moving southeast during the day, may be frequent rain over an hour or more in west Wales. Later scattered showers.
Cloud on the hills?
Occasionally capping tops
Some cloud banks drifting over higher slopes, mostly west Wales where rain develops for a time. Then rising and breaking again.
Chance of cloud free summits?
70%
Sunshine and air clarity?
Occasional sun. Visibility often very good, but reduced in rain or showers.
How Cold? (at 750m)
4 to 6C. Feeling like -5C directly in the wind on high tops.
Freezing Level
Above the summits.
Viewing Forecast For
Brecon Beacons
Wednesday 13th May 2026
Last updated
Sun 10th May 26 at
4:28PM
How windy? (On the summits)
West to northwesterly 30 to 45mph, strongest sustained speeds likely in the morning.
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?
60%
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.
Planning Outlook
Notably chilly for mid-May across the hills this week as air from the north-northwest prevails. Frequently near or below freezing over Scottish Munros, and at times dropping to freezing on high tops in England and Wales. Wind speed will vary, but increasing at times to gale force on hills, giving significant chill factor. Broadly showery, heavy bursts with hail and thunder in places, also often falling as snow on higher mountains, at least in Scotland, intermittently elsewhere. Some more persistent precipitation especially northwest Scotland. Also some drier windows - varying locally day-to-day - away from showers cloud will lift above hills and visibility will be very good. Less windy and fewer showers suggested by next weekend into early next week.