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.
Thursday'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.
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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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.
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
Thursday 14th May 2026
Last updated
Wed 13th May 26 at
4:30PM
Summary for all mountain areas
Another cold day for May with considerable chill factor in exposure to brisk northerly winds. Showers focused on north-facing areas in the morning, but forming increasingly widely, falling as snow on Scottish Munros, at times higher tops elsewhere; heavy bursts with hail, isolated thunder.
Headline for Brecon Beacons
Chilly and windy. Increasingly showery with hail, isolated lightning
How windy? (On the summits)
Northwesterly 25mph, but up to 30mph for western coastal hills, some stronger squally gusts around showers. Tending to increase in west later to 35mph.
Effect of the wind on you?
Considerable wind chill for mid-May. At times walking becoming uncomfortable in exposure on high tops.
How Wet?
Showers developing widely, some hail, risk thunder
Showers focused on western areas in morning. After mostly dry start south and east, showers develop and become fairly widespread into middle of day. Some heavy with hail. Risk isolated thunder & lightning.
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.
Chance of cloud free summits?
70%
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 rising to 4 or 5C afternoon.. Feeling like -5 to -8C directly in wind.
Freezing Level
Above the summits
Viewing Forecast For
Brecon Beacons
Friday 15th May 2026
Last updated
Wed 13th May 26 at
4:30PM
How windy? (On the summits)
Northerly 15 to 25mph, strongest around dawn when some western 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?
Brief local showers
One or two showers mostly near Cardigan Bay early morning, here fading. Well scattered brief showers forming inland middle of day and afternoon, but often dry.
Cloud on the hills?
Little if any
Some patches capping higher western tops in the morning, but bases rising to clear above most or all tops by middle of day onward.
Chance of cloud free summits?
80%
Sunshine and air clarity?
Patchy sun, best early morning in south, then improving near west coast afternoon. Visibility excellent.
How Cold? (at 750m)
3 or 4C. Feeling like -7C directly in early wind.
Freezing Level
Above the summits
Viewing Forecast For
Brecon Beacons
Saturday 16th May 2026
Last updated
Wed 13th May 26 at
4:30PM
How windy? (On the summits)
Westerly 10 to 15mph. Becoming southwesterly, rising a little during day to 15-20mph.
Effect of the wind on you?
Mostly small.
How Wet?
Rain develops
One or two brief showers may develop, otherwise largely dry until later afternoon. Patchy rain moving in from west, risk becoming more persistent later western areas, then extending further eastward.
Cloud on the hills?
Mostly little until later
Rare patchy cloud briefly on western tops in morning, otherwise clear. As rain develops, cloud tending to fill in with time over higher western slopes.
Chance of cloud free summits?
80%
Sunshine and air clarity?
Sun weakens as high cloud thickens during day, more overcast afternoon. Visibility excellent, reducing western areas as rain develops.
How Cold? (at 750m)
2C rising to 5C afternoon.
Freezing Level
Close to freezing on highest summits and inland valleys at dawn. Rising further above freezing to tops.
Planning Outlook
Becoming gradually less cold into the weekend as northerly winds ease and then switch toward west-southwesterly. Fewer showers by Friday with sunny spells. A dry start to Saturday, frost at dawn where skies are clear. Rain and lowering cloud moves onto west coast areas during Saturday, persistent rain later western Scotland. By Sunday and Monday, areas of showery rain will pass eastwards during the daytimes, leaving western areas generally drier with cloud breaks afternoon-evenings. South-southwesterlies then prevail for a few days next week, with rain at times Tuesday and Wednesday on western hills, particularly Scotland. A drier and warmer theme later in the week as higher pressure builds.