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
Light wind, negligible impact
Little wind or walking hardly affected by the wind, but feeling chilly if exposed on tops. 10-15mph or less.
Heavy snow and hail showers, isolated lightning
Showery precipitation, often heavy, may merge to become constant for periods. A mix of snow and hail often falling to lower slopes. Risk of very localised thunder and lightning.
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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Light wind, negligible impact
Little wind or walking hardly affected by the wind, but feeling chilly if exposed on tops. 10-15mph or less.
Heavy snow and hail showers, isolated lightning
Showery precipitation, often heavy, may merge to become constant for periods. A mix of snow and hail often falling to lower slopes. Risk of very localised thunder and lightning.
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 13th April 2026
Last updated
Sun 12th Apr 26 at
4:20PM
Summary for all mountain areas
Heavy showers with hail from dawn in northwest Scotland, snow falling as low as middle-slopes. Hail showers become widespread afternoon, a risk of isolating lightning. Cloud above most hills between showers. Chilly temperatures, slightly rising in sun, but suddenly chilly again around showers and also gusty.
Headline for Brecon Beacons
Hail showers increasingly forming, risk of lightning afternoon
How windy? (On the summits)
South-to-southwesterly 10 to 15mph, brief stronger gusts around showers.
Effect of the wind on you?
Mostly small effect on walking, but feeling chilly if exposed to breeze.
How Wet?
Hail showers forming increasingly, fairly frequent west from dawn
Fairly frequent showers into Presli and western Brecon Beacons from dawn, a scattering increasingly forming eastward, more widespread for several afternoon hours, briefly heavy with hail, snow falling onto high terrain; risk isolated thunder & lightning.
Cloud on the hills?
Often above hills
Patches of cloud forming around some upper slopes in the morning, mostly toward south; some patchy mist inland valleys as well. Lifting above the summits, but brief patches grazing upper slopes around showers.
Chance of cloud free summits?
80%
Sunshine and air clarity?
Sunshine most widely in morning in the east, patchy to the west; cloud building more widely, leaving brief bursts of sun. Visibility excellent, but briefly very poor in showers. Possibly some early haze too.
How Cold? (at 750m)
1 or 2C at dawn, rising to 4C by afternoon, but dropping a few degrees in showers. Wind chill feeling like -2 to -5C on tops.
Freezing Level
Around highest terrain at dawn, some local light frosts in northern valleys at first, the freezing level lifting above the summits as morning goes.
Viewing Forecast For
Brecon Beacons
Tuesday 14th April 2026
Last updated
Sun 12th Apr 26 at
4:20PM
How windy? (On the summits)
Southerly, 15-25mph in morning, tending to strengthen to 30-35mph much of the day, but risk 45-50mph west for a few hours.
Effect of the wind on you?
Fairly small from dawn, but becoming blustery over higher terrain, arduous-to-challenging later and feeling chilly.
How Wet?
Rising risk of patchy rain, little until later
As midday approaches, an increasing chance of patchy rain, mostly light, but a heavier burst possible. Onward into evening, more persistent rain and drizzle, likely steadier rain develops southern/west areas.
Cloud on the hills?
Mostly clear morning, filling in afternoon
Patchy cloud around some slopes early morning, local mist inland valleys at first. Briefly dispersing, but patches soon reforming where rain occurs, filling in through afternoon, middle slopes by evening, lowest south/west.
Chance of cloud free summits?
80%, lowering to 30%
Sunshine and air clarity?
Early weak sun, high cloud gradually builds to cover the sky. Visibility excellent, reducing if rain develops.
How Cold? (at 750m)
3C rising to 7C, staying lifted into night. Feeling colder later in day as wind increases.
Freezing Level
Local light frost inland valleys and sheltered higher areas around dawn. Otherwise above freezing to tops.
Viewing Forecast For
Brecon Beacons
Wednesday 15th April 2026
Last updated
Sun 12th Apr 26 at
4:20PM
How windy? (On the summits)
Southerly 35-45mph; very gusty, not just high terrain, strongest gusts approaching 50mph. Southwesterly trend later.
Effect of the wind on you?
Arduous walking with significant wind chill all day; buffeting gusts posing a persistent challenge to stability.
How Wet?
Drizzle, patchy rain, more later
A persistent drizzle over the summits most or all day, to the middle slopes early, patchy rain occasionally drifting from the southwest too. Rain sets in persistent and heavy for several hours later, may break late in the day.
Cloud on the hills?
Extensive early, some improvement
Extensive to at least middle slopes at dawn, to lower slopes or valley level southern slopes. Bases lift somewhat, 500-700m, some higher breaks afternoon, best in the north, an odd summit break possible but fleeting. Returning extensively later.
Chance of cloud free summits?
30%
Sunshine and air clarity?
Some fleeting bursts of sun afternoon, otherwise mostly cloudy. Often poor visibility in cloud and rain, locally very good moments afternoon.
How Cold? (at 750m)
8 or 9C, rising slightly, then suddenly cooling later afternoon, 5C evening. Feeling like -5 to -8C in direct wind.
Freezing Level
Above the summits.
Planning Outlook
Tuesday starts largely dry and temperatures trend milder than prior days, but rain and strengthening south-southwesterly winds return from the west later. Milder into mid-late week, but Scottish high tops above 1200m close to freezing at times. Wednesday through Friday sees unsettled conditions with showers, occasionally more persistent rain, accompanied by strong gusty winds, gales over mountains for periods, but also brighter spells between rain. With strengthening sunshine, temperatures will tend to rise several degrees during daylight, often becoming warm in the valleys; slopes north of major hill groups often milder. Higher pressure gradually builds through next weekend, bringing fewer showers and lighter winds; chilly overnight, but fairly mild spring days.