Mountain weather

Brecon Beacons

There may be weather warnings in force for the UK

Brecon Beacons Mountain weather forecast table

Confidence

High for a rather unsettled theme and for spells of rain, but lower confidence for timings

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Sunset:
Mountain hazards

Mountain weather hazards

Hazards apply at or above 300m, reflecting the more severe conditions which can occur at altitude.

hazard Poor visibility
Poor visibility presents challenging route finding conditions. Visibility could be significantly less than 50 metres in all directions with few or no visual references, especially on featureless moors or plateaux. Distances become hard to judge and cliff or cornice edges can be difficult to recognise. These conditions require good navigational skills. There is a risk of white-out conditions when mist or fog is combined with extensive snow cover.

hazard Heavy persistent rain
Heavy and persistent rain can lead to drenched clothing and footwear with waterproofs often becoming soaked through, especially if accompanied by strong winds. This can lead to significant loss of body heat and an increased likelihood of hypothermia. Terrain may turn increasingly boggy underfoot while streams can flood and become impassable. There may also be a risk of flooding in valleys or glens. If there is snow cover, a heightened avalanche hazard is possible and avalanche reports should be consulted where available.
hazard Strong sunlight
Harmful UV levels from sunlight increase with altitude giving a greater risk of sunburn and eye damage, even on some overcast days. On breezy days, the cooling effect of wind on exposed skin may disguise any feeling of sunburn until it is too late. If there is snow cover, glare increases the effect of UV rays especially on the eyes. It is advisable to wear sun block, protective clothing such as a long-sleeved top and hat and have good quality eye protection.

Mountain weather forecast

A mainly dry start but rain soon spreading in, turning to sunny spells and a few showers in the afternoon.

Wind direction and speed (mph)
Altitude above mean sea level
Wind gust (mph)
Altitude above mean sea level

Altitude above mean sea level

Altitude above mean sea level

Additional weather information

Meteorologist's view

Temperatures in valleys perhaps as low as 3 Celsius at first then a reasonably mild day, but damp and murky for a time in morning.

Weather

Rain mostly clearing away in early hours, then generally dry with a few clear spells and turning chilly. Then a mostly dry and quite bright start to the day but cloud will soon thicken and a band of rain will move east over all parts during the morning, with some heavy rain for a time. Becoming brighter in the afternoon with sunny spells and a few showers, but cloudier in the evening with greater risk of showers.

Chance of cloud-free mountain/hill tops at 600m

30% improving to 70% overnight but falling 20% in the morning with cloud down to 400 or 500m. Becoming 90% in afternoon with cloud lifting and breaking, though chance lowering in evening with greater amounts of cloud down to 500m

Visibility

Generally good, but poor in rain and some reductions in showers.

Recent rainfall

Location: Neuadd (Near Pontsticill)
Altitude: 353m
Last 24 hoursLast 48 hoursLast 72 hours
0mm21.4mm32mm
Measurement date:

Rainfall data provided by Natural Resources Wales. The Met Office is not responsible for content provided by third parties and may remove this data without warning.

Sunrise:
Sunset:

Mountain weather information

Weather

A mostly dry but rather cloudy start, but rain will spread from west in morning and rain will become heavy and prolonged in the early afternoon with conditions becoming difficult as winds also increase. Rain clearing in evening but staying mostly cloudy with occasional showers.

Chance of cloud-free mountain/hill tops at 600m

Around 60% at first and later in evening, with broken cloud down between 600 and 800m, but chance 20% or less for most of the day with persistent cloud down to 400 or 500m.

Maximum wind speed expected

Southwest 30 gust 40mph increasing 40-50mph in morning with gusts 65mph on the higher tops. Decreasing 25-30 gust 40mph in evening as winds become a little more westerly.

Temperature

  • At 600m Plus 5 C rising to plus 8 C
  • Valley Plus 6 C rising to plus 13 C
  • Freezing level Above the summits

Visibility

Mainly good at first and out of showers later, but often poor in rain and very poor at height with cloud lowering onto the slopes

Mountain weather information

Sunday 25 October

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Sunset:

Some bright spells, but with blustery showers, some heavy with risk of hail and thunder and rather frequent in the west. Windy with strong southwest winds turning westerly.

Monday 26 October

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Sunset:

Sunny spells and scattered showers, but drier than previous days with lighter westerly winds.

Tuesday 27 October

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Sunset:

A cloudy and rather wet and windy morning, but becoming brighter in afternoon with rain turning to showers as strong to gale force southwest winds turn west and ease a touch.

Updated at:

The summits of each peak form a long ridge with four of the peaks forming a horseshoe shape around the head of the Taf Fechan River which flows away to the south-east. The Brecon Beacons is said to be named after the ancient practice of lighting signal fires (beacons) on mountains to warn of attacks by invaders, or more recently to commemorate public and national events such as coronations or the Millennium.

For ardent mountain climbers, the Brecon Beacons National Park is among the best that Britain has to offer. While it doesn't have some of the headline-grabbing peaks of Snowdonia or the Scottish Highlands, it fits scores of slightly smaller mountains into its relatively compact 519 square mile area. These include the area's highest peak, Pen y Fan, as well as the marginally smaller Corn Du (873 metres). Both offer rather hospitable, anvil-shaped summits to those who reach the top, with plenty of space for rest and photographs, before tackling the descent.