Mountain weather

Brecon Beacons

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Brecon Beacons Mountain weather forecast table

Confidence

High for settled conditions. Moderate for visibility.

This evening forecast

Sunrise:
Sunset:

A dry and clear night, with light winds.

Sunrise:
Sunset:
Mountain hazards

Mountain weather hazards

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

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.

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.

Mountain weather forecast

Some early isolated mist and fog, then plenty of warm sunshine.

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

Weather

Early patches of mist and fog will quickly lift to give plenty of warm sunshine through the day, with light winds.

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

100% throughout the day.

Visibility

Perhaps poor or very poor in any early mist and fog. Soon becoming very good, with nearby peaks and details clearly visible.

Meteorologist's view

Pollen and UV levels remain high through the day.

Recent rainfall

Location: Neuadd (Near Pontsticill)
Altitude: 353m
Last 24 hoursLast 48 hoursLast 72 hours
0mm0mm0mm
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 few pockets of mist are possible first thing, with blue skies soon developing. High level cloud will arrive from the south by midday, with hazy sunshine for the afternoon. Pollen and UV levels will be high.

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

100% throughout the day.

Maximum wind speed expected

Southeasterly 15 mph gusting 20 mph. At 600m, southeasterly 20-25 mph gusting 30-35 mph.

Temperature

  • At 600m Positive 09 Celsius becoming Positive 17 Celsius.
  • Valley Positive 03 Celsius becoming Positive 22 Celsius.
  • Freezing level 2000-2500m.

Visibility

Poor in any early mist becoming very good. Nearby peaks will be clearly visible.

Mountain weather information

Tuesday 23 April

Sunrise:
Sunset:

A fine and clear start to the day, however thunderstorms are possible later in the afternoon.

Wednesday 24 April

Sunrise:
Sunset:

Risk of thunderstorms and hail. Gales are likely over the peaks later.

Thursday 25 April

Sunrise:
Sunset:

Risk of thunderstorms and hail, with strong winds and isolated gales over higher ground.

Updated at:

Summit specific forecast map

Summit specific forecasts for Brecon Beacons

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.