Mountain weather

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Brecon Beacons Mountain weather forecast table

Confidence

High confidence for a fine Sunday. Low confidence for cloud and hill fog detail on Monday. Low confidence for any thunderstorms on Wednesday.

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.

Mountain weather forecast

Fine with 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

Meteorologist's view

Temperatures are likely to be a couple of degrees higher than shown. UV levels will be very high so sun protection is essential.

Weather

Some early cloud perhaps possible in the northwest of the Park, however in general a fine and very warm day with lengthy periods of sunshine.

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

100% all day.

Visibility

Very good views of distant hills all day.

Recent rainfall

Location: Neuadd (Near Pontsticill)
Altitude: 353m
Last 24 hoursLast 48 hoursLast 72 hours
0mm0.6mm2mm
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

After a clear start and some early sunshine, cloud is likely to move over the National park from around 8am. During the morning it may become quite low, covering the summits at times, and bringing some hill fog and drizzle. It will also be breezier than on Sunday. The cloud will lift and break up during the afternoon and winds become light again, to give some late warm sunshine.

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

Before 8 am 100% From 8am to 1500 40% with cloud often obscuring hills above 300m.

Maximum wind speed expected

15 mph with gusts of 20 mph on the summits in the cloudy spell during the morning.

Temperature

  • At 600m 8 C at dawn, rising to 12 C in the late afternoon.
  • Valley 12 C at dawn, rising to 22C in the late afternoon.
  • Freezing level Well above summits.

Visibility

Good visibility at low levels, but poor on hills above 300m above sea level, where fog down to 100m is likely.

Mountain weather information

Tuesday 15 June

Sunrise:
Sunset:

Dry weather with light winds and plenty of warm sunshine. Max Temp. 20C

Wednesday 16 June

Sunrise:
Sunset:

Sunshine and showers, possibly heavy and thundery in the afternoon. Max Temp. 22C

Thursday 17 June

Sunrise:
Sunset:

Dry but probably cloudier and less warm than recently. Max temp. 18C

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.