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Brecon Beacons - Mountain weather forecast

Weather warnings

Warnings affecting Brecon Beacons over the next 5 days

Confidence

High for the mainly dry and settle theme at first, warm sunshine at times. Low for details from Thursday.

  • This evening
  • Monday
  • Tuesday
  • Further outlook

Sunday 20 May 2018

Sunset: 21:07
Moon phase: Waxing crescent

Sunny or clear spells.

Monday 21 May 2018

Weather hazards

Strong sunlight High likelihood Hide detail

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.

Learn more about strong sunlight

Headline

Mainly dry and mostly sunny.

Weather

00:00 03:00 06:00 09:00 12:00 15:00 18:00 21:00
Weather at 600m Clear night Sunny day Sunny day Sunny day Sunny intervals Sunny intervals Sunny intervals Clear night
Chance of precipitation at 600m 00% 00% 00% 00% 00% <05% 30% 30%

Wind speed and direction

00:00 03:00 06:00 09:00 12:00 15:00 18:00 21:00
Altitude above mean sea level
600m E 7 8 SE 6 7 E 5 7 E 8 12 E 7 11 NE 6 10 NE 8 11 N 8 11
300m E 3 5 E 2 3 E 2 5 E 6 11 E 5 11 NE 4 9 NE 4 8 W 3 7
Valley NE 2 3 N 2 3 NE 2 5 E 5 9 E 5 10 NE 4 8 NE 4 10 NW 3 7

Temperature

00:00 03:00 06:00 09:00 12:00 15:00 18:00 21:00
Altitude above mean sea level
600m 13 ° 11 ° 11 ° 13 ° 15 ° 16 ° 15 ° 13 °
300m 10 ° 8 ° 10 ° 16 ° 18 ° 19 ° 17 ° 13 °
Valley 10 ° 8 ° 10 ° 16 ° 19 ° 20 ° 17 ° 13 °

Feels like temperature

00:00 03:00 06:00 09:00 12:00 15:00 18:00 21:00
Altitude above mean sea level
600m 11 ° 10 ° 10 ° 11 ° 14 ° 15 ° 13 ° 11 °
300m 10 ° 8 ° 10 ° 15 ° 17 ° 18 ° 16 ° 12 °
Valley 10 ° 8 ° 10 ° 16 ° 18 ° 19 ° 17 ° 13 °

Freezing level

00:00 03:00 06:00 09:00 12:00 15:00 18:00 21:00
Freezing level i 1,900 m 1,800 m 1,600 m 1,700 m 2,200 m 2,300 m 2,300 m 2,200 m
Sunrise: 05:12
Sunset: 21:09
Moon phase: First quarter

Weather

Dry and mostly clear overnight, perhaps the odd mist or fog patch in the valleys. Any mist or fog will soon clear to leave a bright, warm day with long sunny spells expected. During the evening some isolated shower may develop.

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

90% or more, no significant cloud expected.

Visibility

Mostly good or very good.

Meteorologist's view

A warm day with plenty of water recommended.

Recent rainfall

  • Location: Neuadd (Near Pontsticill)
  • Altitude: 353m
  • Measurement date: 15:00 on Sun 20 May 2018
  • Last 24 hours: 0mm
  • Last 48 hours: 0mm
  • Last 72 hours: 0mm

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.

Tuesday 22 May 2018

Sunrise: 05:11
Sunset: 21:10
Moon phase: First quarter

Weather

Mostly clear overnight, but a few mist or shallow fog patches possible. This will soon clear to leave another bright day with sunny spells.

Maximum wind speed expected

Northeast 5 to 15mph.

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

90% or more, no significant cloud expected.

Temperature

  • At 600m Plus 10 to 15 Celsius
  • Valley Plus 8 Celsius rising to 21 Celsius.
  • Freezing level Around 2000m

Visibility

Mostly good or very good.

Wednesday 23 May 2018

Sunrise: 05:10
Sunset: 21:12
Moon phase: First quarter

Any patchy low cloud and mist will soon clear to leave a dry day with good sunny spells. Moderate east or northeast winds over the tops.

Thursday 24 May 2018

Sunrise: 05:09
Sunset: 21:13
Moon phase: First quarter

Rather cloudy with showers or some longer outbreaks of rain. Fresh or strong east or northeast winds over the tops.

Friday 25 May 2018

Sunrise: 05:07
Sunset: 21:14
Moon phase: Waxing gibbous

Rather cloudy with bright spells and the chance of the odd shower. Strong easterly winds over the tops.

Issued at:
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The Brecon Beacons is a mountain range in South Wales comprising six main peaks, with the highest peak, Pen y Fan, standing at 886 metres.

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.

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