Mountain weather

Brecon Beacons

There may be weather warnings in force for the UK

Brecon Beacons Mountain weather forecast table

Confidence

High confidence in the broad scale evolution of the weather until Tuesday. Moderate confidence in the forecast from Wednesday onwards.

This evening forecast

Sunrise:
Sunset:

Staying dry with scattered cloud dissipating through the evening to leave skies clear. Winds remaining strong over summits.

Sunrise:
Sunset:
Mountain hazards

Mountain weather hazards

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

hazard Gales
Gale force winds (gusts over 50mph) make walking difficult and strenuous with a potential to be blown over by gusts. There is often a marked increase in winds through cols or on exposed ridges and summits. Distances can take longer to cover and compass bearings become harder to follow accurately.
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 Severe chill effect
Wind significantly lowers the ‘feels-like’ temperature relative to the actual temperature, with even moderate winds significantly adding to the chilling effect. Strong winds can result in a severe and debilitating wind chill many degrees below the actual temperature. This effect will be enhanced in rain or wet snow. Without protection, prolonged exposure could result in frost nip or frostbite on exposed parts of the body and/or hypothermia.
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

Mostly dry, sunny, and windy.

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

Dry with sunny spells and variable amouts of high-level cloud through the morning and afternoon. Low cloud and spells of rain will arrive from the west for the evening. A windy day with a risk of gales over summits.

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

100%.

Visibility

Generally good or very good with distant peaks and ridges clearly visibile for much of the day.

Meteorologist's view

The strong southerly winds may reach gale strength at times with gusts of 45 to 55 mph possible over high routes. The strong winds may cause buffeting and impede walking. High UV levels are possible through the afternoon during sunny spells.

Recent rainfall

Location: Neuadd (Near Pontsticill)
Altitude: 353m
Last 24 hoursLast 48 hoursLast 72 hours
0.2mm1mm1mm
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

Mainly dry with sunny spells and light to moderate westerly or southwestery winds. There is a small risk of catching the odd light shower during the afternoon.

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

60% increasing to 100% for the afternoon.

Maximum wind speed expected

S 35-40 mph gusting to 50 mph, becoming SW 25 mph gusting to 35 mph by day break. Winds continuing to ease through the day, with winds becoming WSW 15-20 mph for the afternoon.

Temperature

  • At 600m Plus 5 Celsius, dropping to Plus 7 Celsius.
  • Valley Plus 9 Celsius, rising to Plus 12 Celsius.
  • Freezing level Above summits.

Visibility

Generally good or very good, but poor or very poor in cloud.

Mountain weather information

Tuesday 7 April

Sunrise:
Sunset:

A dry and mostly sunny day with light winds. High UV levels possible in the afternoon.

Wednesday 8 April

Sunrise:
Sunset:

Another dry and sunny day is likely with light winds. High UV levels possible in the afternoon.

Thursday 9 April

Sunrise:
Sunset:

The settled spell of weather is likely to persist into Thursday which should also be dry and sunny with light winds and a risk of high UV levels during the afternoon.

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.