Pen Y Fan and Corn Du from Storey Arms walk

A classic, and very popular, short walk climbing up to the two highest peaks in the Brecon Beacons along an engineered path.

Hiking Weather

10 Day Forecast for Storey Arms


Mostly dry but increasingly cloudy.


There will be some sunny spells through the morning. However, cloud and hill fog will steadily increase from the south. It will stay mostly dry, but the odd spot of drizzle is possible over the hills where the cloud thickens. Maximum Temperature 13C.


A mostly dry but cloudy night with hill fog in places. Turning a little breezier with the cloud lifting a little towards morning. It will be mild again for all. Minimum Temperature 5C.


Breezy, dry and bright to start with some sunny spells. Turning cloudier from the west with a few outbreaks of rain. Possibly turning drier and brighter later in the west. Maximum Temperature 11C.

Outlook for Monday to Wednesday:

Bright spells and someshowers on Monday. Dry and bright with lighter winds on Tuesday, but somewhat colder. Breezy with a spell of rain on Wednesday, drier later and milder again.

Day 6 to 15

Many places will stay dry with sunny spells on Thursday and Friday. The far west and northwest is likely to be cloudier and breezier, with some rain and drizzle. Temperatures will widely be above the seasonal average, but sometimes they will be tempered in the north and west by the wind. Towards the end of Februarary and beinging of March, there will probably be a good deal of dry and bright weather across the south and east, but morning fog is likely here. It will be more changeable in the northwest, with the risk of gales, although some drier interludes are possible here. Temperatures are most likely to be mild overall, but overnight frosts will be likely, with a small chance of a colder spell developing in the east later.

Day 16 to 30

For the start of March we are likely to continue to see Atlantic frontal systems mainly affecting northern and western parts, but these will occasionally move further east across the rest of the UK as more active features, with strong winds and rain at times. However, many southern and eastern parts of the UK should remain predominantly settled throughout. Any snow looks most likely to be confined to higher ground in the north, although there remains a small chance of snow to low-levels elsewhere, should a continental easterly airflow develop. Temperatures are likely to remain mild overall, although some night frosts are likley in quieter periods.

Met Office : WL : 2019-02-16T02:35:38

Issued: 0600 on 2019-02-16 for Brecon Beacons


Windy. Dry and bright start but low cloud and patchy rain spreading north.

Summary A dry and bright start but clouding over in the morning with patchy light rain or drizzle spreading north over the Brecon Beacons by the end of the afternoon, mainly affecting upslopes in the west of the area. Turning dry again with clear spells in the evening. Windy at times on mountain tops and over ridges.
Chance of Cloud free tops 60% at first with patchy low cloud becoming almost nil by midday as low cloud becomes extensive, bases 400 or 500m.
Ground conditions
Visibility Good at first away from any low cloud becoming generally hazy or poor by early afternoon as patchy rain or drizzle arrives.
Gales: Low Likelihood
Severe Chill Effect: Low Likelihood
Poor Visibility: High Likelihood
060708 091011 121314 151617 181920 212223
Weather Partly cloudy (night) Sunny intervals Cloudy Drizzle Fog Fog
Rain 20% 20% 30% 60% 50% 30%
Temp (tops) 5 5 6 7 7 6
Wind (tops) 25 24 25 23 23 26
Freezing Level 1100m 1100m 1900m 2000m 1900m 1900m
Day 1

Very windy with summit gales. A cloudy but dry start to the morning then outbreaks of rain expected for a few hours, this mostly light and not amounting to much. Becoming dry in the afternoon with bright or clear spells coming through.

Ice Above summits.
Visibility Hazy in the morning with extensive low cloud, becoming good at most levels in the afternoon.
Wind South or southwest average 25-35mph, gusts 50mph on summit and exposed ridges.
Temp Plus 6C falling to Plus 3C later. (at high level)
Day 2

Bright spells and passing showers. Strong southwesterly winds on the tops with significant wind chill. Freezing level just above the summits.

Day 3

Mainly dry and bright with much lighter winds than Monday.

Day 4

Dry and bright but windy on the summits.

Data: Met Office