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

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A dry and increasingly sunny weekend, but feeling colder.


A dull start this morning, with some drizzle in places. The cloud though will gradually break up during the morning, giving a much sunnier afternoon. Despite the sunshine it will be feeling cooler than of late. Maximum Temperature 12C.


A dry and largely clear night, although some low cloud may form over the hills. It will be a much colder night than of late, with a widespread ground frost. Minimum Temperature 1C.


After a chilly start, it will be a dry and fine day with plenty of sunshine. It will feel colder than Saturday, especially in the breeze. Maximum Temperature 11C.

Outlook for Monday to Wednesday:

Cloudier but largely dry on Monday, before turning increasingly showery from Tuesday onwards. A brisk easterly wind will make it feel much colder, with the showers possibly wintry at times.

Day 6 to 15

The remainder of November looks most likely to be characterised by winds blowing in from continental Europe across much of the country. This will bring variable and often large amounts of cloud, with the best of any sunshine in western areas. There is also the likelihood of some showers, these most likely focussed across eastern areas, but perhaps becoming more widespread and persistent at times. With a relatively chilly air mass in place, there is scope for some sleet or snow, but this will most likely be restricted to higher ground. The breeze will make for a marked wind chill at times in the south. With lighter winds further north, and under clear skies at night, overnight frosts are likely to become rather more extensive.

Day 16 to 30

This period is likely to begin with a continuation of cold conditions for much of the country. There is a small chance that during early December, the weather pattern may change, with fronts moving in from the Atlantic, bringing rain, interspersed with brighter, showery interludes and also less cold weather. However, should this come off, then this change will likely be short lived, with more settled conditions becoming re-established by the middle of December. This would mean a return to increased incidences of overnight frost as well as the risk of fog.

Met Office : WL : 2018-11-17T00:02:18

Issued: 0600 on 2018-11-17 for Brecon Beacons


Mainly dry with cloud breaking to give sunny or clear spells. Strengthening easterly breeze.

Summary Cloudy, misty start with the odd patch of drizzle and extensive hill fog. Cloud gradually lifts and breaks through the morning to leave a dry afternoon with long sunny spells developing, the best of these in the west. Continuing dry and clear through the evening.
Chance of Cloud free tops Close to zero at dawn, with periods or persistent cloud above about 450m and patches below, but chances improve through the morning to close to 100% by early afternoon with little or no cloud expected below summit level.
Ground conditions
Visibility Around 200m in cloud and just a few kilometres in any drizzle, otherwise mainly good becoming very good or excellent through the morning, especially in the west, with good panoramic views of surrounding hills.
Severe Chill Effect: Low Likelihood
Poor Visibility: High Likelihood
060708 091011 121314 151617 181920 212223
Weather Fog Cloudy Sunny intervals Sunny Clear night Clear night
Rain 20% 10% 00% 00% 00% 00%
Temp (tops) 8 5 7 6 5 4
Wind (tops) 19 22 21 25 27 30
Freezing Level 2000m 2400m 1800m 1800m 1800m 1300m
Day 1

Some patchy low cloud across eastern hills through the early hours and at first on Sunday morning, otherwise clear or sunny and dry.

Ice Above the summits.
Visibility Around 200m in cloud, otherwise mainly very good or excellent with good panoramic views of surrounding hills.
Wind Easterly 30-35mph, gusts around 50mph over summits, gradually easing to around 25mph.
Temp Around plus 3 Celsius. (at high level)
Day 2

Cloudy with a few light showers around, these turning increasingly wintry on the higher summits. Occasionally strong easterly winds. Freezing level just above the summits.

Day 3

Another largely cloudy day with occasional wintry showers, falling mainly as snow above 450m. Occasionally strong easterly winds. Freezing level falling to around 600m.

Day 4

Some bright or sunny spells for western fells, otherwise cloudy with wintry showers, perhaps a longer spell of precipitation later, falling mainly as snow above about 450m. Strengthening easterly winds. Freezing level around 600m.

Data: Met Office