Fan Foel, in the shade

SWC Walk 279 The Black Mountain - Y Mynydd Du (Glyntawe Circular)

11-Oct-16 • thomasgrabow on Flickr

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The Afon Giedd winds its way towards Sinc Giedd (Swallow Hole)

SWC Walk 279 The Black Mountain - Y Mynydd Du (Glyntawe Circular)[Alternative Ending via Shake Holes Route]

31-Jul-16 • thomasgrabow on Flickr

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Weather-beaten tree on Limestone Field

SWC Walk 279 The Black Mountain - Y Mynydd Du (Glyntawe Circular) [Alternative Ending via Shake Holes Route]

31-Jul-16 • thomasgrabow on Flickr

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Bannau Sir Gaer from Descent to Llyn y Fan Fach

SWC Walk 279 The Black Mountain - Y Mynydd Du (Glyntawe Circular)

11-Oct-16 • thomasgrabow on Flickr

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Glacial Moraine at the bottom of Picws Du

SWC Walk 279 The Black Mountain - Y Mynydd Du (Glyntawe Circular)

11-Oct-16 • thomasgrabow on Flickr

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Pen y Fan and Corn Du, from Llyn y Fan Fawr

SWC Walk 279 The Black Mountain - Y Mynydd Du (Glyntawe Circular)

11-Oct-16 • thomasgrabow on Flickr

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Sgwd Ddu (Black Waterfall) on the Afon Haffes (the Haffes River)

SWC Walk 279 The Black Mountain - Y Mynydd Du (Glyntawe Circular) [Alternative Ending via Shake Holes Route] (Sgwd Ddu Diversion)

12-Oct-16 • thomasgrabow on Flickr

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The Black Mountain (Y Mynydd Du) from Glyntawe walk

A spectacular ridge walk to Fan Brycheiniog, Fan Foel and Waun Lefrith. Return via a glacial valley below the ridge, or remote moorland, shakeholes and a waterfall

Hiking Weather

10 Day Forecast for Glyntawe

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A bright start on Monday, but clouding over.

This Evening and Tonight:

A few showers are likely this evening, but these will ease to leave a largely dry night with clear spells. The winds will ease too and it will turn chilly, particularly in rural spots. Minimum Temperature 1C.

Monday:

After a bright start, cloud will arrive from the west through the day. Some patchy rain is possible, particularly in the west, but for many it will remain dry. Maximum Temperature 11C.

Outlook for Tuesday to Thursday:

Tuesday largely cloudy but mainly dry. Rain will spread eastwards overnight and through Wednesday, turning lighter and patchier. Stronger winds by Thursday, and possibly some heavy rain.

Day 6 to 15

Friday looks likely to be wet and possibly very windy in the northwest, and colder and drier in the far east. There could be some snow where the colder air meets the wet weather, most likely over the hills in the north, but it may fall to lower levels in places too. Over next weekend, the weather is likely to be changeable and often windy and cloudy, with showers or longer spells of rain at times. Any snow is most likely on high ground in the north. During the following week, eastern and southern areas may become drier for a time with more sunshine but clearer colder nights would lead to some night frost. Overall, temperatures are likely to be around normal for the time of year.

Day 16 to 30

The early part of this period, including Christmas, is looking fairly changeable with showers or longer spells of rain, possibly wintry over higher ground. Temperatures look likely to be around normal for the time of year. However, later in the month and into the New Year, there is the chance of high pressure becoming established close to the UK. This would bring drier and colder weather, and a greater chance of night frosts. There remains some uncertainty about this; if the high pressure is offset to the west or east of the UK, wet and windy weather would dominate.

Met Office : WL : 2018-12-09T15:12:01

Issued: 1800 on 2018-12-09 for Brecon Beacons

Today

Cold start then dry and bright but cloud increasing with low cloud, mist and drizzle later.

Summary Dry overnight with variable cloud and a frost developing, but also perhaps the odd mist or fog patch. Any mist or fog will lift in the morning then a bright day with some sunshine, but cloud will gradually increase from the west. Low cloud, mist and drizzle is expected to become extensive in the evening
Chance of Cloud free tops 70%, with patchy cloud near or above the summits, becoming Nil to 30% after dusk as cloud thickens and lowers.
Ground conditions
Visibility Mostly good or very good, but becoming moderate or poor in the evening.
Severe Chill Effect: Low Likelihood
Poor Visibility: Medium Likelihood
060708 091011 121314 151617 181920 212223
Weather Cloudy Cloudy Partly cloudy (night) Cloudy Cloudy Dull
Rain 00% 00% 00% 00% 00% 10%
Temp (tops) 4 3 3 3 4 4
Wind (tops) 18 18 16 12 12 9
Freezing Level 1100m 1000m 1000m 1000m 1000m 1400m
Day 1

Mainly cloudy and rather misty with quite extensive low cloud and patchy drizzle, though perhaps drier and brighter for a time in the early afternoon, especially over the north of the Park. Heavier rain expected to arrive from west late evening.

Ice Above the tops
Visibility Moderate or poor, but very poor at height and in cloud.
Wind Rather variable overnight, but mainly south or southwest 10mph. Becoming southeasterly 15mph in the morning but southerly 25 gust 35mph later
Temp Plus 4 or 5 Celsius (at high level)
Day 2

Mainly cloudy with outbreaks of rain, low cloud and patchy mist, though perhaps a drier and brighter spell in the afternoon. Strong or gale force south or southeast winds over the tops.

Day 3

Cloudy with rain and extensive low cloud, though perhaps some snow on the higher peaks. Gale force south or southeast winds over the tops easing later. Freezing level falling close to summits in the morning but then rising

Day 4

Another cloudy and rather misty day, but rain will become light and patchy in the morning, although more prolonged rain likely later. Light winds at first but strong southerly winds later

Data: Met Office