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Brecon Beacons: latest wind
Saturday, 25 May 2013: dawn to dusk
Printable view Forecast issued: 0334 on Saturday, 25 May 2013
Overview for Saturday
After a cold start, it will become a dry and fine day with some good spells of sunshine developing. Small risk of an isolated shower or two through the afternoon.
| Hazards | Risk | Explanation |
|---|---|---|
| Blizzards | No Risk | |
| Heavy snow | No Risk | |
| Storm force winds | No Risk | |
| Gales | No Risk | |
| Severe chill effect | No Risk | |
| Persistent and extensive hill fog | No Risk | |
| Thunderstorms | No Risk | |
| Heavy persistent rain | No Risk | |
| Strong Sunlight | Medium | Given the prolonged sunny periods and the time of year, risk of sunburn during the day. |
key to hazards and forecast content
| Dawn to 0900 | 0900 to 1200 | 1200 to 1500 | 1500 to dusk |
 Sunny intervals |
Sunny intervals |
Sunny intervals |
 Sunny |
| 0% | 0% | 30% | 10% |
Detailed mountain weather forecast: Brecon Beacons
Saturday
Weather
Some early valley mist and low cloud will soon clear leaving a dry and bright day with prolonged sunny spells developing. Small risk of a light shower during the afternoon period. Easterly winds will be much lighter and it will feel warmer than of late.
Visibility
Generally very good or excellent, but poor in any mist and very poor in hill fog first thing.
Hill fog
Low cloud may well shroud some of the mountains through the early morning period, particularly eastern hills. However, this will soon lift and disperse with summits becoming cloud free into the afternoon.
Maximum winds above 400m
East or northeasterly 10-20mph.
Temperature
| Valleys | Plus 2 becoming 16 Celsius |
| 800 m | Plus 2 becoming 7 Celsius |
| Freezing level | Above the summits, but locally frosty through the valley floors around dawn. |
Sunday
Weather
Early valley mist will clear to leave another dry and bright day with some sunny spells developing, especially across eastern hills. However, always more in the way of cloud across western hills, especially in the morning. This cloud may well be thick enough for a shower or two in the afternoon.
Visibility
Generally good or very good, but poor in any mist and very poor in hill fog first thing.
Hill fog
Some low cloud may affect some hills through the morning, especially on western hills. However, this should lift and disperse through the late morning and early afternoon period, with many summits becoming cloud free.
Maximum winds above 400m
Generally westerly 10-15mph.
Temperature
| Valleys | Plus 2 becoming 15 Celsius |
| 800 m | Plus 5 becoming 8 Celsius |
| Freezing level | Above summits, but locally frosty through sheltered valleys around dawn. |
Outlook
Monday
Turning cloudier and more unsettled with a band of rain arriving from the west during the late morning and into the afternoon period, this may well be heavy at times on western hills. Winds will increase markedly during the late morning and early afternoon period with upland gales developing, easing later in the day.
Tuesday
Remaining unsettled through Tuesday with sunshine and showers, some of which may well be on the heavy side with the risk of thunder. Fresh to strong southeasterly winds, becoming southwesterly later.
Wednesday
The showery theme will continue as low pressure dominates the weather pattern. Some of the showers will again be on the heavy side with the risk of the odd rumble of thunder. The winds are likely to strengthen through the afternoon.
Neuadd Rain (near Pontsticill)
Altitude 353 metres
Rainfall measured at 03:00 Saturday, 25 May 2013
- Last 24 hours 0.8 mm
- Last 48 hours 3.4 mm
- Last 72 hours 3.4 mm
Rainfall data provided by the Environment Agency. The Met Office is not responsible for content provided by third parties and may remove this data without warning.
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The Enhanced Mountain forecast for Brecon Beacons has been discontinued. All forecast information for these locations can be found in the standard Mountain forecast above.
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