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Cwmystradllyn

  • Light shower day 3 °C 3 °C
  • Light shower day 6 °C 1 °C
  • Light shower day 4 °C 3 °C
  • Sunny intervals 5 °C 2 °C
  • Light shower day 5 °C 1 °C
  • Cloudy 7 °C 4 °C
  • Cloudy 8 °C 7 °C
Now 15:00 16:00 17:00 18:00 19:00 20:00 21:00 22:00 23:00
Heavy shower day Heavy shower day Heavy rain Heavy rain Heavy rain Heavy rain Heavy rain Heavy shower night Cloudy Partly cloudy night
60% 70% 90% ≥95% ≥95% ≥95% ≥95% 60% <5% <5%
Temperature (°C)
2 ° 3 ° 3 ° 4 ° 4 ° 6 ° 6 ° 6 ° 6 ° 5 °
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Feels like temperature (°C) Expand
-2 ° -2 ° -1 ° -1 ° -1 ° 1 ° 3 ° 3 ° 2 ° 2 °
Wind direction, speed & gust (mph) Expand
SW 13 18 SW 13 23 SSW 14 25 SSW 16 26 S 17 29 SSW 17 29 SW 14 25 WNW 13 23 NW 15 26 NW 11 20
Visibility (E = Excellent, VG = Very Good, G = Good, M = Moderate, P = Poor, VP = Very Poor) Expand
VG G M P VP VP VP G E E
Humidity Expand
90% 90% 93% 96% 99% 99% 98% 94% 90% 90%
UV index Expand
1 1
Sunrise: 08:20 Sunset: 16:00 Moon phase: Third quarter Air pollution: 3
00:00 01:00 02:00 03:00 04:00 05:00 06:00 07:00 08:00 09:00 10:00 11:00 12:00 13:00 14:00 15:00 16:00 17:00 18:00 19:00 20:00 21:00 22:00 23:00
Cloudy Cloudy Cloudy Cloudy Light rain Light rain Light rain Light rain Light rain Heavy rain Light rain Cloudy Cloudy Sunny intervals Sunny day Light shower day Heavy rain Heavy shower night Sleet shower Light shower night Cloudy Light rain Heavy rain Light shower night
10% 10% <5% 10% 50% 60% 60% 60% 50% 90% 50% 20% 10% 10% 10% 30% 80% 70% 60% 30% 10% 50% 80% 40%
Temperature (°C)
5 ° 5 ° 5 ° 5 ° 5 ° 5 ° 5 ° 6 ° 6 ° 6 ° 6 ° 5 ° 5 ° 5 ° 4 ° 4 ° 3 ° 3 ° 2 ° 3 ° 2 ° 3 ° 3 ° 3 °
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Feels like temperature (°C) Expand
2 ° 1 ° 2 ° 1 ° 1 ° 1 ° 1 ° 1 ° 2 ° 1 ° 1 ° 0 ° 0 ° -1 ° -1 ° -1 ° -1 ° -3 ° -4 ° -4 ° -4 ° -4 ° -4 ° -3 °
Wind direction, speed & gust (mph) Expand
WNW 11 20 WNW 11 21 W 11 20 WSW 12 22 WSW 12 22 WSW 12 24 WSW 14 26 WSW 16 28 WSW 16 28 WSW 19 34 W 20 34 W 20 36 WNW 19 34 W 19 34 W 17 31 W 15 27 WSW 15 28 WSW 19 33 WNW 20 33 WNW 23 41 W 21 37 W 22 39 W 25 44 W 25 45
Visibility (E = Excellent, VG = Very Good, G = Good, M = Moderate, P = Poor, VP = Very Poor) Expand
E E E E E VG M G VG G VG E E E E E VG M E E E E VG E
Humidity Expand
90% 87% 88% 90% 92% 93% 94% 94% 93% 93% 88% 84% 79% 77% 74% 76% 81% 91% 91% 83% 82% 81% 84% 84%
UV index Expand
1 1 1 1 1 1 1
Sunrise: 08:21 Sunset: 16:00 Moon phase: Third quarter Air pollution: 3
00:00 03:00 06:00 09:00 12:00 15:00 18:00 21:00
Cloudy Overcast Light rain Cloudy Light shower day Light shower day Heavy shower night Light shower night
40% 10% 40% 30% 40% 40% 70% 40%
Temperature (°C)
3 ° 3 ° 3 ° 3 ° 4 ° 4 ° 4 ° 4 °
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Feels like temperature (°C) Expand
-3 ° -3 ° -2 ° -2 ° -1 ° -1 ° -1 ° -1 °
Wind direction, speed & gust (mph) Expand
W 23 42 W 21 38 W 18 32 WSW 16 28 WSW 16 30 WSW 14 27 W 14 24 NW 14 27
Visibility (E = Excellent, VG = Very Good, G = Good, M = Moderate, P = Poor, VP = Very Poor) Expand
E E E E E VG G VG
Humidity Expand
82% 84% 82% 87% 83% 87% 92% 91%
UV index Expand
1 1 1
Sunrise: 08:22 Sunset: 16:00 Moon phase: Waning crescent Air pollution: 3
00:00 03:00 06:00 09:00 12:00 15:00 18:00 21:00
Light shower night Light shower night Partly cloudy night Sunny day Sunny intervals Sunny intervals Partly cloudy night Light shower night
40% 30% 10% 10% 10% <5% 10% 30%
Temperature (°C)
4 ° 4 ° 3 ° 3 ° 5 ° 5 ° 3 ° 3 °
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Feels like temperature (°C) Expand
-1 ° -1 ° -1 ° -1 ° 1 ° 0 ° -1 ° -1 °
Wind direction, speed & gust (mph) Expand
NNW 14 28 NNW 15 28 NW 15 28 NW 13 26 NNW 13 25 NNW 13 25 NNW 11 22 NNW 11 22
Visibility (E = Excellent, VG = Very Good, G = Good, M = Moderate, P = Poor, VP = Very Poor) Expand
VG VG VG E E E VG VG
Humidity Expand
89% 87% 83% 80% 74% 75% 80% 81%
UV index Expand
1 1 1
Sunrise: 08:23 Sunset: 16:00 Moon phase: Waning crescent Air pollution: 3
00:00 03:00 06:00 09:00 12:00 15:00 18:00 21:00
Partly cloudy night Light shower night Partly cloudy night Sunny intervals Light shower day Light shower day Partly cloudy night Partly cloudy night
10% 40% 10% 10% 30% 30% 10% 10%
Temperature (°C)
3 ° 3 ° 3 ° 4 ° 5 ° 4 ° 3 ° 2 °
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Feels like temperature (°C) Expand
-1 ° -1 ° 0 ° 0 ° 1 ° 1 ° 0 ° 0 °
Wind direction, speed & gust (mph) Expand
NNW 10 20 NW 10 21 NW 9 17 NW 8 17 NW 10 20 NW 8 16 WNW 6 12 NNE 4 9
Visibility (E = Excellent, VG = Very Good, G = Good, M = Moderate, P = Poor, VP = Very Poor) Expand
VG VG VG VG VG VG VG VG
Humidity Expand
83% 83% 84% 85% 85% 85% 89% 90%
UV index Expand
1 1 1
Sunrise: 08:24 Sunset: 16:00 Moon phase: Waning crescent Air pollution: 2
00:00 03:00 06:00 09:00 12:00 15:00 18:00 21:00
Cloudy Fog Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy
10% 20% 20% 20% 20% 30% 20% 20%
Temperature (°C)
2 ° 2 ° 3 ° 4 ° 6 ° 6 ° 6 ° 6 °
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Feels like temperature (°C) Expand
0 ° 0 ° 0 ° 0 ° 2 ° 3 ° 3 ° 3 °
Wind direction, speed & gust (mph) Expand
SE 4 8 SSE 5 11 S 7 15 S 9 18 SSW 10 21 SW 10 21 WSW 10 21 WSW 8 18
Visibility (E = Excellent, VG = Very Good, G = Good, M = Moderate, P = Poor, VP = Very Poor) Expand
VG VP M G M G VG VG
Humidity Expand
90% 92% 93% 93% 92% 92% 92% 93%
UV index Expand
1 1 1
Sunrise: 08:25 Sunset: 16:00 Moon phase: New
00:00 03:00 06:00 09:00 12:00 15:00 18:00 21:00
Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Light rain
20% 10% 10% 10% 10% 20% 20% 50%
Temperature (°C)
6 ° 6 ° 6 ° 6 ° 7 ° 7 ° 7 ° 8 °
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Feels like temperature (°C) Expand
3 ° 3 ° 3 ° 4 ° 5 ° 4 ° 4 ° 5 °
Wind direction, speed & gust (mph) Expand
WSW 8 16 WSW 7 15 SW 7 14 SSW 8 18 SSW 10 21 S 11 23 S 12 25 S 13 27
Visibility (E = Excellent, VG = Very Good, G = Good, M = Moderate, P = Poor, VP = Very Poor) Expand
VG VG VG VG VG G G M
Humidity Expand
94% 94% 94% 94% 93% 95% 96% 97%
UV index Expand
1 1 1
Sunrise: 08:26 Sunset: 16:00 Moon phase: New

Issued at:

Forecast Summary

  • Regional
  • UK 5 days
  • UK 6-30 days

Wales

Headline:

Very cold and sunny, but turning cloudier with rain later.

Today:

A sunny, but very cold start with severe frost, ice and some freezing fog patches which will be slow to clear. Some early showers in the west will fade, but it will turn cloudier with rain later. Maximum temperature 7 °C.

Tonight:

Turning windy with rain spreading eastwards through the first part of the night. Clearer skies will follow for a time, although further heavy, showery rain will arrive later. Minimum temperature 0 °C.

Wednesday:

Windy with spells of heavy and showery rain. Turning drier and brighter through the afternoon, but further rain, perhaps with some snow will arrive overnight. Maximum temperature 9 °C.

Outlook for Thursday to Saturday:

Windy on Thursday with sunny spells and scattered showers. Turning colder through Friday and Saturday with sunny spells and some showers, mainly in the west. Frosty overnight.

Updated: 01:49 on Tue 12 Dec 2017 GMT

UK forecast for the next 5 days

Headline:

Cold and bright, but rain and hill snow arriving later.

Today:

A very cold start, with severe frost, ice and some freezing fog patches which will be slow to clear. Otherwise bright for many, but turning cloudier and windier in the west with rain and hill snow arriving later.

Tonight:

Locally heavy rain and hill snow will push eastwards overnight, with ice forming over existing snow cover. Some clearer skies, but further rain and hill snow in the west later.

Wednesday:

Windy with spells of heavy, showery rain for most, wintry over northern hills and perhaps to lower levels in the northwest later. Brighter spells in between. Gales in the southwest.

Outlook for Thursday to Saturday:

Sunny spells and blustery showers on Thursday, wintry in places. Colder on Friday and Saturday although showers becoming confined to windward coasts. Frosty overnight with a risk of ice.

Updated: 01:46 on Tue 12 Dec 2017 GMT

Outlook for the UK over the next 6-30 days

UK Outlook for Sunday 17 Dec 2017 to Tuesday 26 Dec 2017:

After a frosty start on Sunday, it will turn less cold. Cloud and outbreaks of rain are expected to spread to all areas by the end of the day, with strengthening winds and a perhaps hill snow for a time in the north. This is likely to bring a change to unsettled and milder conditions across country early next week. Through the rest of the period, generally milder but unsettled conditions are likely persist with bands of rain and hill snow interspersed by drier interludes, these most likely in the southeast. It may become very windy at times later next week with gales or severe gales in places. There remains a small chance that generally drier and colder conditions could affect southern areas at times.

UK Outlook for Wednesday 27 Dec 2017 to Wednesday 10 Jan 2018:

Generally changeable conditions look most likely persist until the end of December. Bands of rain are likely to move across the UK, interspersed with brighter showery conditions. Showers are likely to turn wintry at times, particularly in the north. It will often be windy with temperatures varying around normal. As we head into the start of January there is large uncertainty. However, a generally more settled spell of weather could become established. This would likely bring a mixture of colder and drier conditions with brief interludes of milder, wetter and windier weather. Snow is likely at times, especially in northern and central parts of the UK, as well as an increased likelihood of overnight frosts.

Updated: 01:46 on Tue 12 Dec 2017 GMT

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