News
More rain and snow on the way
After a brief respite another spell of potentially disruptive weather is on the way for parts of the UK.
Read moreSt-Athan (Vale of Glamorgan) weather
Find a forecast
Forecast days
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Today. Maximum daytime temperature: 7 degrees Celsius; Minimum nighttime temperature: 7 degrees Celsius. Fog. Sunrise: 08:01; Sunset: 16:52. UV: Low; Pollution: Low; No pollen data.
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Wednesday 27 January. Maximum daytime temperature: 10 degrees Celsius; Minimum nighttime temperature: 8 degrees Celsius. Fog changing to drizzle by lunchtime. Sunrise: 08:00; Sunset: 16:54. UV: Low; Pollution: Low; No pollen data.
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Thursday 28 January. Maximum daytime temperature: 11 degrees Celsius; Minimum nighttime temperature: 8 degrees Celsius. Drizzle changing to cloudy by lunchtime. Sunrise: 07:58; Sunset: 16:56. UV: Low; Pollution: Low; No pollen data.
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Friday 29 January. Maximum daytime temperature: 10 degrees Celsius; Minimum nighttime temperature: 3 degrees Celsius. Light showers changing to sunny intervals in the afternoon. Sunrise: 07:57; Sunset: 16:58. UV: Low; Pollution: Low; No pollen data.
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Saturday 30 January. Maximum daytime temperature: 6 degrees Celsius; Minimum nighttime temperature: 0 degrees Celsius. Light rain changing to sunny intervals by late morning. Sunrise: 07:55; Sunset: 17:00. UV: Low; Pollution: Low; No pollen data.
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Sunday 31 January. Maximum daytime temperature: 7 degrees Celsius; Minimum nighttime temperature: 5 degrees Celsius. Cloudy changing to light rain by lunchtime. Sunrise: 07:54; Sunset: 17:01. UV: Low;
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Monday 1 February. Maximum daytime temperature: 10 degrees Celsius; Minimum nighttime temperature: 7 degrees Celsius. Light rain. Sunrise: 07:52; Sunset: 17:03. UV: Low;
Seven day forecast for St-Athan
Today (26 January 2021)
| Time | Now | 22:00 | 23:00 |
|---|---|---|---|
| Weather symbol |
|
|
|
| Chance of precipitation | 20% | 20% | 20% |
| Temperature (°C) |
8°
|
8°
|
8°
|
| Feels like temperature (°C) | 6° | 5° | 5° |
| Wind direction and speed (miles per hour) |
W
8
|
W
6
|
W
8
|
| Wind gust (miles per hour) | 18 | 14 | 15 |
| Visibility | VP | VP | VP |
| Humidity | 99% | 100% | 100% |
| UV | - | - | - |
Wednesday (27 January 2021)
| Time | 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Weather symbol |
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|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Chance of precipitation | 30% | 30% | 40% | 60% | 40% | 40% | 40% | 30% | 30% | 30% | 30% | 40% | 30% | 30% | 30% | 20% | 30% | 80% | 90% | 90% | 90% | 90% | 80% | 80% |
| Temperature (°C) |
7°
|
7°
|
8°
|
8°
|
7°
|
8°
|
8°
|
8°
|
8°
|
8°
|
8°
|
8°
|
9°
|
9°
|
9°
|
9°
|
9°
|
9°
|
9°
|
9°
|
9°
|
9°
|
9°
|
9°
|
| Feels like temperature (°C) | 5° | 5° | 6° | 6° | 6° | 6° | 6° | 6° | 6° | 6° | 6° | 6° | 6° | 7° | 7° | 7° | 8° | 8° | 8° | 8° | 7° | 7° | 7° | 7° |
| Wind direction and speed (miles per hour) |
W
7
|
W
8
|
W
6
|
W
6
|
W
5
|
W
7
|
W
7
|
W
7
|
W
7
|
W
7
|
WSW
7
|
WSW
8
|
WSW
8
|
WSW
8
|
WSW
8
|
WSW
8
|
WSW
6
|
WSW
4
|
SE
4
|
ESE
4
|
ESE
5
|
SE
6
|
S
6
|
SSW
8
|
| Wind gust (miles per hour) | 16 | 18 | 15 | 15 | 13 | 16 | 17 | 16 | 16 | 16 | 16 | 18 | 18 | 17 | 17 | 16 | 13 | 9 | 7 | 8 | 10 | 12 | 15 | 19 |
| Visibility | VP | VP | VP | VP | P | VP | VP | VP | VP | VP | VP | VP | VP | VP | VP | VP | P | P | P | P | M | M | P | P |
| Humidity | 100% | 100% | 100% | 100% | 100% | 100% | 100% | 100% | 100% | 100% | 100% | 100% | 100% | 100% | 99% | 99% | 100% | 99% | 99% | 99% | 99% | 98% | 99% | 99% |
| UV | - | - | - | - | - | - | - | - | - | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | - | - | - | - | - | - | - |
Thursday (28 January 2021)
| Time | 00:00 | 03:00 | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|---|---|
| Weather symbol |
|
|
|
|
|
|
|
|
| Chance of precipitation | 80% | 90% | 40% | 50% | 10% | 20% | 60% | 70% |
| Temperature (°C) |
9°
|
10°
|
10°
|
10°
|
10°
|
9°
|
9°
|
9°
|
| Feels like temperature (°C) | 7° | 7° | 6° | 5° | 6° | 6° | 6° | 6° |
| Wind direction and speed (miles per hour) |
SW
9
|
SW
13
|
WSW
19
|
W
20
|
W
19
|
WSW
15
|
WSW
11
|
SSW
10
|
| Wind gust (miles per hour) | 20 | 28 | 38 | 39 | 38 | 30 | 22 | 19 |
| Visibility | P | M | P | G | G | G | M | M |
| Humidity | 99% | 98% | 100% | 97% | 94% | 95% | 97% | 96% |
| UV | - | - | - | 1 | 1 | 1 | - | - |
Friday (29 January 2021)
| Time | 00:00 | 03:00 | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|---|---|
| Weather symbol |
|
|
|
|
|
|
|
|
| Chance of precipitation | 70% | 50% | 50% | 80% | 40% | 10% | 10% | 10% |
| Temperature (°C) |
9°
|
9°
|
8°
|
8°
|
9°
|
9°
|
8°
|
6°
|
| Feels like temperature (°C) | 5° | 5° | 5° | 4° | 5° | 6° | 4° | 3° |
| Wind direction and speed (miles per hour) |
WSW
15
|
WSW
16
|
WSW
14
|
WSW
15
|
WNW
13
|
WNW
12
|
W
8
|
SE
8
|
| Wind gust (miles per hour) | 29 | 30 | 27 | 29 | 25 | 22 | 15 | 15 |
| Visibility | G | M | M | M | G | G | G | M |
| Humidity | 96% | 93% | 94% | 94% | 92% | 87% | 92% | 92% |
| UV | - | - | - | 1 | 1 | 1 | - | - |
Saturday (30 January 2021)
| Time | 00:00 | 03:00 | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|---|---|
| Weather symbol |
|
|
|
|
|
|
|
|
| Chance of precipitation | 50% | 70% | 50% | 20% | 10% | 10% | 10% | <5% |
| Temperature (°C) |
6°
|
5°
|
4°
|
3°
|
5°
|
6°
|
3°
|
2°
|
| Feels like temperature (°C) | 1° | 0° | -1° | -2° | 1° | 1° | 0° | -1° |
| Wind direction and speed (miles per hour) |
E
11
|
ENE
14
|
ENE
15
|
ENE
15
|
ENE
14
|
NE
13
|
NE
9
|
NE
8
|
| Wind gust (miles per hour) | 21 | 26 | 28 | 27 | 27 | 25 | 17 | 14 |
| Visibility | M | M | G | G | VG | VG | VG | VG |
| Humidity | 91% | 89% | 88% | 84% | 75% | 68% | 78% | 82% |
| UV | - | - | - | 1 | 1 | 1 | - | - |
Sunday (31 January 2021)
| Time | 00:00 | 03:00 | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|---|---|
| Weather symbol |
|
|
|
|
|
|
|
|
| Chance of precipitation | 10% | 10% | 10% | 20% | 50% | 50% | 80% | 80% |
| Temperature (°C) |
2°
|
1°
|
2°
|
3°
|
5°
|
6°
|
6°
|
7°
|
| Feels like temperature (°C) | -2° | -2° | -2° | -1° | 1° | 2° | 2° | 2° |
| Wind direction and speed (miles per hour) |
NE
7
|
ENE
8
|
ESE
9
|
SSE
10
|
SSE
12
|
SSE
13
|
S
14
|
S
14
|
| Wind gust (miles per hour) | 13 | 14 | 16 | 19 | 23 | 25 | 26 | 28 |
| Visibility | VG | VG | G | G | G | G | M | M |
| Humidity | 86% | 88% | 88% | 88% | 82% | 83% | 88% | 90% |
| UV | - | - | - | 1 | 1 | 1 | - | - |
Monday (1 February 2021)
| Time | 00:00 | 03:00 | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|---|---|
| Weather symbol |
|
|
|
|
|
|
|
|
| Chance of precipitation | 80% | 70% | 60% | 60% | 80% | 60% | 50% | 70% |
| Temperature (°C) |
6°
|
7°
|
7°
|
7°
|
9°
|
9°
|
8°
|
8°
|
| Feels like temperature (°C) | 2° | 2° | 3° | 3° | 4° | 5° | 4° | 4° |
| Wind direction and speed (miles per hour) |
S
15
|
SSW
15
|
SSW
14
|
SW
15
|
SW
14
|
SSW
14
|
SSW
13
|
SSW
13
|
| Wind gust (miles per hour) | 29 | 29 | 27 | 28 | 28 | 27 | 25 | 26 |
| Visibility | M | M | M | M | M | G | G | G |
| Humidity | 92% | 93% | 93% | 92% | 91% | 91% | 92% | 92% |
| UV | - | - | - | 1 | 1 | 1 | - | - |
WARNING
Flood warnings
Flood alerts in force
for Wales.
Wales weather forecast
Headline:
A wet outlook, with frequent rainfall and few dry interludes.
This Evening and Tonight:
Today's rain will clear to the east during the evening. It will be cloudy overnight and dry for a time, before further outbreaks of rain spread into western and southern areas from midnight, to then weaken around dawn. Minimum temperature 2 °C.
Wednesday:
A cloudy and mostly dry day, with some showers along the south coast. Further rain then arrives from the southwest later, covering the whole country overnight. Maximum temperature 10 °C.
Outlook for Thursday to Saturday:
Wet on Thursday morning, then mostly dry with a few showers before rain overnight. Showery again on Friday, with strong winds along the south coast. Dry, bright and cold Saturday.
Updated:
UK long range weather forecast
After a very cold but bright start to Sunday, rain will move in from the west later. Going into next week, unsettled conditions look likely to dominate, with low pressure systems moving in off the Atlantic. The weather will be changeable. Periods of rain or wintry showers, and strong winds are likely, especially in the west, with brief more settled spells in between. Westerly or southwesterly winds during this period will bring milder temperatures to most areas, but occasional interludes of cold northerly winds are possible. It will be on this boundary between colder and milder airmasses where any snowfall to lower levels could possibly occur. Towards the end of this period, we may see high pressure build over the north of the UK, bringing colder temperatures and wintry outbreaks.
Updated:
Although confidence at this range is low, current signals suggest that high pressure could be positioned over the north of the UK during this period. This would likely bring wintry outbreaks and colder than average temperatures to northern areas, as well as increasing the likelihood of more widespread cold spells. Any periods of milder, unsettled weather are more likely to be confined to central and southern areas, where greater than average rainfall is predicted. There is a continued risk of significant snowfall events on the boundary between colder and milder airmasses, with snow possible to low elevations.
Updated:
Nearest forecasts
- Llantwit Major 1.9 miles
- Fontygary Bay (Beach) 3.6 miles
- Cowbridge 3.9 miles
- Cardiff International Airport 4.0 miles
- Cold Knap, Barry (Beach) 6.2 miles
- Dyffryn House Gardens 6.2 miles
- Barry 6.9 miles
- Whitmore Bay, Barry (Beach) 7.2 miles
- Barry Island Pleasure Park 7.6 miles
- Southerndown (Beach) 7.7 miles