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Read moreSt-Athan (Vale of Glamorgan) weather
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Forecast days
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Today. Maximum daytime temperature: 17 degrees Celsius; Minimum nighttime temperature: 12 degrees Celsius. Overcast. Sunrise: 04:58; Sunset: 21:35. UV: High; Pollution: Low; Pollen: Moderate.
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Saturday 26 June. Maximum daytime temperature: 20 degrees Celsius; Minimum nighttime temperature: 14 degrees Celsius. Cloudy. Sunrise: 04:58; Sunset: 21:35. UV: High; Pollution: Low; Pollen: High.
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Sunday 27 June. Maximum daytime temperature: 21 degrees Celsius; Minimum nighttime temperature: 14 degrees Celsius. Cloudy changing to heavy showers by early evening. Sunrise: 04:59; Sunset: 21:34. UV: High; Pollution: Low; Pollen: High.
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Monday 28 June. Maximum daytime temperature: 20 degrees Celsius; Minimum nighttime temperature: 14 degrees Celsius. Cloudy changing to light showers in the afternoon. Sunrise: 04:59; Sunset: 21:34. UV: Moderate; Pollution: Moderate; Pollen: High.
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Tuesday 29 June. Maximum daytime temperature: 20 degrees Celsius; Minimum nighttime temperature: 14 degrees Celsius. Overcast changing to light showers by lunchtime. Sunrise: 05:00; Sunset: 21:34. UV: Moderate; Pollution: Low; Pollen: High.
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Wednesday 30 June. Maximum daytime temperature: 22 degrees Celsius; Minimum nighttime temperature: 14 degrees Celsius. Cloudy changing to sunny intervals by late morning. Sunrise: 05:00; Sunset: 21:34. UV: High;
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Thursday 1 July. Maximum daytime temperature: 21 degrees Celsius; Minimum nighttime temperature: 14 degrees Celsius. Sunny intervals changing to cloudy by late morning. Sunrise: 05:01; Sunset: 21:34. UV: High;
Seven day forecast for St-Athan
Today (25 June 2021)
| Time | Now | 14:00 | 15:00 | 16:00 | 17:00 | 18:00 | 19:00 | 20:00 | 21:00 | 22:00 | 23:00 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Weather symbol |
|
|
|
|
|
|
|
|
|
|
|
| Chance of precipitation | 10% | 10% | 10% | 10% | 10% | 10% | 10% | 10% | 10% | 10% | 10% |
| Temperature in degrees Celsius |
15°
|
15°
|
15°
|
15°
|
15°
|
15°
|
14°
|
14°
|
14°
|
13°
|
13°
|
| Feels like temperature in degrees Celsius | 12° | 12° | 12° | 12° | 12° | 12° | 11° | 11° | 12° | 12° | 12° |
| Wind direction and speed in miles per hour |
W
14
|
W
16
|
WNW
16
|
WNW
14
|
WNW
13
|
WNW
13
|
WNW
14
|
WNW
13
|
NW
10
|
NNW
9
|
N
9
|
| Wind gust in miles per hour | 21 | 25 | 25 | 21 | 21 | 21 | 22 | 21 | 17 | 16 | 15 |
| Visibility | G | G | G | VG | VG | VG | E | E | VG | VG | VG |
| Humidity | 69% | 69% | 75% | 82% | 77% | 74% | 80% | 81% | 84% | 83% | 84% |
| UV | 6 | 6 | 5 | 4 | 3 | 2 | 1 | 1 | 1 | - | - |
Saturday (26 June 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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|
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|
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|
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| Chance of precipitation | 10% | 10% | 10% | 10% | 10% | <5% | 10% | 10% | 10% | 10% | 50% | 10% | 10% | 10% | 10% | 10% | 10% | 10% | 10% | 10% | 10% | 10% | 10% | 10% |
| Temperature in degrees Celsius |
13°
|
13°
|
13°
|
13°
|
13°
|
12°
|
12°
|
13°
|
13°
|
14°
|
14°
|
15°
|
16°
|
17°
|
18°
|
18°
|
19°
|
19°
|
18°
|
17°
|
16°
|
16°
|
15°
|
14°
|
| Feels like temperature in degrees Celsius | 12° | 11° | 11° | 11° | 11° | 11° | 11° | 11° | 12° | 12° | 13° | 13° | 14° | 15° | 16° | 17° | 17° | 17° | 17° | 16° | 16° | 15° | 15° | 14° |
| Wind direction and speed in miles per hour |
N
7
|
N
7
|
N
7
|
NNE
7
|
NE
7
|
NE
7
|
NE
7
|
ENE
8
|
ENE
9
|
E
10
|
E
11
|
E
10
|
E
11
|
ESE
10
|
ESE
10
|
ESE
10
|
ESE
8
|
SE
8
|
SE
9
|
SE
9
|
SSE
7
|
E
6
|
E
5
|
ENE
5
|
| Wind gust in miles per hour | 13 | 13 | 14 | 13 | 14 | 14 | 15 | 15 | 15 | 17 | 18 | 17 | 17 | 16 | 15 | 15 | 14 | 12 | 14 | 13 | 12 | 10 | 8 | 7 |
| Visibility | G | G | G | G | VG | G | G | G | G | G | G | G | VG | G | G | VG | VG | VG | VG | VG | VG | VG | VG | VG |
| Humidity | 84% | 86% | 86% | 86% | 87% | 88% | 88% | 87% | 84% | 80% | 76% | 73% | 66% | 63% | 58% | 57% | 55% | 54% | 58% | 64% | 69% | 73% | 77% | 81% |
| UV | - | - | - | - | - | - | 1 | 1 | 2 | 3 | 4 | 4 | 5 | 6 | 5 | 5 | 4 | 3 | 2 | 1 | 1 | 1 | - | - |
Sunday (27 June 2021)
| Time | 00:00 | 01:00 | 04:00 | 07:00 | 10:00 | 13:00 | 16:00 | 19:00 | 22:00 |
|---|---|---|---|---|---|---|---|---|---|
| Weather symbol |
|
|
|
|
|
|
|
|
|
| Chance of precipitation | 10% | 10% | 10% | 60% | 10% | 10% | 20% | 60% | 40% |
| Temperature in degrees Celsius |
14°
|
14°
|
14°
|
15°
|
16°
|
18°
|
20°
|
18°
|
17°
|
| Feels like temperature in degrees Celsius | 14° | 13° | 13° | 12° | 13° | 15° | 18° | 17° | 16° |
| Wind direction and speed in miles per hour |
NNE
5
|
NNE
6
|
NE
9
|
NE
13
|
NE
15
|
ENE
15
|
NE
14
|
NE
11
|
ENE
9
|
| Wind gust in miles per hour | 8 | 11 | 20 | 25 | 27 | 27 | 25 | 20 | 17 |
| Visibility | VG | VG | G | G | G | G | G | M | M |
| Humidity | 82% | 83% | 84% | 88% | 79% | 72% | 72% | 82% | 87% |
| UV | - | - | - | 1 | 4 | 6 | 3 | 1 | - |
Monday (28 June 2021)
| Time | 01:00 | 04:00 | 07:00 | 10:00 | 13:00 | 16:00 | 19:00 | 22:00 |
|---|---|---|---|---|---|---|---|---|
| Weather symbol |
|
|
|
|
|
|
|
|
| Chance of precipitation | 50% | 40% | 10% | 20% | 20% | 40% | 40% | 40% |
| Temperature in degrees Celsius |
16°
|
15°
|
15°
|
16°
|
18°
|
19°
|
17°
|
16°
|
| Feels like temperature in degrees Celsius | 14° | 13° | 13° | 14° | 16° | 18° | 17° | 16° |
| Wind direction and speed in miles per hour |
NE
11
|
ENE
11
|
NE
9
|
NE
11
|
NE
11
|
NE
10
|
NE
8
|
NNE
6
|
| Wind gust in miles per hour | 20 | 20 | 18 | 22 | 22 | 19 | 13 | 11 |
| Visibility | M | G | G | VG | VG | M | M | G |
| Humidity | 89% | 89% | 87% | 79% | 75% | 75% | 82% | 88% |
| UV | - | - | 1 | 3 | 4 | 3 | 1 | - |
Tuesday (29 June 2021)
| Time | 01:00 | 04:00 | 07:00 | 10:00 | 13:00 | 16:00 | 19:00 | 22:00 |
|---|---|---|---|---|---|---|---|---|
| Weather symbol |
|
|
|
|
|
|
|
|
| Chance of precipitation | 40% | 50% | 20% | 20% | 30% | 20% | 10% | 10% |
| Temperature in degrees Celsius |
15°
|
14°
|
14°
|
16°
|
18°
|
19°
|
18°
|
16°
|
| Feels like temperature in degrees Celsius | 14° | 13° | 13° | 15° | 17° | 18° | 17° | 15° |
| Wind direction and speed in miles per hour |
NNE
6
|
NNE
6
|
NNE
6
|
NNE
9
|
NNE
9
|
N
10
|
N
9
|
N
6
|
| Wind gust in miles per hour | 11 | 10 | 10 | 17 | 16 | 18 | 15 | 11 |
| Visibility | M | G | M | G | G | G | VG | VG |
| Humidity | 90% | 89% | 87% | 79% | 74% | 72% | 74% | 83% |
| UV | - | - | 1 | 3 | 5 | 3 | 1 | - |
Wednesday (30 June 2021)
| Time | 01:00 | 04:00 | 07:00 | 10:00 | 13:00 | 16:00 | 19:00 | 22:00 |
|---|---|---|---|---|---|---|---|---|
| Weather symbol |
|
|
|
|
|
|
|
|
| Chance of precipitation | 10% | 30% | 10% | <5% | 10% | 10% | 10% | 10% |
| Temperature in degrees Celsius |
15°
|
14°
|
15°
|
17°
|
20°
|
20°
|
19°
|
16°
|
| Feels like temperature in degrees Celsius | 14° | 14° | 14° | 16° | 19° | 19° | 18° | 16° |
| Wind direction and speed in miles per hour |
N
5
|
NW
5
|
NE
5
|
N
7
|
NW
8
|
W
9
|
NNE
8
|
N
6
|
| Wind gust in miles per hour | 9 | 9 | 10 | 15 | 18 | 17 | 15 | 10 |
| Visibility | VG | G | G | VG | VG | VG | VG | VG |
| Humidity | 86% | 90% | 86% | 74% | 65% | 68% | 72% | 84% |
| UV | - | - | 1 | 4 | 6 | 4 | 1 | - |
Thursday (1 July 2021)
| Time | 01:00 | 04:00 | 07:00 | 10:00 | 13:00 | 16:00 | 19:00 | 22:00 |
|---|---|---|---|---|---|---|---|---|
| Weather symbol |
|
|
|
|
|
|
|
|
| Chance of precipitation | <5% | <5% | 10% | 10% | 10% | 10% | 10% | 10% |
| Temperature in degrees Celsius |
15°
|
14°
|
15°
|
18°
|
19°
|
20°
|
19°
|
16°
|
| Feels like temperature in degrees Celsius | 14° | 13° | 14° | 17° | 19° | 19° | 18° | 16° |
| Wind direction and speed in miles per hour |
NNE
6
|
NNE
6
|
NNE
5
|
NNE
7
|
ENE
8
|
W
9
|
WNW
8
|
NNW
6
|
| Wind gust in miles per hour | 11 | 11 | 11 | 14 | 17 | 17 | 15 | 12 |
| Visibility | VG | G | G | VG | VG | G | G | VG |
| Humidity | 85% | 87% | 84% | 75% | 69% | 70% | 75% | 86% |
| UV | - | - | 1 | 4 | 6 | 4 | 2 | - |
WARNING
Flood warnings
Flood alerts in force
for Wales.
Wales weather forecast
Headline:
A wet Friday with a risk of thunder.
Today:
A wet day with rain becoming more widespread throughout the day. This rain will turn heavy at times for some and potentially turn thundery too. Feeling rather cool. Maximum temperature 18 °C.
Tonight:
Rain will gradually ease overnight to become light and patchy. Cloud will begin to break up alongside showers beginning to develop by dawn. Minimum temperature 8 °C.
Saturday:
Saturday will be a day of sunshine and showers before becoming largely dry with clear spells through the evening. Feeling warmer than Friday. Maximum temperature 22 °C.
Outlook for Sunday to Tuesday:
Becoming generally settled from Sunday to Tuesday, staying largely dry throughout with light winds, plenty of sunshine, and feeling warm. Risk of rain pushing into the south at times.
Updated:
UK long range weather forecast
Unsettled in the south of the UK on Tuesday with persistent rain likely and thundery showers possible, accompanied by stronger winds. Elsewhere, drier with long spells of sunshine and lighter winds. Temperatures will be warm for most, though locally suppressed under the unsettled weather. Confidence is then lower, although on balance a lot of fine and dry weather is most likely throughout. However, there are signals for some brief unsettled periods with southern and eastern areas seeing showers, possibly heavy and thundery, and more prolonged rain in the northwest. Temperatures are likely be above normal, with the potential for some very warm and humid days in the south. Winds will likely be light to moderate throughout, with a westerly flow across northern areas, and an easterly flow across the south.
Updated:
Although confidence remains low, in general settled conditions are likely, with a few brief unsettled spells possible. Some northwestern areas will likely see brief spells rain and cloudy conditions at times, as well as a continued risk for periods of heavy rain or thunderstorms especially across the south. Above-average temperatures continue to be well signalled, with the chance of some very warm or hot days to come.
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