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Wind and rain marking a change in the UK weather
Warnings have been issued as the weather across the UK becomes increasingly mild but wet and windy.
Read moreSt-Athan (Vale of Glamorgan) weather
Find a forecast
Forecast days
-
Maximum daytime temperature: 22° Celsius; Minimum nighttime temperature: 13° Celsius;
Maximum daytime temperature: 22° Celsius; Minimum nighttime temperature: 13° Celsius; -
Maximum daytime temperature: 27° Celsius; Minimum nighttime temperature: 16° Celsius;
Maximum daytime temperature: 27° Celsius; Minimum nighttime temperature: 16° Celsius; -
Maximum daytime temperature: 27° Celsius; Minimum nighttime temperature: 13° Celsius;
Maximum daytime temperature: 27° Celsius; Minimum nighttime temperature: 13° Celsius;
-
Maximum daytime temperature: 26° Celsius; Minimum nighttime temperature: 14° Celsius;
Maximum daytime temperature: 26° Celsius; Minimum nighttime temperature: 14° Celsius;
-
Maximum daytime temperature: 26° Celsius; Minimum nighttime temperature: 15° Celsius;
Maximum daytime temperature: 26° Celsius; Minimum nighttime temperature: 15° Celsius;
-
Maximum daytime temperature: 25° Celsius; Minimum nighttime temperature: 14° Celsius;
Maximum daytime temperature: 25° Celsius; Minimum nighttime temperature: 14° Celsius;
-
Maximum daytime temperature: 24° Celsius; Minimum nighttime temperature: 15° Celsius;
Maximum daytime temperature: 24° Celsius; Minimum nighttime temperature: 15° Celsius;
7 day forecast for St-Athan
Today (14 August 2025)
| Time |
13:00
|
14:00
|
15:00
|
16:00
|
17:00
|
18:00
|
19:00
|
20:00
|
21:00
|
22:00
|
23:00
|
|---|---|---|---|---|---|---|---|---|---|---|---|
| Weather symbols |  |
|
|
|
 |
|
|
|
 |
|
|
| Chance of precipitation |
20%
|
10%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
| Temperature |
20°
|
20°
|
21°
|
21°
|
20°
|
20°
|
19°
|
19°
|
18°
|
17°
|
17°
|
| Feels like temperature (°C) |
18°
|
18°
|
18°
|
18°
|
18°
|
18°
|
17°
|
17°
|
17°
|
17°
|
16°
|
| Wind direction and speed |
WSW
15
|
W
16
|
W
16
|
W
15
|
W
15
|
W
14
|
W
13
|
W
12
|
W
10
|
WNW
8
|
WNW
7
|
| Wind gust (mph) |
26
|
27
|
27
|
25
|
25
|
23
|
21
|
18
|
17
|
15
|
14
|
| Visibility |
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
| Humidity |
82%
|
82%
|
79%
|
76%
|
75%
|
77%
|
81%
|
85%
|
86%
|
90%
|
92%
|
| UV | 6 | 6 | 5 | 4 | 2 | 1 | 1 | 1 | - | - | - |
Friday (15 August 2025)
| 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 symbols | |
 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Chance of precipitation |
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
| Temperature (°C) |
17°
|
16°
|
15°
|
15°
|
14°
|
14°
|
13°
|
15°
|
17°
|
19°
|
21°
|
23°
|
24°
|
25°
|
25°
|
26°
|
26°
|
26°
|
26°
|
25°
|
23°
|
20°
|
20°
|
20°
|
| Feels like temperature (°C) |
16°
|
16°
|
15°
|
15°
|
14°
|
14°
|
13°
|
15°
|
17°
|
19°
|
21°
|
22°
|
23°
|
24°
|
25°
|
26°
|
26°
|
26°
|
26°
|
25°
|
23°
|
20°
|
19°
|
18°
|
| Wind direction and speed (mph) |
WNW
6
|
WNW
5
|
NW
5
|
NW
4
|
NW
4
|
NNW
3
|
N
3
|
NNE
3
|
NE
4
|
ENE
5
|
E
6
|
ESE
7
|
ESE
7
|
SE
7
|
SE
6
|
SW
6
|
WSW
6
|
W
6
|
WNW
6
|
WNW
6
|
NW
6
|
NNW
6
|
N
6
|
NE
8
|
| Wind gust (mph) |
12
|
11
|
10
|
10
|
8
|
7
|
7
|
9
|
10
|
11
|
13
|
14
|
14
|
14
|
14
|
14
|
13
|
13
|
12
|
12
|
12
|
13
|
14
|
20
|
| Visibility (description) |
G
|
G
|
G
|
G
|
G
|
G
|
G
|
G
|
G
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
| Humidity |
93%
|
94%
|
96%
|
96%
|
96%
|
97%
|
97%
|
92%
|
84%
|
75%
|
68%
|
62%
|
57%
|
52%
|
46%
|
49%
|
49%
|
48%
|
52%
|
55%
|
65%
|
74%
|
75%
|
63%
|
| UV | - | - | - | - | - | - | 1 | 1 | 1 | 3 | 4 | 6 | 7 | 7 | 6 | 5 | 4 | 2 | 1 | 1 | 1 | - | - | - |
Saturday (16 August 2025)
| Time |
00:00
|
01:00
|
04:00
|
07:00
|
10:00
|
13:00
|
16:00
|
19:00
|
22:00
|
|---|---|---|---|---|---|---|---|---|---|
| Weather symbols | |
|
|
|
|
|
|
|
|
| Chance of precipitation |
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
| Temperature (°C) |
20°
|
19°
|
17°
|
16°
|
20°
|
24°
|
27°
|
25°
|
20°
|
| Feels like temperature (°C) |
18°
|
17°
|
15°
|
14°
|
17°
|
22°
|
24°
|
23°
|
18°
|
| Wind direction and speed (mph) |
NE
10
|
NE
11
|
ENE
12
|
ENE
12
|
E
15
|
E
13
|
E
12
|
ENE
11
|
E
10
|
| Wind gust (mph) |
21
|
23
|
23
|
24
|
24
|
23
|
19
|
18
|
22
|
| Visibility (description) |
VG
|
VG
|
G
|
G
|
G
|
VG
|
VG
|
VG
|
VG
|
| Humidity |
62%
|
65%
|
79%
|
85%
|
70%
|
51%
|
40%
|
40%
|
60%
|
| UV | - | - | - | 1 | 4 | 7 | 3 | 1 | - |
Sunday (17 August 2025)
| Time |
01:00
|
04:00
|
07:00
|
10:00
|
13:00
|
16:00
|
19:00
|
22:00
|
|---|---|---|---|---|---|---|---|---|
| Weather symbols | |
|
|
|
|
|
|
|
| Chance of precipitation |
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
| Temperature (°C) |
18°
|
15°
|
14°
|
18°
|
23°
|
25°
|
25°
|
19°
|
| Feels like temperature (°C) |
15°
|
13°
|
12°
|
15°
|
19°
|
23°
|
23°
|
18°
|
| Wind direction and speed (mph) |
E
11
|
E
10
|
ENE
12
|
E
16
|
E
13
|
E
10
|
E
8
|
SE
5
|
| Wind gust (mph) |
23
|
23
|
26
|
25
|
23
|
20
|
15
|
13
|
| Visibility (description) |
VG
|
VG
|
VG
|
VG
|
VG
|
E
|
VG
|
VG
|
| Humidity |
68%
|
76%
|
80%
|
64%
|
42%
|
40%
|
40%
|
71%
|
| UV | - | - | 1 | 4 | 7 | 3 | 1 | - |
Monday (18 August 2025)
| Time |
01:00
|
04:00
|
07:00
|
10:00
|
13:00
|
16:00
|
19:00
|
22:00
|
|---|---|---|---|---|---|---|---|---|
| Weather symbols | |
|
|
|
|
|
|
|
| Chance of precipitation |
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
| Temperature (°C) |
16°
|
16°
|
15°
|
19°
|
23°
|
25°
|
24°
|
20°
|
| Feels like temperature (°C) |
16°
|
14°
|
13°
|
16°
|
20°
|
24°
|
24°
|
20°
|
| Wind direction and speed (mph) |
ENE
6
|
ENE
9
|
ENE
11
|
E
13
|
E
11
|
E
9
|
ENE
7
|
ENE
5
|
| Wind gust (mph) |
17
|
19
|
21
|
21
|
20
|
16
|
12
|
10
|
| Visibility (description) |
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
| Humidity |
81%
|
76%
|
82%
|
67%
|
53%
|
44%
|
47%
|
65%
|
| UV | - | - | 1 | 4 | 7 | 3 | 1 | - |
Tuesday (19 August 2025)
| Time |
01:00
|
04:00
|
07:00
|
10:00
|
13:00
|
16:00
|
19:00
|
22:00
|
|---|---|---|---|---|---|---|---|---|
| Weather symbols | |
|
|
|
|
|
|
|
| Chance of precipitation |
<5%
|
<5%
|
10%
|
10%
|
10%
|
10%
|
10%
|
10%
|
| Temperature (°C) |
19°
|
17°
|
16°
|
18°
|
21°
|
23°
|
23°
|
20°
|
| Feels like temperature (°C) |
18°
|
16°
|
15°
|
16°
|
20°
|
23°
|
23°
|
19°
|
| Wind direction and speed (mph) |
ENE
7
|
ENE
8
|
ENE
10
|
ENE
12
|
E
10
|
E
7
|
ENE
7
|
NE
6
|
| Wind gust (mph) |
12
|
16
|
19
|
20
|
17
|
12
|
10
|
10
|
| Visibility (description) |
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
| Humidity |
70%
|
77%
|
83%
|
81%
|
66%
|
55%
|
57%
|
68%
|
| UV | - | - | 1 | 4 | 6 | 3 | 1 | - |
Wednesday (20 August 2025)
| Time |
01:00
|
04:00
|
07:00
|
10:00
|
13:00
|
16:00
|
19:00
|
22:00
|
|---|---|---|---|---|---|---|---|---|
| Weather symbols | |
|
|
|
|
|
|
|
| Chance of precipitation |
10%
|
10%
|
20%
|
30%
|
30%
|
30%
|
20%
|
20%
|
| Temperature (°C) |
18°
|
16°
|
16°
|
18°
|
20°
|
22°
|
22°
|
19°
|
| Feels like temperature (°C) |
17°
|
16°
|
15°
|
17°
|
19°
|
22°
|
21°
|
19°
|
| Wind direction and speed (mph) |
ENE
6
|
ENE
7
|
ENE
7
|
ENE
9
|
E
8
|
ESE
7
|
SE
7
|
ENE
6
|
| Wind gust (mph) |
9
|
8
|
10
|
12
|
11
|
10
|
7
|
7
|
| Visibility (description) |
VG
|
VG
|
G
|
VG
|
VG
|
VG
|
VG
|
VG
|
| Humidity |
78%
|
85%
|
90%
|
82%
|
70%
|
59%
|
66%
|
79%
|
| UV | - | - | 1 | 3 | 6 | 3 | 1 | - |
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St-Athan weather map
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Wales weather forecast
Headline:
Rather cloudy on Thursday, but sunshine prevailing towards the weekend.
Today:
Grey start for most with scattered showers, mostly light. Turning brighter and drier through the afternoon as cloud breaks and lifts. Still warm despite the cloud. Maximum temperature 24 °C.
Tonight:
Late sunny spells to end the day. Staying dry overnight but areas of low cloud pushing inland, providing misty conditions around some coasts and hills. Mild. Minimum temperature 12 °C.
Friday:
Any low cloud and patchy fog soon clearing, leaving a fine and dry day with lengthy periods of strong sunshine. Feeling hot with only a light breeze. Maximum temperature 28 °C.
Outlook for Saturday to Monday:
A largely settled period with lengthy sunny spells after early morning cloud clears. Warm in the sunshine, though also turning windier. Showers possible in the west on Sunday and Monday.
Updated:
UK long range weather forecast
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