St-Athan (Vale of Glamorgan) weather
Find a forecast
Forecast days
-
Maximum daytime temperature: 18° Celsius; Minimum nighttime temperature: 12° Celsius;
Maximum daytime temperature: 18 degrees Celsius; Minimum nighttime temperature: 12 degrees Celsius; -
Maximum daytime temperature: 18° Celsius; Minimum nighttime temperature: 14° Celsius;
Maximum daytime temperature: 18 degrees Celsius; Minimum nighttime temperature: 14 degrees Celsius; -
Maximum daytime temperature: 19° Celsius; Minimum nighttime temperature: 9° Celsius;
Maximum daytime temperature: 19 degrees Celsius; Minimum nighttime temperature: 9 degrees Celsius;
-
Maximum daytime temperature: 14° Celsius; Minimum nighttime temperature: 6° Celsius;
Maximum daytime temperature: 14 degrees Celsius; Minimum nighttime temperature: 6 degrees Celsius;
-
Maximum daytime temperature: 13° Celsius; Minimum nighttime temperature: 8° Celsius;
Maximum daytime temperature: 13 degrees Celsius; Minimum nighttime temperature: 8 degrees Celsius;
-
Maximum daytime temperature: 13° Celsius; Minimum nighttime temperature: 9° Celsius;
Maximum daytime temperature: 13 degrees Celsius; Minimum nighttime temperature: 9 degrees Celsius;
-
Maximum daytime temperature: 14° Celsius; Minimum nighttime temperature: 10° Celsius;
Maximum daytime temperature: 14 degrees Celsius; Minimum nighttime temperature: 10 degrees Celsius;
Heavy rain changing to sunny by late morning.
Sunrise:
Sunset:
M UV
L Pollution
No pollen data.
7 day forecast for St-Athan
Today (13 October 2026)
| Time |
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%
|
30%
|
≥95%
|
≥95%
|
30%
|
<5%
|
10%
|
10%
|
10%
|
10%
|
10%
|
10%
|
10%
|
10%
|
10%
|
10%
|
10%
|
10%
|
10%
|
10%
|
| Temperature |
17°
|
17°
|
17°
|
17°
|
16°
|
15°
|
16°
|
17°
|
17°
|
17°
|
17°
|
17°
|
17°
|
16°
|
16°
|
15°
|
15°
|
15°
|
14°
|
13°
|
| Feels like temperature (°C) |
15°
|
15°
|
15°
|
14°
|
12°
|
12°
|
12°
|
13°
|
12°
|
12°
|
12°
|
12°
|
13°
|
13°
|
12°
|
12°
|
12°
|
12°
|
12°
|
12°
|
| Wind direction and speed |
SSW
13
|
SSW
15
|
SW
16
|
WSW
19
|
W
19
|
W
19
|
W
20
|
W
21
|
W
22
|
W
22
|
W
22
|
W
22
|
W
19
|
W
18
|
W
16
|
W
14
|
W
13
|
W
11
|
W
10
|
W
9
|
| Wind gust (mph) |
28
|
32
|
33
|
36
|
31
|
31
|
34
|
35
|
36
|
36
|
35
|
33
|
31
|
27
|
23
|
23
|
22
|
20
|
19
|
17
|
| Visibility |
G
|
G
|
M
|
M
|
G
|
G
|
G
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
| Humidity |
87%
|
86%
|
90%
|
95%
|
86%
|
81%
|
76%
|
70%
|
65%
|
64%
|
64%
|
65%
|
65%
|
66%
|
68%
|
71%
|
72%
|
75%
|
76%
|
79%
|
| UV | - | - | - | 1 | 1 | 1 | 1 | 2 | 3 | 3 | 2 | 2 | 1 | 1 | 1 | - | - | - | - | - |
Wednesday (14 October 2026)
| 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 |
10%
|
20%
|
20%
|
10%
|
10%
|
10%
|
<5%
|
<5%
|
<5%
|
<5%
|
10%
|
<5%
|
<5%
|
<5%
|
10%
|
10%
|
10%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
| Temperature (°C) |
13°
|
13°
|
13°
|
13°
|
13°
|
13°
|
13°
|
13°
|
13°
|
14°
|
15°
|
16°
|
17°
|
17°
|
18°
|
17°
|
18°
|
17°
|
16°
|
15°
|
15°
|
14°
|
14°
|
14°
|
| Feels like temperature (°C) |
12°
|
11°
|
12°
|
12°
|
12°
|
12°
|
12°
|
11°
|
11°
|
12°
|
13°
|
14°
|
15°
|
15°
|
16°
|
15°
|
15°
|
15°
|
14°
|
13°
|
13°
|
12°
|
12°
|
12°
|
| Wind direction and speed (mph) |
W
7
|
W
7
|
W
6
|
WSW
7
|
SW
7
|
SSW
8
|
SW
8
|
SSW
9
|
SSW
9
|
SSW
9
|
SSW
10
|
SSW
10
|
SSW
11
|
SSW
11
|
SW
11
|
SW
13
|
SSW
13
|
SSW
11
|
SSW
11
|
SSW
11
|
SSW
10
|
SSW
10
|
S
10
|
S
10
|
| Wind gust (mph) |
16
|
14
|
14
|
15
|
16
|
17
|
17
|
18
|
19
|
19
|
21
|
24
|
24
|
24
|
24
|
24
|
23
|
22
|
22
|
22
|
21
|
21
|
21
|
21
|
| Visibility (description) |
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
G
|
G
|
G
|
G
|
VG
|
VG
|
VG
|
VG
|
VG
|
G
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
| Humidity |
80%
|
83%
|
84%
|
85%
|
85%
|
86%
|
87%
|
88%
|
88%
|
85%
|
82%
|
76%
|
75%
|
69%
|
66%
|
65%
|
67%
|
69%
|
73%
|
75%
|
79%
|
84%
|
85%
|
85%
|
| UV | - | - | - | - | - | - | - | 1 | 1 | 1 | 1 | 2 | 2 | 2 | 2 | 1 | 1 | 1 | 1 | - | - | - | - | - |
Thursday (15 October 2026)
| 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%
|
10%
|
10%
|
10%
|
20%
|
10%
|
10%
|
10%
|
10%
|
10%
|
10%
|
10%
|
<5%
|
<5%
|
10%
|
30%
|
50%
|
50%
|
60%
|
60%
|
60%
|
70%
|
60%
|
| Temperature (°C) |
14°
|
14°
|
14°
|
15°
|
15°
|
15°
|
16°
|
16°
|
15°
|
16°
|
17°
|
18°
|
18°
|
19°
|
19°
|
19°
|
18°
|
18°
|
17°
|
17°
|
16°
|
15°
|
15°
|
15°
|
| Feels like temperature (°C) |
12°
|
13°
|
13°
|
13°
|
14°
|
14°
|
14°
|
14°
|
14°
|
15°
|
15°
|
16°
|
17°
|
17°
|
17°
|
18°
|
17°
|
17°
|
16°
|
15°
|
15°
|
14°
|
13°
|
13°
|
| Wind direction and speed (mph) |
S
10
|
S
10
|
S
10
|
S
10
|
SSW
10
|
SSW
10
|
SSW
10
|
SSW
10
|
SSW
10
|
S
10
|
SSW
9
|
SSW
10
|
SW
10
|
SW
10
|
SW
10
|
WSW
9
|
SW
8
|
WSW
8
|
SW
9
|
SW
10
|
SW
10
|
SW
10
|
WSW
10
|
WSW
9
|
| Wind gust (mph) |
21
|
21
|
20
|
20
|
21
|
21
|
21
|
22
|
23
|
23
|
23
|
24
|
23
|
24
|
24
|
24
|
24
|
22
|
22
|
23
|
24
|
23
|
23
|
23
|
| Visibility (description) |
VG
|
VG
|
VG
|
VG
|
VG
|
G
|
G
|
G
|
G
|
G
|
G
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
G
|
G
|
G
|
G
|
M
|
M
|
| Humidity |
85%
|
85%
|
86%
|
86%
|
87%
|
88%
|
90%
|
90%
|
90%
|
89%
|
87%
|
82%
|
79%
|
75%
|
76%
|
76%
|
77%
|
81%
|
85%
|
89%
|
90%
|
89%
|
88%
|
90%
|
| UV | - | - | - | - | - | - | - | 1 | 1 | 1 | 1 | 2 | 2 | 2 | 2 | 1 | 1 | 1 | 1 | - | - | - | - | - |
Friday (16 October 2026)
| 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 |
60%
|
50%
|
50%
|
40%
|
20%
|
10%
|
<5%
|
<5%
|
10%
|
10%
|
10%
|
10%
|
<5%
|
<5%
|
<5%
|
10%
|
10%
|
10%
|
10%
|
10%
|
10%
|
10%
|
<5%
|
<5%
|
| Temperature (°C) |
15°
|
13°
|
12°
|
11°
|
11°
|
10°
|
10°
|
9°
|
9°
|
10°
|
12°
|
13°
|
13°
|
14°
|
14°
|
14°
|
13°
|
13°
|
11°
|
10°
|
9°
|
9°
|
8°
|
8°
|
| Feels like temperature (°C) |
13°
|
11°
|
10°
|
9°
|
9°
|
8°
|
8°
|
7°
|
7°
|
8°
|
9°
|
10°
|
11°
|
11°
|
11°
|
11°
|
11°
|
11°
|
9°
|
8°
|
7°
|
7°
|
6°
|
6°
|
| Wind direction and speed (mph) |
W
9
|
WNW
9
|
WNW
10
|
WNW
10
|
NW
9
|
NW
10
|
NW
10
|
NW
9
|
NW
10
|
NW
10
|
NW
11
|
NW
13
|
NW
13
|
NW
11
|
NW
13
|
NW
13
|
NW
11
|
NW
10
|
NW
9
|
NW
8
|
NW
7
|
NW
7
|
NW
7
|
NW
7
|
| Wind gust (mph) |
24
|
25
|
25
|
24
|
24
|
23
|
23
|
23
|
23
|
24
|
26
|
26
|
26
|
26
|
25
|
25
|
25
|
23
|
21
|
20
|
19
|
19
|
18
|
17
|
| Visibility (description) |
M
|
G
|
G
|
G
|
G
|
G
|
G
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
| Humidity |
91%
|
90%
|
90%
|
87%
|
86%
|
85%
|
85%
|
85%
|
83%
|
78%
|
74%
|
65%
|
59%
|
56%
|
54%
|
53%
|
54%
|
57%
|
66%
|
73%
|
76%
|
77%
|
80%
|
82%
|
| UV | - | - | - | - | - | - | - | 1 | 1 | 1 | 1 | 2 | 2 | 2 | 2 | 1 | 1 | 1 | 1 | - | - | - | - | - |
Saturday (17 October 2026)
| 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) |
7°
|
7°
|
7°
|
6°
|
7°
|
6°
|
6°
|
6°
|
6°
|
8°
|
10°
|
11°
|
12°
|
13°
|
13°
|
13°
|
13°
|
13°
|
11°
|
11°
|
10°
|
10°
|
9°
|
9°
|
| Feels like temperature (°C) |
5°
|
5°
|
5°
|
4°
|
4°
|
4°
|
4°
|
4°
|
4°
|
6°
|
8°
|
9°
|
10°
|
11°
|
11°
|
12°
|
11°
|
11°
|
9°
|
9°
|
8°
|
7°
|
7°
|
7°
|
| Wind direction and speed (mph) |
NW
7
|
NW
7
|
NW
7
|
NW
7
|
NNW
7
|
NNW
7
|
NNW
7
|
NNW
7
|
NNW
7
|
N
7
|
N
7
|
NNE
8
|
NE
8
|
NE
9
|
NE
9
|
NE
9
|
NE
9
|
NE
8
|
NNE
8
|
NNE
8
|
NNE
9
|
NE
10
|
NE
10
|
NE
10
|
| Wind gust (mph) |
16
|
16
|
16
|
15
|
15
|
15
|
15
|
15
|
15
|
16
|
17
|
18
|
18
|
19
|
18
|
18
|
18
|
18
|
18
|
17
|
18
|
18
|
18
|
18
|
| Visibility (description) |
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
| Humidity |
83%
|
84%
|
84%
|
85%
|
85%
|
84%
|
85%
|
85%
|
85%
|
78%
|
71%
|
64%
|
57%
|
54%
|
51%
|
49%
|
51%
|
55%
|
60%
|
64%
|
66%
|
66%
|
68%
|
69%
|
| UV | - | - | - | - | - | - | - | 1 | 1 | 1 | 1 | 2 | 2 | 2 | 2 | 1 | 1 | 1 | 1 | - | - | - | - | - |
Sunday (18 October 2026)
| 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) |
9°
|
9°
|
8°
|
8°
|
10°
|
13°
|
13°
|
11°
|
11°
|
| Feels like temperature (°C) |
6°
|
6°
|
6°
|
5°
|
8°
|
10°
|
11°
|
9°
|
8°
|
| Wind direction and speed (mph) |
NE
10
|
NE
10
|
NE
10
|
NE
9
|
NE
10
|
NE
11
|
NNE
11
|
NNE
11
|
NNE
11
|
| Wind gust (mph) |
19
|
17
|
16
|
18
|
21
|
21
|
20
|
20
|
20
|
| Visibility (description) |
VG
|
VG
|
VG
|
G
|
VG
|
VG
|
VG
|
VG
|
VG
|
| Humidity |
69%
|
70%
|
74%
|
76%
|
66%
|
58%
|
56%
|
68%
|
74%
|
| UV | - | - | - | 1 | 1 | 2 | 1 | - | - |
Monday (19 October 2026)
| Time |
01:00
|
04:00
|
07:00
|
10:00
|
13:00
|
16:00
|
19:00
|
22:00
|
|---|---|---|---|---|---|---|---|---|
| Weather symbols | |
|
|
|
|
|
|
|
| Chance of precipitation |
<5%
|
10%
|
10%
|
10%
|
10%
|
10%
|
10%
|
10%
|
| Temperature (°C) |
10°
|
10°
|
9°
|
11°
|
13°
|
14°
|
12°
|
12°
|
| Feels like temperature (°C) |
7°
|
7°
|
6°
|
9°
|
11°
|
12°
|
10°
|
10°
|
| Wind direction and speed (mph) |
NE
13
|
NNE
13
|
NNE
13
|
NE
13
|
NE
11
|
ENE
11
|
NE
11
|
ENE
11
|
| Wind gust (mph) |
19
|
21
|
22
|
24
|
23
|
22
|
21
|
22
|
| Visibility (description) |
G
|
G
|
G
|
G
|
G
|
G
|
G
|
G
|
| Humidity |
78%
|
82%
|
83%
|
77%
|
69%
|
68%
|
77%
|
81%
|
| UV | - | - | 1 | 1 | 2 | 1 | - | - |
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Wales weather forecast
Headline:
A mild week with outbreaks of rain and strong winds.
Today:
A cloudy start in the east, but outbreaks of rain will quickly sweep through around dawn, clearing to a sunny, breezy day. Feeling less humid than Monday but still warm in the sun. Widespread strong winds, especially for exposed areas. Maximum temperature 18 °C.
Tonight:
Winds easing through the evening for a calm night with long clear spells. Feeling chilly with temperatures falling to single-digits, and a risk of grass frost for inland rural spots. Minimum temperature 7 °C.
Wednesday:
Tomorrow, winds will strengthen again for a breezy day. There is even a risk of coastal gales in the northwest later. Sunny spells to start, becoming cloudy. Another mild day. Maximum temperature 19 °C.
Outlook for Thursday to Saturday:
Increasingly cloudy on Thursday with outbreaks of heavy rain and strong winds. Dry with sunny spells on Friday but remaining breezy. Cooler on Saturday with light winds and sunny spells.
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