Clydach (Swansea) weather

Forecast days

Cloudy changing to heavy rain by early evening.
Sunrise iconSunrise:
Sunset iconSunset:
M UV
L Pollution
No pollen data.

7 day forecast for Clydach

Today (16 September 2025)
Time
17:00
18:00
19:00
20:00
21:00
22:00
23:00
Weather symbols Cloudy Light rain Heavy rain Heavy rain Heavy rain Heavy rain Heavy rain
Chance of precipitation
40%
60%
80%
90%
90%
≥95%
≥95%
Temperature
16°
15°
14°
14°
14°
14°
14°
Feels like temperature (°C)
14°
14°
14°
14°
14°
14°
13°
Wind direction and speed
WSW
9
W
7
W
6
WSW
4
S
3
SSW
3
SSW
5
Wind gust (mph)
22
18
13
7
6
9
16
Visibility
VG
VG
VG
VG
VG
G
P
Humidity
71%
76%
84%
91%
93%
95%
96%
UV 1 1 1 - - - -
Wednesday (17 September 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 Heavy rain Heavy rain Heavy rain Heavy rain Heavy rain Heavy rain Heavy rain Heavy rain Heavy rain Heavy rain Heavy rain Heavy rain Heavy rain Heavy rain Heavy rain Heavy rain Heavy rain Heavy rain Heavy rain Heavy rain Heavy rain Heavy rain Light rain Light rain
Chance of precipitation
≥95%
≥95%
≥95%
≥95%
≥95%
≥95%
≥95%
90%
90%
≥95%
≥95%
≥95%
≥95%
≥95%
≥95%
90%
90%
90%
90%
90%
90%
90%
90%
90%
Temperature (°C)
14°
14°
14°
14°
15°
15°
15°
16°
16°
16°
17°
17°
17°
17°
17°
17°
17°
17°
17°
17°
17°
17°
17°
17°
Feels like temperature (°C)
13°
12°
12°
13°
13°
13°
13°
14°
14°
14°
14°
15°
15°
15°
15°
16°
16°
16°
16°
16°
16°
16°
16°
16°
Wind direction and speed (mph)
S
7
S
10
S
11
S
12
S
13
S
13
SSW
14
SW
15
SW
15
SW
15
SW
15
SW
15
SW
15
SW
15
SW
14
SW
14
SW
13
SW
13
SW
12
SW
12
SW
11
SW
11
SW
11
SW
11
Wind gust (mph)
25
27
28
30
34
37
39
39
39
38
37
36
36
35
33
33
33
30
30
29
28
28
29
29
Visibility (description)
P
M
P
P
P
P
P
M
M
M
P
M
M
M
M
P
P
M
M
M
M
M
M
M
Humidity
96%
96%
96%
97%
97%
96%
96%
97%
97%
97%
98%
98%
98%
98%
98%
98%
98%
98%
98%
98%
99%
99%
99%
99%
UV - - - - - - 1 1 1 1 1 1 1 2 1 1 1 1 1 1 - - - -
Thursday (18 September 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 Heavy rain Heavy rain Heavy rain Light rain Light rain Light rain Light rain Light rain Overcast Overcast Overcast Overcast Overcast Overcast Overcast Overcast Overcast Overcast Overcast Overcast Overcast Overcast Overcast Overcast
Chance of precipitation
90%
90%
90%
90%
80%
80%
80%
70%
50%
40%
40%
40%
30%
30%
30%
30%
40%
40%
30%
30%
30%
30%
20%
10%
Temperature (°C)
17°
17°
17°
17°
17°
17°
17°
17°
17°
17°
18°
18°
19°
19°
19°
19°
19°
18°
18°
18°
18°
18°
18°
17°
Feels like temperature (°C)
16°
16°
16°
16°
16°
16°
16°
15°
15°
16°
16°
16°
16°
16°
17°
17°
17°
17°
17°
17°
17°
17°
16°
16°
Wind direction and speed (mph)
SW
12
SW
12
SW
12
SW
12
SW
13
SW
13
SW
13
SW
13
SW
13
SW
13
SW
13
SW
14
SW
14
SW
15
SW
15
SW
15
SW
14
SW
13
SW
12
SW
12
SSW
11
SSW
10
SSW
10
SSW
10
Wind gust (mph)
30
31
32
32
32
33
34
34
33
33
34
34
35
34
34
34
32
31
30
27
27
26
26
26
Visibility (description)
M
M
M
M
M
M
M
G
VG
VG
VG
VG
VG
VG
VG
VG
VG
VG
VG
VG
VG
VG
VG
VG
Humidity
98%
99%
99%
98%
98%
98%
97%
96%
95%
94%
92%
90%
88%
88%
88%
89%
90%
92%
92%
91%
90%
91%
90%
90%
UV - - - - - - 1 1 1 1 2 2 2 2 2 1 1 1 1 1 - - - -
Friday (19 September 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 Overcast Overcast Overcast Overcast Overcast Overcast Overcast Overcast Overcast Overcast Overcast Light rain Light rain Light rain Light rain Light rain Light rain Overcast Overcast Overcast Light rain Cloudy Cloudy Cloudy
Chance of precipitation
10%
10%
20%
30%
20%
20%
30%
40%
40%
40%
50%
50%
50%
60%
70%
60%
60%
50%
50%
40%
50%
50%
40%
40%
Temperature (°C)
17°
17°
17°
17°
17°
17°
16°
16°
16°
16°
17°
17°
18°
18°
18°
18°
18°
17°
17°
17°
16°
16°
15°
15°
Feels like temperature (°C)
16°
16°
16°
16°
16°
16°
16°
15°
15°
15°
16°
16°
17°
17°
17°
17°
17°
17°
16°
16°
16°
16°
15°
15°
Wind direction and speed (mph)
SSW
10
S
9
SSW
9
S
9
S
9
S
9
S
8
S
8
S
8
SSW
9
SSW
9
SSW
9
SSW
9
SSW
9
SSW
9
SW
8
SW
8
SW
7
SW
7
SW
6
SW
5
SW
5
WSW
4
WSW
4
Wind gust (mph)
26
26
24
24
23
25
23
23
23
23
23
23
23
23
21
15
16
16
15
13
10
9
8
8
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
89%
89%
88%
89%
90%
89%
89%
90%
91%
91%
91%
91%
87%
87%
88%
91%
91%
88%
89%
91%
91%
92%
93%
94%
UV - - - - - - 1 1 1 1 1 2 2 2 2 1 1 1 1 1 - - - -
Saturday (20 September 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 Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Light shower day Light shower day Light shower day Light shower day Light shower night Light shower night Light shower night Cloudy Cloudy
Chance of precipitation
40%
30%
30%
30%
30%
30%
30%
30%
30%
40%
40%
40%
50%
50%
50%
50%
50%
50%
60%
50%
50%
50%
50%
50%
Temperature (°C)
15°
14°
14°
14°
14°
13°
13°
13°
13°
14°
14°
15°
16°
16°
16°
16°
16°
15°
15°
14°
13°
13°
12°
12°
Feels like temperature (°C)
15°
15°
14°
14°
14°
13°
13°
13°
13°
13°
14°
14°
14°
14°
14°
14°
14°
14°
13°
13°
12°
12°
11°
11°
Wind direction and speed (mph)
W
4
W
3
WNW
3
WNW
3
NW
4
WNW
4
NNW
4
NNW
4
NNW
4
NW
5
NW
6
NW
7
NNW
8
NNW
8
WNW
9
WNW
9
NW
9
NW
8
NW
8
NNW
7
NW
7
NW
6
NNW
6
NNW
6
Wind gust (mph)
7
6
6
7
7
7
7
7
9
10
12
12
14
17
17
19
17
17
17
16
14
13
13
13
Visibility (description)
VG
VG
VG
VG
VG
VG
VG
VG
VG
VG
VG
VG
E
E
E
E
E
VG
VG
VG
VG
VG
VG
VG
Humidity
94%
93%
93%
93%
93%
92%
91%
92%
91%
88%
85%
79%
76%
73%
72%
72%
73%
75%
80%
83%
87%
88%
89%
88%
UV - - - - - - 1 1 1 1 2 2 3 2 3 2 2 1 1 1 - - - -
Sunday (21 September 2025)
Time
00:00
01:00
04:00
07:00
10:00
13:00
16:00
19:00
22:00
Weather symbols Partly cloudy night Partly cloudy night Partly cloudy night Sunny intervals Sunny intervals Sunny intervals Sunny intervals Partly cloudy night Partly cloudy night
Chance of precipitation
50%
40%
40%
40%
30%
30%
20%
10%
10%
Temperature (°C)
12°
12°
11°
10°
12°
14°
14°
12°
10°
Feels like temperature (°C)
11°
10°
10°
12°
12°
10°
Wind direction and speed (mph)
NNW
6
N
7
N
7
N
8
N
11
N
12
N
11
NNE
9
NNE
7
Wind gust (mph)
13
14
16
23
27
27
24
18
14
Visibility (description)
VG
VG
VG
VG
VG
VG
VG
VG
VG
Humidity
89%
89%
89%
86%
75%
62%
59%
63%
71%
UV - - - 1 2 4 2 1 -
Monday (22 September 2025)
Time
01:00
04:00
07:00
10:00
13:00
16:00
19:00
22:00
Weather symbols Partly cloudy night Partly cloudy night Sunny intervals Cloudy Cloudy Cloudy Cloudy Partly cloudy night
Chance of precipitation
10%
10%
<5%
<5%
<5%
<5%
10%
10%
Temperature (°C)
12°
14°
14°
13°
11°
Feels like temperature (°C)
10°
12°
12°
11°
Wind direction and speed (mph)
NNE
7
NNE
7
NNE
7
NE
9
NE
11
NE
10
NE
8
NE
7
Wind gust (mph)
12
10
14
19
19
18
12
10
Visibility (description)
VG
VG
VG
VG
VG
VG
VG
VG
Humidity
75%
78%
77%
64%
55%
54%
63%
73%
UV - - 1 2 4 1 1 -

UK video forecast

Clydach weather map

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WARNING
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Flood alerts in force for Wales
Flood alerts in force for Wales

Wales weather forecast

Headline:

Remaining changeable with rain tonight.

This Evening and Tonight:

Cloudy this evening then turning increasingly wet and windy overnight with a band of heavy and persistent rain pushing eastwards. Rain most persistent over the mountains, with flooding possible. Mild overnight. Minimum temperature 11 °C.

Wednesday:

Heavy, persistent rain clearing eastwards through the morning, though remaining cloudy with outbreaks of patchy rain and drizzle throughout the day, turning heavy at times over the hills. Breezy. Maximum temperature 18 °C.

Outlook for Thursday to Saturday:

Remaining changeable with showers or longer spells of rain at times, though brighter interludes are possible. Often breezy. A little milder and more humid by the end of the week.

Updated:

UK long range weather forecast

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