To customise your experience, sign in or sign up:

Remember me

Search for a spot name or postcode..

Swansea Bay Wind and Wave Forecast

GFS 0.25° wind, atmospheric and GFSWave 0.25° forecast data for Swansea Bay.

Sunday 13 September (Today)

Wind Gust Dir Cloud Mid High Rain Temp Swell Period Dir Wave Period Dir
07:00
11.3kts
18.3kts
-1%
-1%
-1%
-1mm
16.9°C
1.4m
8.1sec
1.3m
8.2sec
10:00
10.2kts
17.2kts
100%
2%
70%
0.7mm
17.2°C
1.3m
9.5sec
1.3m
9.4sec
13:00
10.5kts
16.7kts
100%
1%
50%
1.4mm
18°C
1.2m
9.5sec
1.2m
9.4sec
16:00
10kts
14.9kts
100%
1%
37%
0.7mm
18°C
1.2m
9.4sec
1.2m
9.3sec
19:00
8.4kts
13.5kts
98%
14%
66%
0.9mm
17.5°C
1.1m
9.3sec
1.1m
9.2sec
22:00
9.1kts
15.5kts
93%
6%
100%
0.2mm
16.9°C
1m
9.5sec
1m
9.4sec

Sunrise: 06:46 / Sunset: 19:37 Twilight: 06:12 / 20:11

°C

more >>

Today's tide data

Time Height (m)
02:22:31 L +0.93
08:32:38 H +9.62
14:29:46 L +0.99
20:46:26 H +9.69

Tide chart for Mumbles

Bigsalty Tide Charts

Tide times vary with distance to report location; all times incorporate BST; for more tide information click here

Monday 14 September (Tomorrow)

Wind Gust Dir Cloud Mid High Rain Temp Swell Period Dir Wave Period Dir
01:00
9.8kts
15.4kts
88%
6%
100%
0.2mm
16.6°C
1m
9.4sec
1m
9.4sec
04:00
7.2kts
13.2kts
86%
1%
83%
0mm
16.2°C
0.9m
9.2sec
-1m
-1sec
07:00
6.4kts
12.4kts
89%
1%
45%
0.4mm
16.8°C
0.9m
9sec
0.9m
9sec
10:00
10.6kts
19kts
97%
0%
0%
0.6mm
17.9°C
1.1m
8.3sec
1.1m
8.2sec
13:00
11.5kts
18.4kts
98%
0%
0%
0.7mm
17.6°C
1.1m
6.7sec
1m
5.3sec
16:00
13.3kts
19.3kts
54%
0%
2%
0mm
19.2°C
1m
8sec
1m
6.7sec
19:00
11.3kts
22.3kts
35%
0%
2%
0mm
17.3°C
1.1m
7.9sec
1m
7sec
22:00
11.4kts
22.7kts
84%
0%
0%
0.1mm
17.4°C
1.2m
5.5sec
1.1m
5.5sec

Sunrise: 06:47 / Sunset: 19:35 Twilight: 06:13 / 20:08

Tuesday 15 September

Wind Gust Dir Cloud Mid High Rain Temp Swell Period Dir Wave Period Dir
01:00
11.8kts
24.1kts
73%
4%
31%
0.2mm
17.1°C
1.3m
5.9sec
1.3m
5.9sec
04:00
13.2kts
24.9kts
79%
13%
99%
3.2mm
16.9°C
1.5m
6.1sec
1.5m
6.1sec
07:00
13.9kts
21.3kts
89%
22%
67%
4.1mm
16°C
1.6m
6.4sec
1.6m
6.4sec
10:00
16kts
19.5kts
35%
0%
0%
0.2mm
16.2°C
1.6m
6.5sec
1.6m
6.5sec
13:00
16.1kts
19.5kts
45%
0%
0%
0.4mm
15.9°C
1.5m
6.8sec
1.5m
6.8sec
16:00
15.4kts
20kts
23%
0%
0%
0.1mm
16.4°C
1.4m
7sec
1.4m
7sec
19:00
11.1kts
17.2kts
14%
0%
0%
0.1mm
14.6°C
1.3m
7.2sec
1.3m
7.2sec
22:00
9.5kts
10.9kts
6%
0%
5%
0.1mm
12.7°C
1.3m
7.9sec
0.2m
3.5sec

Sunrise: 06:49 / Sunset: 19:32 Twilight: 06:15 / 20:06

Wednesday 16 September

Wind Gust Dir Cloud Mid High Rain Temp Swell Period Dir Wave Period Dir
01:00
10.6kts
15.1kts
4%
0%
28%
0.1mm
13.1°C
1.3m
8.5sec
1.3m
8.3sec
04:00
14.4kts
18kts
53%
0%
45%
0.2mm
14.3°C
1.4m
9sec
0.5m
3sec
07:00
11.3kts
15.3kts
66%
0%
33%
0.2mm
14.6°C
1.3m
9.5sec
-0.4m
0.2sec
10:00
12.7kts
15.3kts
81%
0%
3%
0mm
15.1°C
1.2m
9.9sec
0.1m
1.2sec
13:00
11.3kts
13.4kts
72%
0%
2%
0.1mm
16.9°C
1.1m
10.2sec
0.7m
6.4sec
16:00
14.3kts
15.9kts
15%
0%
3%
0mm
16.4°C
1.1m
10.2sec
1.1m
9.4sec
19:00
9.4kts
13kts
11%
0%
34%
0.1mm
13.8°C
1m
10.1sec
1m
9.8sec
22:00
8.2kts
10.2kts
4%
33%
100%
0.1mm
13°C
0.9m
10sec
0.9m
7.3sec

Sunrise: 06:50 / Sunset: 19:30 Twilight: 06:17 / 20:04

Thursday 17 September

Wind Gust Dir Cloud Mid High Rain Temp Swell Period Dir Wave Period Dir
01:00
9.5kts
16.8kts
20%
66%
100%
0.1mm
14°C
1m
7.1sec
1m
5.7sec
04:00
13.2kts
21.7kts
66%
99%
100%
0.2mm
14.6°C
1.4m
5.4sec
1.4m
5.4sec
07:00
14.8kts
23.4kts
81%
59%
68%
0.9mm
15.3°C
1.6m
5.9sec
1.6m
5.9sec
10:00
15.2kts
19.1kts
80%
1%
90%
1.3mm
15.5°C
1.5m
6.3sec
1.4m
6.3sec
13:00
15.8kts
18.2kts
67%
20%
90%
1.4mm
15.6°C
1.4m
6.6sec
1.4m
6.6sec
16:00
15.5kts
18.8kts
74%
76%
80%
0.2mm
16.2°C
1.4m
6.8sec
1.4m
6.8sec
19:00
14.9kts
21kts
55%
40%
40%
0.3mm
14.8°C
1.5m
6.8sec
1.5m
6.8sec
22:00
14.3kts
22.1kts
41%
2%
0%
0.1mm
13.2°C
1.5m
6.9sec
1.5m
6.9sec

Sunrise: 06:52 / Sunset: 19:28 Twilight: 06:18 / 20:01

Friday 18 September

Wind Gust Dir Cloud Mid High Rain Temp Swell Period Dir Wave Period Dir
01:00
12.8kts
19.4kts
40%
4%
0%
0.3mm
12.9°C
1.6m
7.2sec
1.6m
7.2sec
04:00
10.7kts
14.1kts
65%
0%
41%
0.2mm
12.2°C
1.5m
7.1sec
1.5m
7.2sec
07:00
8.7kts
11.6kts
68%
0%
70%
0.3mm
12.7°C
1.3m
7.1sec
1.3m
7.1sec
10:00
10.6kts
12.9kts
53%
7%
62%
0.2mm
15.6°C
1.1m
6.8sec
1.1m
6.8sec
13:00
11.7kts
13.5kts
43%
6%
58%
0.2mm
17.5°C
1m
6.8sec
1m
6.8sec
16:00
15.6kts
18.8kts
15%
3%
82%
0mm
16.8°C
1.2m
5.2sec
1.2m
5.3sec
19:00
14.8kts
22.8kts
17%
7%
67%
0mm
15°C
1.4m
5.4sec
1.4m
5.4sec
22:00
17.3kts
29.7kts
80%
50%
100%
0.3mm
15.6°C
1.8m
5.9sec
1.8m
5.9sec

Sunrise: 06:54 / Sunset: 19:25 Twilight: 06:20 / 19:59

Saturday 19 September

Wind Gust Dir Cloud Mid High Rain Temp Swell Period Dir Wave Period Dir
01:00
19.8kts
29.3kts
89%
71%
100%
2.7mm
16.5°C
2.1m
6.7sec
2.1m
6.7sec
04:00
17.8kts
27.5kts
100%
54%
100%
0.2mm
16.2°C
2m
7.1sec
2m
7.1sec
07:00
17.1kts
26.3kts
100%
36%
78%
0.8mm
15.9°C
1.9m
7.2sec
1.9m
7.2sec
10:00
16.1kts
25.7kts
95%
10%
52%
0.2mm
16°C
1.8m
7.2sec
1.8m
7.2sec
13:00
17.9kts
25.6kts
50%
9%
30%
0.3mm
18.1°C
1.7m
7.2sec
1.7m
7.2sec
16:00
17.7kts
23kts
3%
6%
6%
0mm
17.2°C
1.7m
7sec
1.7m
7sec
19:00
15kts
21.5kts
4%
15%
5%
0mm
15.1°C
1.6m
6.9sec
1.6m
6.9sec
22:00
12.3kts
19.1kts
2%
2%
3%
0mm
14°C
1.5m
6.8sec
1m
5.1sec

Sunrise: 06:55 / Sunset: 19:23 Twilight: 06:22 / 19:57

Sunday 20 September

Wind Gust Dir Cloud Mid High Rain Temp Swell Period Dir Wave Period Dir
01:00
10.6kts
15.7kts
1%
1%
3%
0mm
12.7°C
1.3m
6.9sec
0.6m
3.5sec
04:00
7.5kts
10.8kts
5%
3%
3%
0mm
11.9°C
1.2m
6.8sec
0.1m
2.8sec
07:00
6.2kts
8.3kts
5%
1%
12%
0mm
11.6°C
1.1m
7.2sec
-1m
-1sec
10:00
6.8kts
9.7kts
3%
2%
29%
0mm
15.9°C
0.9m
8.6sec
-1m
-1sec
13:00
7.1kts
9.4kts
2%
4%
18%
0mm
18.1°C
0.8m
8.7sec
-1m
-1sec
16:00
8.7kts
11kts
81%
4%
1%
0mm
17.4°C
0.8m
8.7sec
-0.5m
-0sec
19:00
6.1kts
11.7kts
73%
2%
1%
0mm
15.6°C
0.7m
8sec
-1m
-1sec

Sunrise: 06:57 / Sunset: 19:21 Twilight: 06:23 / 19:54

Wind angle today

Explore other spots in a sw wind direction.

sw locations >>
© Bigsalty Weather 2026 About Bigsalty · Contact us · Advertise with us · Terms & Conditions · Privacy Policy (GDPR)