Swansea Bay Weather Forecast
GFS 0.5° atmospheric and GFSWave 0.25° marine forecast data for Swansea Bay.
Tuesday 13 May (Today)
Wind | Gust | Swell | Period | Rain | Cloud | Temp | Chill | [Wind rating] | |||
---|---|---|---|---|---|---|---|---|---|---|---|
01:00 | 6.9kts | 8kts | 0.3m | 8.5sec | 0.2mm | 0% | 11°C | 12°C |
| ||
04:00 | 7kts | 11.9kts | 0.3m | 7.1sec | 0mm | 0% | 11°C | 11°C |
| ||
07:00 | 7.6kts | 15.5kts | 0.4m | 3.3sec | 0mm | 0% | 11°C | 12°C |
| ||
10:00 | 10.9kts | 16.5kts | 0.5m | 3.2sec | 0mm | 0% | 13°C | 13°C |
| ||
13:00 | 9.1kts | 13.3kts | 0.5m | 3.4sec | 0.2mm | 1% | 14°C | 15°C |
| ||
16:00 | 7.7kts | 9.9kts | 0.4m | 3.3sec | 0.9mm | 1% | 14°C | 15°C |
| ||
19:00 | 6.5kts | 9.1kts | 0.3m | 7.7sec | 2.6mm | 0% | 14°C | 14°C |
| ||
22:00 | 6.4kts | 10.6kts | 0.2m | 12.7sec | 1.6mm | 0% | 12°C | 13°C |
|
05:23 / 21:00 04:42 / 21:42
°C
Today's tide data
Time | Height (m) |
---|---|
01:11:53 | L +1.6 |
07:28:01 | H +8.87 |
13:29:01 | L +1.64 |
19:46:31 | H +8.98 |
Tide chart for Mumbles

Tide times vary with distance to report location; all times incorporate BST; for more tide information click here
Wednesday 14 May (Tomorrow)
Wind | Gust | Swell | Period | Rain | Cloud | Temp | Chill | [Wind rating] | |||
---|---|---|---|---|---|---|---|---|---|---|---|
01:00 | 6.7kts | 12kts | 0.2m | 12.8sec | 1.8mm | 0% | 11°C | 12°C |
| ||
04:00 | 10.9kts | 19.6kts | 0.3m | 4.2sec | 0mm | 0% | 11°C | 11°C |
| ||
07:00 | 7.5kts | 16kts | 0.5m | 3.3sec | 0mm | 0% | 11°C | 11°C |
| ||
10:00 | 8.9kts | 12.3kts | 0.6m | 3.7sec | 0mm | 0% | 13°C | 13°C |
| ||
13:00 | 8.6kts | 12kts | 0.6m | 3.8sec | 0mm | 0% | 14°C | 14°C |
| ||
16:00 | 6.5kts | 8.1kts | 0.4m | 3.5sec | 0mm | 0% | 14°C | 15°C |
| ||
19:00 | 3.9kts | 5.7kts | 0.2m | 9.2sec | 0mm | 0% | 14°C | 15°C |
| ||
22:00 | 7kts | 7kts | 0.2m | 11.2sec | 0mm | 0% | 11°C | 13°C |
|
05:22 / 21:02 04:40 / 21:43
Thursday 15 May
Wind | Gust | Swell | Period | Rain | Cloud | Temp | Chill | [Wind rating] | |||
---|---|---|---|---|---|---|---|---|---|---|---|
01:00 | 6.3kts | 8.1kts | 0.2m | 12.5sec | 0mm | 0% | 11°C | 11°C |
| ||
04:00 | 6.6kts | 9.7kts | 0.3m | 5.2sec | 0mm | 0% | 10°C | 10°C |
| ||
07:00 | 5.3kts | 6.3kts | 0.4m | 3.2sec | 0mm | 0% | 11°C | 10°C |
| ||
10:00 | 5.2kts | 6.4kts | 0.3m | 3.2sec | 0mm | 0% | 13°C | 12°C |
| ||
13:00 | 3kts | 5.6kts | 0.3m | 7.7sec | 0mm | 0% | 15°C | 13°C |
| ||
16:00 | 4.4kts | 6kts | 0.3m | 12.4sec | 0mm | 1% | 14°C | 13°C |
| ||
19:00 | 0.9kts | 4kts | 0.3m | 4sec | 0mm | 1% | 13°C | 14°C |
| ||
22:00 | 2kts | 2.7kts | 0.3m | 12.6sec | 0mm | 0% | 11°C | 12°C |
|
05:20 / 21:03 04:38 / 21:45
Friday 16 May
Wind | Gust | Swell | Period | Rain | Cloud | Temp | Chill | [Wind rating] | |||
---|---|---|---|---|---|---|---|---|---|---|---|
01:00 | 10.2kts | 14.6kts | 0.3m | 12.3sec | 0mm | 0% | 10°C | 11°C |
| ||
04:00 | 8.1kts | 9.7kts | 0.4m | 11.9sec | 0mm | 0% | 10°C | 7°C |
| ||
07:00 | 5.8kts | 6.7kts | 0.4m | 11.7sec | 0mm | 0% | 11°C | 10°C |
| ||
10:00 | 5.5kts | 4.9kts | 0.4m | 11.3sec | 0mm | 0% | 13°C | 11°C |
| ||
13:00 | 4.8kts | 4.8kts | 0.4m | 11.1sec | 0mm | 1% | 15°C | 13°C |
| ||
16:00 | 0.4kts | 2.2kts | 0.4m | 11sec | 0mm | 0% | 15°C | 14°C |
| ||
19:00 | 2kts | 4kts | 0.4m | 11sec | 0mm | 0% | 14°C | 14°C |
| ||
22:00 | 5.1kts | 5.3kts | 0.5m | 11.1sec | 0mm | 0% | 11°C | 12°C |
|
05:19 / 21:05 04:37 / 21:47
Saturday 17 May
Wind | Gust | Swell | Period | Rain | Cloud | Temp | Chill | [Wind rating] | |||
---|---|---|---|---|---|---|---|---|---|---|---|
01:00 | 5.7kts | 5.7kts | 0.5m | 11sec | 0mm | 0% | 11°C | 11°C |
| ||
04:00 | 6.6kts | 7kts | 0.5m | 10.9sec | 0mm | 0% | 10°C | 11°C |
| ||
07:00 | 5kts | 8.1kts | 0.5m | 10.8sec | 0mm | 0% | 11°C | 10°C |
| ||
10:00 | 5.1kts | 7.7kts | 0.5m | 13.3sec | 0mm | 0% | 13°C | 12°C |
| ||
13:00 | 5.4kts | 8.6kts | 0.6m | 15.1sec | 0mm | 0% | 15°C | 14°C |
| ||
16:00 | 1.4kts | 6.2kts | 0.7m | 14.3sec | 0mm | 0% | 15°C | 15°C |
| ||
19:00 | 1.1kts | 5kts | 0.8m | 13.6sec | 0mm | 0% | 14°C | 15°C |
| ||
22:00 | 4.8kts | 5kts | 0.8m | 13.3sec | 0mm | 0% | 11°C | 13°C |
|
05:17 / 21:06 04:35 / 21:49
Sunday 18 May
Wind | Gust | Swell | Period | Rain | Cloud | Temp | Chill | [Wind rating] | |||
---|---|---|---|---|---|---|---|---|---|---|---|
01:00 | 6.2kts | 6.3kts | 0.9m | 12.6sec | 0mm | 0% | 11°C | 12°C |
| ||
04:00 | 4.3kts | 4.3kts | 0.9m | 12.4sec | 0mm | 0% | 10°C | 11°C |
| ||
07:00 | 4kts | 4.7kts | 0.8m | 11.8sec | 0mm | 0% | 11°C | 11°C |
| ||
10:00 | 4.6kts | 6.6kts | 0.8m | 11.7sec | 0mm | 0% | 13°C | 13°C |
| ||
13:00 | 5kts | 7.2kts | 0.8m | 11.2sec | 0mm | 0% | 15°C | 13°C |
| ||
16:00 | 1.6kts | 5.5kts | 0.7m | 11sec | 0mm | 0% | 15°C | 14°C |
| ||
19:00 | 2kts | 4.8kts | 0.7m | 10.8sec | 0mm | 0% | 14°C | 14°C |
| ||
22:00 | 3.4kts | 3.5kts | 0.6m | 10.4sec | 0mm | 0% | 12°C | 13°C |
|
05:16 / 21:08 04:33 / 21:50
Monday 19 May
Wind | Gust | Swell | Period | Rain | Cloud | Temp | Chill | [Wind rating] | |||
---|---|---|---|---|---|---|---|---|---|---|---|
01:00 | 9.4kts | 14.6kts | 0.6m | 10.2sec | 0mm | 0% | 11°C | 12°C |
| ||
04:00 | 10.6kts | 16.9kts | 0.7m | 10.1sec | 0mm | 0% | 10°C | 10°C |
| ||
07:00 | 12kts | 20.7kts | 0.8m | 9.8sec | 0mm | 0% | 11°C | 6°C |
| ||
10:00 | 13.1kts | 18.8kts | 0.8m | 9.6sec | 0mm | 0% | 13°C | 12°C |
| ||
13:00 | 11.5kts | 17.1kts | 0.8m | 9.5sec | 0mm | 0% | 14°C | 15°C |
| ||
16:00 | 9.7kts | 11.6kts | 0.6m | 9.3sec | 0mm | 0% | 15°C | 16°C |
| ||
19:00 | 13.9kts | 20.9kts | 0.6m | 9.1sec | 0mm | 0% | 14°C | 16°C |
| ||
22:00 | 10.1kts | 16.5kts | 0.6m | 9sec | 0mm | 0% | 12°C | 13°C |
|
05:15 / 21:09 04:32 / 21:52
Tuesday 20 May
Wind | Gust | Swell | Period | Rain | Cloud | Temp | Chill | [Wind rating] | |||
---|---|---|---|---|---|---|---|---|---|---|---|
01:00 | 14.2kts | 25.1kts | 0.7m | 9sec | 0mm | 0% | 11°C | 12°C |
| ||
04:00 | 13.5kts | 26.3kts | 0.7m | 4.5sec | 0mm | 0% | 11°C | 11°C |
| ||
07:00 | 12.5kts | 23.9kts | 0.8m | 4.2sec | 0mm | 0% | 11°C | 11°C |
|
05:13 / 21:10 04:30 / 21:54