Surf Forecasts:
How big are the waves at Crab Island today (18 Sep):
- Afternoon surf: Afternoon surf (18 Sep, local time) - 6ft (1.8m), 6s period with WSW swell.
- Evening surf: Evening surf (18 Sep, local time) - 7.5ft (2.3m), 8s period with WSW swell.
The current surf forecast for Crab Island at 10PM is: 2.3m 8s primary swell from a West-southwest direction and 0.2m 12s secondary swell from a West direction (forecast issued at 06:00pm September 18). The wind direction is predicted to be cross-onshore.
| Time (BST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (18 Sep) | - | - |
| Afternoon (18 Sep) | 6ft (1.8m) | 6s |
| Evening (18 Sep) | 7.5ft (2.3m) | 8s |
Table - waves today at Crab Island. (Swell directed towards the surf break)
Short Range ForecastLight rain (total 3mm), mostly falling on Fri night. Very mild (max 18°C on Sat morning, min 13°C on Sat night). Winds decreasing (strong winds from the SW on Fri afternoon, calm by Sun night). | |||||||||||||||||||
Fri 18 | Saturday 19 | Sunday 20 | |||||||||||||||||
4 PM | 7 PM | 10 PM | 1 AM | 4 AM | 7 AM | 10 AM | 1 PM | 4 PM | 7 PM | 10 PM | 1 AM | 4 AM | 7 AM | 10 AM | 1 PM | 4 PM | 7 PM | 10 PM | |
Swell Height Map |  |  |  |  |  |  |  | ||||||||||||
Wave Height (m) Direction Period (s) | WSW 6 | WSW 7 | WSW 8 | WSW 8 | WSW 8 | WSW 8 | WSW 8 | WSW 8 | WSW 8 | WSW 8 | WSW 7 | WSW 7 | WSW 7 | WSW 7 | W 7 | WSW 7 | WSW 7 | WSW 7 | WSW 7 |
Wave Graph  | |||||||||||||||||||
 kJ | 300 | 590 | 604 | 555 | 555 | 623 | 694 | 555 | 406 | 336 | 252 | 204 | 166 | 118 | 97 | 82 | 67 | 69 | 54 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross | cross | cross | cross | cross | cross-off | cross-off | cross-off | cross-off | cross | cross-off | off |
High Tide | 11:19PM7.23m | 11:50AM6.98m | 00:25AM6.64m | 1:30PM6.60m | |||||||||||||||
Low Tide | 5:00PM3.19m | 5:15AM3.56m | 6:01PM3.82m | 6:38AM4.13m | 7:56PM4.09m | ||||||||||||||
 | |  |  |  | |  |  |  | | | | | |  | | | |  | |
 | — | — | — | — | 6:56 | — | — | — | — | — | — | — | 6:56 | — | — | — | — | — | — |
 | — | 7:23 | — | — | — | — | — | — | — | 7:22 | — | — | — | — | — | — | — | 7:20 | — |
mm | — | — | 1 | — | — | — | 1 | 1 | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 16 | 16 | 17 | 16 | 16 | 16 | 17 | 18 | 17 | 16 | 16 | 15 | 14 | 13 | 13 | 15 | 15 | 15 | 13 |
Feels °C | 9 | 9 | 11 | 10 | 10 | 10 | 11 | 13 | 12 | 11 | 11 | 10 | 11 | 11 | 11 | 12 | 12 | 12 | 10 |
Swell 1 Height (m) Direction Period (s) | W 13 | W 12 | W 12 | — | — | — | — | — | — | — | W 9 | W 10 | SW 14 | WSW 7 | W 7 | WSW 7 | WSW 7 | WSW 7 | WSW 7 |
| kJ | 13 | 12 | 12 | — | — | — | — | — | — | — | 87 | 66 | 8 | 118 | 97 | 82 | 67 | 69 | 54 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | W 10 | SW 14 | SW 14 | W 14 | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | 48 | 7 | 8 | 4 | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | W 14 | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 4 | — | — | — |
Wind waves Height (m) Direction Period (s) | WSW 6 | WSW 7 | WSW 8 | WSW 8 | WSW 8 | WSW 8 | WSW 8 | WSW 8 | WSW 8 | WSW 8 | WSW 7 | WSW 7 | WSW 7 | — | — | — | — | — | — |
| kJ | 300 | 590 | 604 | 555 | 555 | 623 | 694 | 555 | 406 | 336 | 252 | 204 | 166 | — | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 368 | 368 | 320 | 320 | 320 | 308 | 385 | 368 | 368 | 182 | 120 | 133 | 25 | 0 | 0 | 0 | 7 | 0 | 15 |
Best forecast wave conditions in Wales - Gower | |||||||||||||||||||
Best forecast wave conditions in United Kingdom | |||||||||||||||||||
Header Global | |||||||||||||||||||
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