Surf Forecasts:
How big are the waves at Crab Island today (21 Aug):
- Afternoon surf: Afternoon surf (21 Aug, local time) - 2ft (0.6m), 6s period with W swell.
- Evening surf: Evening surf (21 Aug, local time) - 1.5ft (0.5m), 6s period with W swell.
The current surf forecast for Crab Island at 11PM is: 0.3m 8s primary swell from a West-southwest direction and 0.4m 5s secondary swell from a West direction (forecast issued at 06:00pm August 21). The wind direction is predicted to be offshore.
| Time (BST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (21 Aug) | - | - |
| Afternoon (21 Aug) | 2ft (0.6m) | 6s |
| Evening (21 Aug) | 1.5ft (0.5m) | 6s |
Table - waves today at Crab Island. (Swell directed towards the surf break)
Short Range ForecastLight rain (total 2mm), mostly falling on Fri afternoon. Warm (max 21°C on Sun afternoon, min 12°C on Fri night). Winds increasing (calm on Sat morning, fresh winds from the E by Mon morning). | |||||||||||||||||||
Fri 21 | Saturday 22 | Sunday 23 | |||||||||||||||||
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) | W 6 | W 6 | WSW 8 | WSW 8 | W 8 | WSW 9 | WSW 10 | WSW 10 | WSW 10 | WSW 9 | WSW 9 | WSW 9 | WSW 9 | WSW 9 | WSW 9 | WSW 9 | WSW 9 | WSW 12 | WSW 11 |
Wave Graph  | |||||||||||||||||||
 kJ | 27 | 16 | 13 | 14 | 22 | 15 | 18 | 18 | 18 | 17 | 16 | 16 | 8 | 8 | 8 | 8 | 7 | 15 | 24 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | glassy | cross-on | cross | cross-off | off | cross-off | cross-off | cross-off | cross-on | on | glassy | glassy | off |
High Tide | 1:23AM6.79m | 2:19PM6.75m | 2:58AM6.69m | 3:48PM7.01m | |||||||||||||||
Low Tide | 7:01PM3.61m | 7:43AM3.84m | 8:36PM3.79m | 9:21AM3.79m | 10:00PM3.49m | ||||||||||||||
 |  |  |  | |  | | | | | | | | | | | | | | |
 | — | — | — | — | 6:11 | — | — | — | — | — | — | — | 6:13 | — | — | — | — | — | — |
 | — | 8:27 | — | — | — | — | — | — | — | 8:24 | — | — | — | — | — | — | — | 8:22 | — |
mm | — | 1 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 18 | 17 | 17 | 14 | 13 | 12 | 14 | 16 | 18 | 18 | 15 | 14 | 14 | 13 | 15 | 18 | 21 | 21 | 20 |
Feels °C | 14 | 15 | 13 | 10 | 11 | 10 | 13 | 14 | 15 | 14 | 11 | 11 | 12 | 11 | 14 | 16 | 19 | 18 | 17 |
Swell 1 Height (m) Direction Period (s) | WSW 8 | W 6 | W 5 | W 5 | W 8 | WSW 9 | WSW 10 | WSW 10 | WSW 10 | WSW 9 | WSW 9 | WSW 9 | WSW 9 | WSW 9 | WSW 9 | WSW 9 | WSW 9 | WSW 12 | WSW 11 |
| kJ | 13 | 16 | 9 | 9 | 22 | 15 | 18 | 18 | 18 | 17 | 16 | 16 | 8 | 8 | 8 | 8 | 7 | 15 | 24 |
Swell 2 Height (m) Direction Period (s) | SW 13 | WSW 8 | WSW 8 | WSW 8 | SW 16 | W 10 | SW 15 | SW 15 | SW 15 | SW 15 | SW 15 | — | SW 15 | SW 15 | SW 14 | SW 14 | SW 14 | W 8 | — |
| kJ | 7 | 13 | 13 | 14 | 10 | 2 | 9 | 9 | 8 | 8 | 8 | — | 8 | 8 | 8 | 8 | 7 | 6 | — |
Swell 3 Height (m) Direction Period (s) | SW 16 | SW 13 | SW 13 | SW 13 | SW 13 | SW 16 | SW 15 | — | — | — | — | SW 15 | — | — | SW 15 | — | — | — | — |
| kJ | 10 | 7 | 7 | 7 | 7 | 10 | 9 | — | — | — | — | 8 | — | — | 8 | — | — | — | — |
Wind waves Height (m) Direction Period (s) | W 6 | WNW 4 | — | — | — | — | — | — | — | — | NNW 2 | — | — | — | — | — | — | — | — |
| kJ | 27 | 5 | — | — | — | — | — | — | — | — | 1 | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 319 | 15 | 21 | 15 | 15 | 15 | 15 | 51 | 199 | 189 | 140 | 20 | 20 | 135 | 135 | 73 | 127 | 21 | 51 |
Best forecast wave conditions in Wales - Gower | |||||||||||||||||||
Best forecast wave conditions in United Kingdom | |||||||||||||||||||
Header Global | |||||||||||||||||||
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