Surf Forecasts:
How big are the waves at Crab Island today (18 Aug):
- Morning surf: Morning surf (18 Aug, local time) - 4ft (1.2m), 7s period with W swell.
- Afternoon surf: Afternoon surf (18 Aug, local time) - 3.5ft (1.0m), 6s period with W swell.
- Evening surf: Evening surf (18 Aug, local time) - 3.5ft (1.0m), 6s period with W swell.
The current surf forecast for Crab Island at 8AM is: 1.3m 7s primary swell from a West direction (forecast issued at 12:00am August 18). The wind direction is predicted to be cross-offshore.
| Time (BST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (18 Aug) | 4ft (1.2m) | 7s |
| Afternoon (18 Aug) | 3.5ft (1.0m) | 6s |
| Evening (18 Aug) | 3.5ft (1.0m) | 6s |
Table - waves today at Crab Island. (Swell directed towards the surf break)
Short Range ForecastLight rain (total 8mm), mostly falling on Tue night. Very mild (max 19°C on Tue morning, min 14°C on Wed night). Mainly fresh winds. | ||||||||||||||||||||||||
Tuesday 18 | Wednesday 19 | Thursday 20 | ||||||||||||||||||||||
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 | 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 4 | W 5 | W 7 | W 7 | W 6 | W 6 | WSW 6 | W 6 | W 6 | W 6 | W 6 | W 6 | WSW 6 | WSW 6 | WSW 6 | WSW 6 | W 7 | WSW 7 | W 7 | WSW 7 | WSW 7 | W 7 | W 7 | W 9 |
Wave Graph  | ||||||||||||||||||||||||
 kJ | 28 | 71 | 152 | 130 | 81 | 81 | 85 | 81 | 78 | 84 | 84 | 78 | 94 | 131 | 139 | 147 | 212 | 203 | 245 | 208 | 176 | 181 | 124 | 158 |
Wind (km/h) | ||||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross-off | cross-off | cross | cross | cross | cross | cross-off | cross-off | cross | cross | cross | cross | cross | cross | cross | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | off |
High Tide | 10:23PM9.02m | 10:41AM8.59m | 10:55PM8.48m | 11:12AM8.06m | 11:28PM7.89m | 11:51AM7.51m | ||||||||||||||||||
Low Tide | 4:25AM1.75m | 4:35PM1.94m | 4:54AM2.27m | 5:08PM2.48m | 5:28AM2.83m | 5:52PM3.08m | ||||||||||||||||||
 | |  | | | |  | |  |  |  | | |  | | | |  | | | | | | | |
 | — | 6:05 | — | — | — | — | — | — | — | 6:05 | — | — | — | — | — | — | — | 6:07 | — | — | — | — | — | — |
 | — | — | — | — | — | — | 8:32 | — | — | — | — | — | — | — | 8:30 | — | — | — | — | — | — | — | 8:29 | — |
mm | — | — | — | — | — | — | — | — | 1 | — | 1 | 1 | 1 | — | — | 1 | 1 | 1 | 1 | — | — | — | — | — |
Temp °C | 17 | 18 | 18 | 18 | 19 | 18 | 18 | 17 | 15 | 15 | 15 | 17 | 17 | 18 | 17 | 17 | 16 | 15 | 14 | 15 | 17 | 18 | 17 | 15 |
Feels °C | 14 | 16 | 17 | 16 | 15 | 14 | 15 | 13 | 13 | 13 | 14 | 14 | 12 | 13 | 12 | 13 | 12 | 12 | 12 | 13 | 13 | 14 | 13 | 11 |
Swell 1 Height (m) Direction Period (s) | — | — | W 7 | W 7 | W 6 | SW 17 | SW 17 | SW 17 | W 6 | W 6 | W 6 | SW 16 | W 9 | W 9 | SW 16 | SW 16 | SW 16 | WSW 7 | W 7 | WSW 7 | SW 14 | SW 14 | W 7 | W 9 |
| kJ | — | — | 152 | 130 | 81 | 11 | 11 | 12 | 78 | 84 | 84 | 11 | 15 | 15 | 10 | 10 | 10 | 203 | 245 | 208 | 8 | 8 | 124 | 158 |
Swell 2 Height (m) Direction Period (s) | — | — | — | SW 16 | SW 17 | — | — | — | SW 17 | SW 17 | SW 17 | W 16 | W 16 | W 16 | SW 16 | W 9 | W 9 | SW 15 | SW 15 | SW 15 | W 15 | — | SW 14 | SW 14 |
| kJ | — | — | — | 11 | 11 | — | — | — | 12 | 12 | 11 | 5 | 5 | 5 | 10 | 15 | 6 | 9 | 9 | 8 | 4 | — | 8 | 8 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | SW 16 | SW 16 | — | — | — | — | — | — | W 14 |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 10 | 10 | — | — | — | — | — | — | 4 |
Wind waves Height (m) Direction Period (s) | WSW 4 | W 5 | — | — | — | W 6 | WSW 6 | W 6 | — | — | — | W 6 | WSW 6 | WSW 6 | WSW 6 | WSW 6 | W 7 | — | — | — | WSW 7 | W 7 | NW 4 | NNW 4 |
| kJ | 28 | 71 | — | — | — | 81 | 85 | 81 | — | — | — | 78 | 94 | 131 | 139 | 147 | 212 | — | — | — | 176 | 181 | 8 | 6 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 361 | 398 | 10 | 144 | 414 | 779 | 361 | 176 | 0 | 0 | 1 | 316 | 275 | 361 | 420 | 176 | 144 | 144 | 0 | 0 | 49 | 222 | 1 | 0 |
Best forecast wave conditions in Wales - Gower | ||||||||||||||||||||||||
Best forecast wave conditions in United Kingdom | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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