Using Surf-Forecast’s Historical Surf Data To Find The Most Consistent Waves On Earth
Using our statistical data for 7000 spots dating back to 2006, we can find those waves that break the most, with the best winds.
Surf Forecasts:
Crab Island surfForecast / Wales – Gower / UK
48hr Weather and Surf, issued 5 pm Wednesday 17 Dec 2025 GMTForecast update in hr min s Forecast update imminent
Crab Island surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Crab Island sea temperature is
10.0° C
(Which is slightly cooler than normal)How big are the waves at Crab Island today?
The current surf forecast for Crab Island at 8PM is: 3.0m 10s primary swell from a Southwest direction and 2.4m 11s secondary swell from a West-southwest direction (forecast issued at 05:00pm December 17). The wind direction is predicted to be onshore.
| Time (GMT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (17 Dec) | - | - |
| Afternoon (17 Dec) | 10ft (3.0m) | 10s |
| Evening (17 Dec) | 11ft (3.5m) | 10s |
Table - waves today at Crab Island. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Wednesday 17 | Thursday 18 | Friday 19 | Saturday 20 | |||||||||||||||||||||
| 3 PM | 6 PM | 9 PM | 0 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 0 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 0 AM | 3 AM | 6 AM | 9 AM | 12 PM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 10 | 11 | 10 | 11 | 11 | 21 | 20 | 19 | 19 | 18 | 18 | 17 | 17 | 16 | 16 | 16 | 16 | 16 | 15 | 14 | 14 | 9 | 9 | 10 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 1478 | 1833 | 2349 | 1439 | 1144 | 5234 | 4642 | 4455 | 4042 | 5384 | 4598 | 4191 | 4501 | 4537 | 4549 | 4161 | 3500 | 2874 | 2242 | 1822 | 1676 | 580 | 632 | 940 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | on | on | cross- on | cross- on | cross- on | cross- on | cross- on | cross | cross- on | cross- off | cross | cross | cross- on | cross- on | cross | cross | cross- on | cross- on | on | on | on | on | on | cross- on |
High Tide / height (m) | 4:39PM 8.23 | 5:04AM 8.47 | 5:20PM 8.43 | 5:42AM 8.70 | 5:58PM 8.58 | 6:18AM 8.86 | ||||||||||||||||||
Low Tide / height (m) | 10:47PM 2.44 | 11:03AM 2.33 | 11:25PM 2.26 | 11:42AM 2.16 | 12:01AM 2.14 | |||||||||||||||||||
Wednesday 17 | Thursday 18 | Friday 19 | Saturday 20 | |||||||||||||||||||||
| Sunrise | - | - | - | - | - | - | 8:17 | - | - | - | - | - | - | - | 8:17 | - | - | - | - | - | - | - | 8:18 | - |
| Sunset | 4:07 | - | - | - | - | - | - | - | 4:07 | - | - | - | - | - | - | - | 4:07 | - | - | - | - | - | - | - |
 |  |  | |  | | |  | | |  |  | |  |  | |  | | | | | |  |  | |
Rain (mm) | 2 | 2 | 6 | 1 | - | - | 1 | 9 | 2 | 1 | - | - | - | 1 | 1 | 1 | - | - | - | - | - | - | - | - |
| Temp. °C | 11 | 11 | 12 | 12 | 11 | 11 | 10 | 9 | 10 | 9 | 9 | 10 | 9 | 9 | 9 | 10 | 9 | 10 | 9 | 9 | 8 | 9 | 9 | 10 |
| Feels °C (?) | 2 | 1 | 3 | 6 | 7 | 7 | 7 | 6 | 4 | 2 | 3 | 2 | 1 | 1 | 1 | 3 | 2 | 4 | 2 | 2 | 1 | 1 | 1 | 2 |
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
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