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:
Llantwit Major surfForecast / Wales – South East / UK
48hr Weather and Surf, issued 11 am Saturday 20 Dec 2025 GMTForecast update in hr min s Forecast update imminent
Llantwit Major surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Llantwit Major sea temperature is
10.0° C
(Which is 1.0°C colder than average for this time of year)How big are the waves at Llantwit Major today?
The current surf forecast for Llantwit Major at 1PM is: 0.6m 13s primary swell from a West direction and 0.8m 10s secondary swell from a West-southwest direction, 0.5m 3s secondary swell from a South-southeast direction (forecast issued at 11:00am December 20). The wind direction is predicted to be cross-shore.
| Time (GMT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (20 Dec) | 3.5ft (1.1m) | 13s |
| Afternoon (20 Dec) | 3.5ft (1.0m) | 12s |
| Evening (20 Dec) | 3.5ft (1.0m) | 12s |
Table - waves today at Llantwit Major. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Saturday 20 | Sunday 21 | Monday 22 | Tuesday 23 | |||||||||||||||||||||
| 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 | 3 PM | 6 PM | 9 PM | 0 AM | 3 AM | 6 AM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 13 | 10 | 12 | 12 | 12 | 12 | 12 | 16 | 15 | 15 | 15 | 15 | 15 | 14 | 14 | 14 | 13 | 13 | 12 | 12 | 12 | 12 | 11 | 11 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 434 | 125 | 318 | 313 | 303 | 298 | 317 | 1051 | 1092 | 1049 | 880 | 744 | 522 | 423 | 331 | 304 | 232 | 166 | 153 | 141 | 103 | 101 | 89 | 88 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross | cross | cross | cross- off | cross- off | cross | cross | cross- off | cross- off | cross- off | cross- off | cross- off | off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | off | cross- off | cross- off | cross- off | cross- off |
High Tide / height (m) | 6:38AM 8.56 | 6:57PM 8.49 | 7:14AM 8.75 | 7:33PM 8.59 | 7:50AM 8.85 | 8:09PM 8.60 | ||||||||||||||||||
Low Tide / height (m) | 12:49PM 1.56 | 1:03AM 1.54 | 1:25PM 1.45 | 1:38AM 1.45 | 2:01PM 1.42 | 2:13AM 1.45 | ||||||||||||||||||
Saturday 20 | Sunday 21 | Monday 22 | Tuesday 23 | |||||||||||||||||||||
| Sunrise | 8:15 | - | - | - | - | - | - | - | 8:15 | - | - | - | - | - | - | - | 8:15 | - | - | - | - | - | - | - |
| Sunset | - | - | 4:06 | - | - | - | - | - | - | - | 4:07 | - | - | - | - | - | - | - | 4:07 | - | - | - | - | - |
 |  | |  |  | | | |  | |  | | | | | | | | |  | | | | | |
Rain (mm) | - | - | - | - | 1 | 2 | 1 | - | - | - | 1 | - | 3 | 3 | 1 | - | - | - | - | - | - | - | - | - |
| Temp. °C | 8 | 9 | 9 | 8 | 9 | 10 | 9 | 8 | 8 | 9 | 10 | 9 | 9 | 10 | 10 | 9 | 8 | 8 | 9 | 9 | 9 | 9 | 8 | 8 |
| Feels °C (?) | 3 | 2 | 2 | 1 | 2 | 5 | 6 | 5 | 4 | 4 | 4 | 4 | 3 | 5 | 5 | 3 | 2 | 3 | 5 | 4 | 6 | 6 | 4 | 5 |
- 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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