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Llantwit Major Surf Forecast
/ Wales – South East (14 surf breaks) /
Surf Forecasts:
Llantwit Major surfForecast / Wales – South East / UK
48hr Weather and Surf, issued 12 am Monday 18 May 2026 BSTForecast 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
12.3° C
(Which is slightly warmer than usual)How big are the waves at Llantwit Major today?
The current surf forecast for Llantwit Major at 4AM is: 1.4m 7s primary swell from a West direction and 0.3m 12s secondary swell from a West direction (forecast issued at 12:00am May 18). The wind direction is predicted to be cross-onshore.
| Time (BST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (18 May) | 5ft (1.5m) | 7s |
| Afternoon (18 May) | 4ft (1.2m) | 7s |
| Evening (18 May) | 3ft (0.9m) | 7s |
Table - waves today at Llantwit Major. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastHeavy rain (total 28mm), heaviest during Sun night. Very mild (max 16°C on Wed afternoon, min 10°C on Sun night). Mainly strong winds. | ||||||||||||||||||||||||
Monday 18 | Tuesday 19 | Wednesday 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 |    |    |    | |||||||||||||||||||||
W 6 | W 7 | W 7 | W 7 | W 7 | W 7 | W 7 | W 7 | W 7 | W 7 | WSW 7 | WSW 8 | WSW 8 | WSW 8 | WSW 8 | WSW 9 | WSW 9 | WSW 10 | WSW 14 | WSW 13 | W 13 | W 13 | W 13 | W 13 | |
94 | 195 | 212 | 243 | 178 | 135 | 92 | 56 | 43 | 48 | 57 | 92 | 190 | 293 | 376 | 374 | 495 | 602 | 1470 | 1162 | 1003 | 865 | 764 | 547 | |
Wind (km/h) | ||||||||||||||||||||||||
on | cross-on | cross-on | on | on | on | cross-on | cross | cross-on | cross-on | on | cross-on | on | on | on | on | on | on | on | on | cross-on | cross-on | cross-on | on | |
High Tide | 8:22AM10.05m | 8:44PM10.08m | 9:09AM9.83m | 9:31PM9.82m | 9:58AM9.37m | |||||||||||||||||||
Low Tide | 2:02AM0.23m | 2:23PM0.35m | 2:49AM0.31m | 3:10PM0.61m | 3:38AM0.62m | 3:59PM1.02m | ||||||||||||||||||
 | |  | |  | | | | | | | | |  | |  |  | |  | |  | | |  | |
 | — | 5:18 | — | — | — | — | — | — | — | 5:16 | — | — | — | — | — | — | — | 5:16 | — | — | — | — | — | — |
 | — | — | — | — | — | — | 9:01 | — | — | — | — | — | — | — | 9:04 | — | — | — | — | — | — | — | 9:05 | — |
2 | 4 | 2 | 1 | 1 | 1 | 1 | 2 | 3 | 3 | 1 | 1 | 1 | — | 1 | — | 2 | 1 | — | — | — | — | — | — | |
Temp °C | 10 | 10 | 10 | 10 | 12 | 13 | 11 | 10 | 11 | 12 | 13 | 13 | 14 | 14 | 13 | 12 | 12 | 13 | 13 | 14 | 15 | 16 | 15 | 15 |
4 | 4 | 4 | 4 | 7 | 8 | 6 | 5 | 5 | 7 | 8 | 8 | 7 | 7 | 5 | 6 | 5 | 6 | 7 | 8 | 9 | 11 | 12 | 14 | |
Swell 1 Height (m) Direction Period (s) | WSW 11 | W 12 | W 11 | W 12 | — | W 7 | W 7 | W 7 | W 7 | W 7 | WSW 7 | WSW 8 | — | — | — | W 13 | — | — | — | — | — | — | W 13 | W 13 |
 kJ | 43 | 26 | 23 | 24 | — | 135 | 92 | 56 | 43 | 48 | 57 | 92 | — | — | — | 3 | — | — | — | — | — | — | 764 | 547 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | W 10 | W 10 | W 10 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | 18 | 18 | 8 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | W 6 | W 7 | W 7 | W 7 | W 7 | — | — | S 3 | S 3 | S 3 | S 3 | SSW 3 | WSW 8 | WSW 8 | WSW 8 | WSW 9 | WSW 9 | WSW 10 | WSW 14 | WSW 13 | W 13 | W 13 | — | — |
| kJ | 94 | 195 | 212 | 243 | 178 | — | — | 1 | 4 | 8 | 4 | 6 | 190 | 293 | 376 | 374 | 495 | 602 | 1470 | 1162 | 1003 | 865 | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 353 | 173 | 134 | 155 | 286 | 74 | 216 | 237 | 465 | 465 | 74 | 488 | 475 | 394 | 381 | 300 | 325 | 300 | 300 | 300 | 300 | 257 | 142 | 21 |
Best forecast wave conditions in Wales - South East | ||||||||||||||||||||||||
Best forecast wave conditions in United Kingdom | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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