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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 6 pm 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
12.2° C
(Which is slightly warmer than usual)How big are the waves at Llantwit Major today?
The current surf forecast for Llantwit Major at 2AM is: 0.8m 7s primary swell from a West direction and 0.5m 3s secondary swell from a South direction (forecast issued at 06:00pm May 18). The wind direction is predicted to be cross-onshore.
| Time (BST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (19 May) | 2.5ft (0.8m) | 8s |
| Afternoon (19 May) | 4ft (1.2m) | 8s |
| Evening (19 May) | 5ft (1.6m) | 9s |
Table - waves today at Llantwit Major. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastModerate rain (total 14mm), heaviest on Mon night. Very mild (max 19°C on Thu morning, min 11°C on Mon afternoon). Winds decreasing (strong winds from the WSW on Tue afternoon, light winds from the SSE by Wed night). | ||||||||||||||||||||||||
Mon 18 | Tuesday 19 | Wednesday 20 | Thu 21 | |||||||||||||||||||||
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 | 1 AM | 4 AM | 7 AM | 10 AM | 1 PM | |
Swell Height Map |  |    |    |    | ||||||||||||||||||||
W 7 | W 7 | W 7 | W 7 | WSW 7 | WSW 8 | WSW 8 | WSW 8 | WSW 8 | WSW 9 | WSW 9 | WSW 9 | WSW 10 | WSW 14 | W 13 | W 13 | W 13 | W 13 | W 13 | W 12 | W 12 | W 12 | WSW 11 | WSW 11 | |
138 | 74 | 56 | 57 | 67 | 87 | 90 | 160 | 221 | 349 | 374 | 442 | 640 | 1449 | 1245 | 1138 | 987 | 764 | 547 | 418 | 284 | 279 | 217 | 194 | |
Wind (km/h) | ||||||||||||||||||||||||
cross-on | cross-on | cross-on | cross-on | cross-on | on | on | on | on | on | on | on | on | cross-on | cross-on | cross-on | cross-on | cross-on | on | on | cross-on | cross | cross-on | cross-on | |
High Tide | 8:44PM10.08m | 9:09AM9.83m | 9:31PM9.82m | 9:58AM9.37m | 10:21PM9.36m | 10:49AM8.76m | ||||||||||||||||||
Low Tide | 2:23PM0.35m | 2:49AM0.31m | 3:10PM0.61m | 3:38AM0.62m | 3:59PM1.02m | 4:32AM1.09m | ||||||||||||||||||
 |  |  | | | | |  |  |  |  |  | | | | | | |  |  | | | | | |
 | — | — | — | — | 5:16 | — | — | — | — | — | — | — | 5:16 | — | — | — | — | — | — | — | 5:15 | — | — | — |
 | — | 9:01 | — | — | — | — | — | — | — | 9:04 | — | — | — | — | — | — | — | 9:05 | — | — | — | — | — | 9:06 |
— | 1 | 4 | 2 | 2 | — | — | 1 | — | — | — | 1 | 1 | 1 | 1 | — | — | — | — | — | — | — | — | — | |
Temp °C | 11 | 11 | 11 | 11 | 13 | 13 | 14 | 15 | 14 | 13 | 12 | 12 | 12 | 12 | 13 | 14 | 15 | 14 | 14 | 13 | 13 | 13 | 15 | 19 |
6 | 6 | 7 | 5 | 8 | 9 | 9 | 9 | 7 | 6 | 4 | 5 | 6 | 6 | 7 | 8 | 10 | 10 | 13 | 11 | 11 | 12 | 14 | 18 | |
Swell 1 Height (m) Direction Period (s) | W 7 | W 7 | W 7 | W 7 | WSW 7 | WSW 8 | WSW 8 | W 15 | — | — | — | — | — | WSW 14 | — | — | — | — | W 13 | W 12 | W 12 | W 12 | WSW 11 | WSW 11 |
 kJ | 138 | 74 | 56 | 57 | 67 | 87 | 90 | 4 | — | — | — | — | — | 1449 | — | — | — | — | 547 | 418 | 284 | 279 | 217 | 194 |
Swell 2 Height (m) Direction Period (s) | — | W 10 | W 10 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | 18 | 18 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | SSW 3 | SSW 3 | S 3 | S 3 | S 4 | SSE 3 | SSW 3 | WSW 8 | WSW 8 | WSW 9 | WSW 9 | WSW 9 | WSW 10 | W 14 | W 13 | W 13 | W 13 | W 13 | — | — | — | — | — | — |
| kJ | 4 | 3 | 3 | 5 | 9 | 2 | 6 | 160 | 221 | 349 | 374 | 442 | 640 | 899 | 1245 | 1138 | 987 | 764 | — | — | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 74 | 218 | 237 | 465 | 470 | 470 | 488 | 475 | 321 | 381 | 381 | 395 | 401 | 300 | 300 | 459 | 191 | 142 | 21 | 74 | 28 | 21 | 21 | 21 |
Best forecast wave conditions in Wales - South East | ||||||||||||||||||||||||
Best forecast wave conditions in United Kingdom | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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