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Trefor Surf Forecast
/ Wales – Lleyn (14 surf breaks) /
Surf Forecasts:
Trefor surfForecast / Wales – Lleyn / UK
48hr Weather and Surf, issued 12 am Tuesday 12 May 2026 BSTForecast update in hr min s Forecast update imminent
Trefor surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Trefor sea temperature is
12.2° C
(Which is 1.9°C warmer than normal for this time of year)How big are the waves at Trefor today?
The current surf forecast for Trefor at 8AM is: 0.1m 9s primary swell from a Southwest direction and 0.4m 3s secondary swell from a West-northwest direction (forecast issued at 12:00am May 12). The wind direction is predicted to be cross-onshore.
| Time (BST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (12 May) | 2ft (0.6m) | 3s |
| Afternoon (12 May) | 3.5ft (1.0m) | 5s |
| Evening (12 May) | 2.5ft (0.7m) | 4s |
Table - waves today at Trefor. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastModerate rain (total 12mm), heaviest on Thu morning. Very mild (max 12°C on Tue afternoon, min 7°C on Mon night). Winds increasing (calm on Mon night, strong winds from the WNW by Tue night). | ||||||||||||||||||||||||
Tuesday 12 | Wednesday 13 | Thursday 14 | ||||||||||||||||||||||
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 |    |    |    | |||||||||||||||||||||
SW 8 | SW 8 | SW 9 | WNW 4 | NW 4 | NW 5 | WNW 5 | W 4 | W 5 | WNW 6 | WNW 7 | WNW 7 | WNW 6 | WNW 6 | NW 6 | NW 6 | NW 6 | NW 7 | NW 7 | NW 6 | NW 6 | NW 6 | NW 5 | NW 5 | |
3 | 3 | 3 | 14 | 45 | 33 | 21 | 13 | 78 | 224 | 319 | 331 | 216 | 123 | 77 | 124 | 220 | 267 | 246 | 188 | 124 | 62 | 38 | 29 | |
Wind (km/h) | ||||||||||||||||||||||||
glassy | cross-off | cross-on | cross-on | on | cross-on | cross | cross-on | cross | cross-on | cross-on | cross-on | cross-on | on | on | on | on | on | on | on | on | on | cross-on | cross-on | |
High Tide | 5:30AM2.94m | 6:13PM2.80m | 6:22AM3.19m | 6:58PM3.11m | 7:09AM3.47m | 7:40PM3.42m | ||||||||||||||||||
Low Tide | 11:49PM1.19m | 12:33PM0.79m | 00:51AM0.99m | 1:26PM0.54m | 1:44AM0.74m | 2:14PM0.30m | ||||||||||||||||||
 |  |  | |  | | | | |  |  | |  | | | | |  | | | | | | | |
 | — | 5:24 | — | — | — | — | — | — | — | 5:22 | — | — | — | — | — | — | — | 5:22 | — | — | — | — | — | — |
 | — | — | — | — | — | — | 9:02 | — | — | — | — | — | — | — | 9:05 | — | — | — | — | — | — | — | 9:07 | — |
— | — | — | — | — | — | — | — | — | 1 | 1 | 1 | 1 | 1 | 1 | — | 1 | — | 1 | 1 | 2 | 1 | — | — | |
Temp °C | 7 | 8 | 9 | 9 | 10 | 11 | 12 | 11 | 9 | 9 | 8 | 9 | 10 | 10 | 10 | 9 | 9 | 9 | 8 | 9 | 9 | 10 | 11 | 8 |
5 | 5 | 5 | 3 | 2 | 6 | 7 | 4 | 1 | 0 | -2 | -1 | 1 | 2 | 3 | 0 | 0 | 1 | 1 | 2 | 3 | 3 | 6 | 4 | |
Swell 1 Height (m) Direction Period (s) | — | SW 8 | SW 9 | SW 9 | SW 8 | SW 8 | SW 8 | SW 8 | — | SW 8 | W 17 | W 17 | SW 7 | WSW 7 | SW 7 | SW 6 | WSW 6 | W 16 | W 16 | SW 15 | SW 15 | SW 14 | SW 14 | SW 14 |
 kJ | — | 3 | 3 | 3 | 3 | 3 | 3 | 3 | — | 3 | 6 | 5 | 22 | 19 | 11 | 9 | 4 | 5 | 5 | 9 | 8 | 8 | 8 | 8 |
Swell 2 Height (m) Direction Period (s) | SW 8 | — | — | — | W 18 | — | — | — | — | — | — | — | W 16 | W 16 | WSW 5 | WSW 5 | W 16 | W 16 | — | — | — | — | — | W 7 |
| kJ | 3 | — | — | — | 7 | — | — | — | — | — | — | — | 5 | 5 | 10 | 2 | 5 | 5 | — | — | — | — | — | 1 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | W 18 | — | — | — | — | — | — | — | W 16 | W 16 | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | 6 | — | — | — | — | — | — | — | 5 | 5 | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | WNW 3 | WNW 4 | NW 4 | NW 5 | WNW 5 | W 4 | W 5 | WNW 6 | WNW 7 | WNW 7 | WNW 6 | WNW 6 | NW 6 | NW 6 | NW 6 | NW 7 | NW 7 | NW 6 | NW 6 | NW 6 | NW 5 | NW 5 |
| kJ | — | — | 1 | 14 | 45 | 33 | 21 | 13 | 78 | 224 | 319 | 331 | 216 | 123 | 77 | 124 | 220 | 267 | 246 | 188 | 124 | 62 | 38 | 29 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 215 | 206 | 206 | 298 | 316 | 296 | 296 | 296 | 287 | 298 | 301 | 612 | 1332 | 656 | 627 | 593 | 313 | 593 | 593 | 347 | 345 | 270 | 298 | 161 |
Best forecast wave conditions in Lleyn Peninsula | ||||||||||||||||||||||||
Best forecast wave conditions in United Kingdom | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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