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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 pm Friday 15 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
12.1° C
(Which is 1.5°C warmer than normal for this time of year)How big are the waves at Trefor today?
The current surf forecast for Trefor at 6PM is: 0.6m 4s primary swell from a Northwest direction and 0.1m 14s secondary swell from a West direction, 0.1m 6s secondary swell from a West direction (forecast issued at 12:00pm May 15). The wind direction is predicted to be onshore.
| Time (BST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (15 May) | 3.5ft (1.1m) | 6s |
| Afternoon (15 May) | 2.5ft (0.8m) | 4s |
| Evening (15 May) | 1.5ft (0.5m) | 4s |
Table - waves today at Trefor. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastLight rain (total 8mm), mostly falling on Sat morning. Very mild (max 11°C on Sat afternoon, min 8°C on Fri night). Winds increasing (calm on Fri night, fresh winds from the SSW by Sun afternoon). | ||||||||||||||||||||||||
Fri 15 | Saturday 16 | Sunday 17 | Mon 18 | |||||||||||||||||||||
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 | 1 AM | 4 AM | 7 AM | |
Swell Height Map |    |    |    |    | ||||||||||||||||||||
NW 6 | NW 4 | NW 4 | NW 4 | W 13 | W 13 | W 13 | W 13 | W 13 | W 13 | W 13 | W 13 | SW 4 | W 4 | W 4 | W 5 | WSW 5 | NW 4 | NW 4 | SW 6 | W 12 | W 12 | SW 6 | SW 6 | |
69 | 39 | 17 | 7 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 14 | 19 | 30 | 34 | 35 | 7 | 3 | 0 | 3 | 3 | 73 | 59 | |
Wind (km/h) | ||||||||||||||||||||||||
on | on | on | on | glassy | glassy | cross-off | cross-on | cross-off | off | cross-off | cross-on | cross-on | cross-on | cross-on | cross | cross | cross-off | cross-off | cross-off | cross-off | cross-off | cross | cross | |
High Tide | 7:54AM3.73m | 8:21PM3.69m | 8:39AM3.92m | 9:03PM3.89m | 9:25AM4.01m | 9:47PM4.01m | ||||||||||||||||||
Low Tide | 3:01PM0.13m | 3:22AM0.25m | 3:47PM0.04m | 4:09AM0.07m | 4:34PM0.05m | 4:58AM-0.02m | ||||||||||||||||||
 | | |  |  | | |  | |  | | | |  |  | | | |  | |  | | | | |
 | 5:20 | — | — | — | — | — | 5:18 | — | — | — | — | — | — | — | 5:16 | — | — | — | — | — | — | — | 5:15 | — |
 | — | — | — | 9:07 | — | — | — | — | — | — | — | 9:09 | — | — | — | — | — | — | — | 9:10 | — | — | — | 9:13 |
— | — | — | — | — | — | — | — | — | 1 | 1 | 1 | — | — | — | — | 1 | — | 1 | 1 | 1 | 1 | — | — | |
Temp °C | 9 | 9 | 9 | 9 | 9 | 8 | 9 | 9 | 9 | 9 | 11 | 10 | 10 | 9 | 8 | 9 | 9 | 10 | 10 | 10 | 9 | 9 | 8 | 9 |
1 | 2 | 4 | 5 | 7 | 5 | 6 | 6 | 6 | 6 | 7 | 7 | 6 | 3 | 3 | 4 | 3 | 4 | 3 | 4 | 6 | 6 | 5 | 7 | |
Swell 1 Height (m) Direction Period (s) | W 14 | W 14 | W 14 | W 13 | WNW 4 | NNW 5 | NNW 5 | NNW 5 | NNW 5 | — | — | W 13 | SW 4 | — | — | — | — | NW 4 | NW 4 | — | W 12 | W 12 | SW 6 | SW 6 |
 kJ | 4 | 4 | 4 | 4 | 2 | 2 | 3 | 2 | 2 | — | — | 3 | 14 | — | — | — | — | 7 | 3 | — | 3 | 3 | 73 | 59 |
Swell 2 Height (m) Direction Period (s) | — | — | — | W 6 | NNW 5 | WNW 3 | — | — | SW 4 | W 13 | W 13 | — | — | — | W 13 | — | — | W 12 | — | — | — | W 12 | — | — |
| kJ | — | — | — | 1 | 2 | 1 | — | — | 1 | 3 | 3 | — | — | — | 3 | — | — | 3 | — | — | — | 3 | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | W 13 | W 13 | W 13 | W 13 | W 13 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | 3 | 3 | 3 | 3 | 3 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | NW 6 | NW 4 | NW 4 | NW 4 | — | W 3 | WSW 2 | — | — | SW 2 | SW 3 | SW 4 | WSW 4 | W 4 | W 4 | W 5 | WSW 5 | WSW 5 | SW 5 | SW 6 | SW 6 | SW 6 | — | — |
| kJ | 69 | 39 | 17 | 7 | — | 1 | 1 | — | — | 1 | 3 | 12 | 16 | 19 | 30 | 34 | 35 | 40 | 63 | 123 | 92 | 72 | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 420 | 298 | 298 | 283 | 283 | 283 | 283 | 283 | 283 | 280 | 287 | 283 | 285 | 283 | 283 | 162 | 285 | 285 | 280 | 280 | 269 | 269 | 20 | 20 |
Best forecast wave conditions in Lleyn Peninsula | ||||||||||||||||||||||||
Best forecast wave conditions in United Kingdom | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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