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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 Sunday 31 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
14.7° C
(Which is 3.1°C warmer than normal for this time of year)How big are the waves at Trefor today (31 May):
- Morning surf: Morning surf (31 May, local time) - 1.5ft (0.4m), 12s period with SW swell.
- Afternoon surf: Afternoon surf (31 May, local time) - 2ft (0.6m), 12s period with WSW swell.
- Evening surf: Evening surf (31 May, local time) - 1.5ft (0.4m), 11s period with SW swell.
The current surf forecast for Trefor at 8PM is: 0.4m 11s primary swell from a Southwest direction (forecast issued at 12:00pm May 31). An open ocean swell of 0.7m 4s is not directed at the surf break. The wind direction is predicted to be cross-offshore.
| Time (BST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (31 May) | 1.5ft (0.4m) | 12s |
| Afternoon (31 May) | 2ft (0.6m) | 12s |
| Evening (31 May) | 1.5ft (0.4m) | 11s |
Table - waves today at Trefor. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastHeavy rain (total 21mm), heaviest during Mon afternoon. Very mild (max 15°C on Tue afternoon, min 12°C on Tue night). Winds increasing (calm on Mon night, fresh winds from the S by Tue night). | ||||||||||||||||||||||||
Sun 31 | Monday 1 | Tuesday 2 | Wed 3 | |||||||||||||||||||||
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 |    |    |    |    | ||||||||||||||||||||
SW 12 | WSW 12 | SW 12 | SW 11 | SW 11 | WSW 11 | WSW 11 | WSW 11 | WSW 11 | WSW 11 | WSW 10 | SW 14 | SW 14 | SW 14 | SW 6 | SW 6 | SW 6 | SW 6 | SW 6 | SW 6 | SW 9 | SW 9 | SW 8 | NW 4 | |
36 | 90 | 35 | 33 | 33 | 25 | 24 | 12 | 12 | 11 | 11 | 8 | 8 | 8 | 44 | 32 | 29 | 23 | 23 | 38 | 65 | 115 | 118 | 1 | |
Wind (km/h) | ||||||||||||||||||||||||
cross | cross | cross-off | cross-off | off | off | off | off | off | off | off | off | cross-off | cross-off | glassy | cross-on | cross-on | cross-on | cross | cross-off | cross | cross-off | cross-off | cross-off | |
High Tide | 9:21AM3.36m | 9:38PM3.51m | 9:58AM3.34m | 10:13PM3.51m | 10:33AM3.28m | 10:49PM3.47m | ||||||||||||||||||
Low Tide | 4:20PM0.62m | 4:43AM0.53m | 4:55PM0.65m | 5:19AM0.54m | 5:30PM0.70m | 5:58AM0.60m | ||||||||||||||||||
 |  | |  |  | |  | | | |  | |  | | | | |  | | |  | | | | |
 | 4:58 | — | — | — | — | — | 4:58 | — | — | — | — | — | — | — | 4:56 | — | — | — | — | — | — | — | 4:56 | — |
 | — | — | — | 9:30 | — | — | — | — | — | — | — | 9:31 | — | — | — | — | — | — | — | 9:32 | — | — | — | 9:35 |
1 | — | — | — | — | — | — | 1 | 5 | 5 | 6 | 1 | 2 | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 13 | 14 | 14 | 14 | 13 | 13 | 13 | 13 | 13 | 14 | 14 | 14 | 14 | 13 | 13 | 13 | 13 | 13 | 14 | 15 | 14 | 13 | 12 | 12 |
11 | 11 | 11 | 11 | 10 | 10 | 10 | 10 | 10 | 11 | 11 | 11 | 12 | 11 | 13 | 12 | 11 | 10 | 12 | 13 | 12 | 11 | 9 | 6 | |
Swell 1 Height (m) Direction Period (s) | SW 5 | SW 12 | SW 12 | SW 11 | SW 11 | WSW 11 | WSW 11 | WSW 11 | WSW 11 | WSW 11 | WSW 10 | SW 10 | SW 10 | SW 10 | SW 6 | SW 6 | SW 6 | SW 6 | WNW 3 | — | SW 9 | W 16 | WNW 4 | NW 4 |
 kJ | 19 | 35 | 35 | 33 | 33 | 25 | 24 | 12 | 12 | 11 | 11 | 4 | 4 | 4 | 44 | 32 | 29 | 23 | 1 | — | 65 | 5 | 1 | 1 |
Swell 2 Height (m) Direction Period (s) | SW 12 | WSW 12 | — | — | — | — | — | SW 14 | SW 14 | SW 14 | SW 14 | SW 14 | SW 14 | SW 14 | SW 13 | W 13 | W 13 | W 13 | SW 13 | — | — | — | — | — |
| kJ | 36 | 90 | — | — | — | — | — | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 7 | 3 | 3 | 3 | 7 | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | W 14 | W 14 | — | W 10 | SW 13 | SW 13 | SW 13 | W 13 | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | 4 | 4 | — | 2 | 7 | 7 | 7 | 3 | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | SW 6 | SW 6 | SW 4 | SW 5 | SW 5 | SW 5 | SSW 5 | SSW 5 | SSW 5 | SW 6 | SW 6 | SW 6 | SW 6 | — | — | — | WNW 3 | SW 6 | SW 6 | — | SW 9 | SW 8 | SW 5 |
| kJ | — | 24 | 20 | 12 | 31 | 58 | 69 | 61 | 72 | 75 | 97 | 92 | 72 | 56 | — | — | — | 1 | 23 | 38 | — | 115 | 118 | 71 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 20 | 295 | 295 | 276 | 80 | 80 | 80 | 173 | 201 | 201 | 320 | 325 | 149 | 130 | 20 | 20 | 20 | 276 | 276 | 276 | 20 | 20 | 272 | 318 |
Best forecast wave conditions in Lleyn Peninsula | ||||||||||||||||||||||||
Best forecast wave conditions in United Kingdom | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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