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Surf Forecasts:
Trefor surfForecast / Wales – Lleyn / UK
48hr Weather and Surf, issued 11 am Friday 12 Dec 2025 GMTForecast 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
10.6° C
(Which is normal for this time of year)How big are the waves at Trefor today?
The current surf forecast for Trefor at 6PM is: 1.4m 18s primary swell from a Southwest direction (forecast issued at 11:00am December 12). The wind direction is predicted to be cross-offshore.
| Time (GMT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (12 Dec) | 3.5ft (1.1m) | 13s |
| Afternoon (12 Dec) | 4ft (1.2m) | 13s |
| Evening (12 Dec) | 4.5ft (1.4m) | 18s |
Table - waves today at Trefor. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Friday 12 | Saturday 13 | Sunday 14 | Monday 15 | |||||||||||||||||||||
| 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 0 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 0 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 0 AM | 3 AM | 6 AM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 13 | 13 | 13 | 18 | 18 | 18 | 10 | 17 | 16 | 6 | 7 | 8 | 8 | 8 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 10 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 458 | 400 | 494 | 1228 | 1175 | 123 | 286 | 109 | 48 | 0 | 462 | 694 | 881 | 1003 | 1129 | 1215 | 1215 | 1215 | 1243 | 1182 | 1070 | 1134 | 1302 | 1419 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | off | off | off | off | off |
High Tide / height (m) | 2:23PM 3.06 | 3:18AM 2.60 | 3:35PM 2.94 | 4:26AM 2.66 | 4:40PM 2.91 | 5:20AM 2.79 | ||||||||||||||||||
Low Tide / height (m) | 8:48AM 1.08 | 9:40PM 0.83 | 9:54AM 1.18 | 10:43PM 0.92 | 11:04AM 1.19 | 11:44PM 0.93 | ||||||||||||||||||
Friday 12 | Saturday 13 | Sunday 14 | Monday 15 | |||||||||||||||||||||
| Sunrise | 8:21 | - | - | - | - | - | - | - | 8:22 | - | - | - | - | - | - | - | 8:22 | - | - | - | - | - | - | - |
| Sunset | - | - | 4:00 | - | - | - | - | - | - | - | 4:00 | - | - | - | - | - | - | - | 4:00 | - | - | - | - | - |
 |  | |  |  | | | | | | |  | | |  | | |  | | | | | |  | |
Rain (mm) | - | - | - | - | 1 | - | - | - | - | - | - | - | - | - | 1 | - | - | 1 | 2 | 3 | 4 | 3 | 5 | 7 |
| Temp. °C | 9 | 10 | 10 | 10 | 10 | 10 | 9 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 11 | 11 | 11 |
| Feels °C (?) | 6 | 6 | 5 | 5 | 5 | 7 | 5 | 5 | 4 | 2 | 2 | 1 | 0 | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 1 | 2 | 2 | 2 |
- Map Icons:
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Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
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