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Surf Forecasts:
Trefor surfForecast / Wales – Lleyn / UK
48hr Weather and Surf, issued 11 am Friday 05 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
10.4° C
(Which is normal for this time of year)How big are the waves at Trefor today?
The current surf forecast for Trefor at 5PM is: 2.5m 9s primary swell from a South-southwest direction and 1.2m 8s secondary swell from a Southwest direction (forecast issued at 11:00am December 05). The wind direction is predicted to be offshore.
| Time (GMT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (05 Dec) | 1.5ft (0.5m) | 9s |
| Afternoon (05 Dec) | 8ft (2.5m) | 8s |
| Evening (05 Dec) | 10ft (3.0m) | 9s |
Table - waves today at Trefor. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Friday 05 | Saturday 06 | Sunday 07 | Monday 08 | |||||||||||||||||||||
| 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) (?) | 9 | 6 | 8 | 9 | 9 | 10 | 10 | 11 | 12 | 10 | 8 | 8 | 7 | 10 | 10 | 10 | 10 | 7 | 7 | 9 | 10 | 11 | 11 | 7 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 48 | 361 | 923 | 1129 | 1389 | 1260 | 1138 | 1301 | 2113 | 1672 | 1008 | 848 | 661 | 810 | 500 | 204 | 257 | 169 | 351 | 562 | 627 | 698 | 1034 | 589 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | off | off | off | off | cross- off | cross- off | cross- off | cross- off | cross- off | cross | cross | cross | cross | cross- off | off | off | off | off | cross- off | cross | cross- off | cross- off | cross- off | cross- off |
High Tide / height (m) | 8:09AM 3.98 | 8:34PM 3.93 | 8:54AM 4.06 | 9:22PM 3.84 | 9:41AM 4.05 | 10:10PM 3.64 | ||||||||||||||||||
Low Tide / height (m) | 3:21PM -0.03 | 3:43AM 0.10 | 4:11PM -0.10 | 4:31AM 0.19 | 5:01PM -0.06 | 5:18AM 0.33 | ||||||||||||||||||
Friday 05 | Saturday 06 | Sunday 07 | Monday 08 | |||||||||||||||||||||
| Sunrise | 8:11 | - | - | - | - | - | - | - | 8:14 | - | - | - | - | - | - | - | 8:15 | - | - | - | - | - | - | - |
| Sunset | - | - | 4:01 | - | - | - | - | - | - | - | 4:01 | - | - | - | - | - | - | - | 4:01 | - | - | - | - | - |
 | |  |  | |  | | |  | | |  |  | |  | | |  | | |  | | | | |
Rain (mm) | - | - | 2 | 7 | 6 | 1 | 2 | 1 | 3 | 1 | 1 | 1 | - | - | - | 1 | - | 6 | 5 | 1 | - | - | 2 | 1 |
| Temp. °C | 8 | 9 | 9 | 11 | 11 | 10 | 11 | 10 | 11 | 11 | 11 | 11 | 11 | 10 | 10 | 10 | 11 | 12 | 13 | 11 | 11 | 11 | 11 | 12 |
| Feels °C (?) | 0 | -1 | -4 | 2 | 1 | 2 | 5 | 4 | 3 | 2 | 2 | 2 | 3 | 5 | 7 | 5 | 6 | 7 | 7 | 4 | 6 | 5 | 3 | 4 |
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
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