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Porth Nefyn Surf Forecast
/ Wales – Lleyn (14 surf breaks) /
Surf Forecasts:
Porth Nefyn surfForecast / Wales – Lleyn / UK
48hr Weather and Surf, issued 11 am Wednesday 03 Dec 2025 GMTForecast update in hr min s Forecast update imminent
Porth Nefyn surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Porth Nefyn sea temperature is
10.8° C
(Which is normal for this time of year)How big are the waves at Porth Nefyn today?
The current surf forecast for Porth Nefyn at 2PM is: 0.2m 14s primary swell from a West-southwest direction (forecast issued at 11:00am December 03). An open ocean swell of 1.4m 5s is not directed at the surf break. The wind direction is predicted to be cross-offshore.
| Time (GMT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (03 Dec) | 1ft (0.3m) | 14s |
| Afternoon (03 Dec) | 0.5ft (0.2m) | 13s |
| Evening (03 Dec) | 2ft (0.6m) | 9s |
Table - waves today at Porth Nefyn. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Wednesday 03 | Thursday 04 | Friday 05 | Saturday 06 | |||||||||||||||||||||
| 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) (?) | 14 | 14 | 13 | 9 | 9 | 7 | 8 | 8 | 6 | 6 | 5 | 8 | 8 | 8 | 8 | 8 | 9 | 6 | 8 | 10 | 9 | 8 | 8 | 9 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 37 | 19 | 17 | 49 | 50 | 155 | 428 | 469 | 198 | 110 | 55 | 122 | 103 | 95 | 95 | 34 | 29 | 352 | 865 | 1260 | 835 | 605 | 805 | 1230 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- off | cross- off | cross- off | off | off | off | cross- off | cross | cross | cross | cross | cross | cross | cross- off | cross- off | off | off | off | off | cross- off | cross- off | cross- off | cross- off | cross- off |
High Tide / height (m) | 6:35AM 3.57 | 6:55PM 3.80 | 7:22AM 3.82 | 7:44PM 3.93 | 8:07AM 3.99 | 8:32PM 3.95 | ||||||||||||||||||
Low Tide / height (m) | 1:37PM 0.38 | 2:04AM 0.15 | 2:29PM 0.14 | 2:53AM 0.10 | 3:19PM -0.02 | 3:41AM 0.12 | ||||||||||||||||||
Wednesday 03 | Thursday 04 | Friday 05 | Saturday 06 | |||||||||||||||||||||
| Sunrise | 8:10 | - | - | - | - | - | - | - | 8:11 | - | - | - | - | - | - | - | 8:12 | - | - | - | - | - | - | - |
| Sunset | - | - | 4:04 | - | - | - | - | - | - | - | 4:04 | - | - | - | - | - | - | - | 4:02 | - | - | - | - | - |
 | | |  | | | | |  |  | |  | | |  |  | | |  |  | | | | | |
Rain (mm) | 2 | 2 | 1 | 1 | 2 | 3 | 1 | 1 | - | - | - | - | - | - | - | - | - | - | 3 | 4 | 2 | 1 | 2 | 1 |
| Temp. °C | 10 | 10 | 10 | 10 | 9 | 9 | 10 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 11 | 11 | 10 | 11 | 11 |
| Feels °C (?) | 3 | 3 | 3 | 3 | 0 | -2 | 3 | -2 | 0 | 1 | 2 | 2 | 2 | 3 | 2 | 0 | -2 | -5 | -6 | 2 | 2 | 0 | 1 | 1 |
- 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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