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Porth Dinllaen Surf Forecast
/ Wales – Lleyn (14 surf breaks) /
Surf Forecasts:
Porth Dinllaen surfForecast / Wales – Lleyn / UK
48hr Weather and Surf, issued 5 am Friday 05 Dec 2025 GMTForecast update in hr min s Forecast update imminent
Porth Dinllaen surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Porth Dinllaen sea temperature is
10.8° C
(Which is normal for this time of year)How big are the waves at Porth Dinllaen today?
The current surf forecast for Porth Dinllaen at 8AM is: 0.6m 9s primary swell from a West-southwest direction and 0.6m 8s secondary swell from a West-southwest direction (forecast issued at 05:00am December 05). An open ocean swell of 1.1m 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 (05 Dec) | 2ft (0.6m) | 9s |
| Afternoon (05 Dec) | 5ft (1.6m) | 8s |
| Evening (05 Dec) | 10ft (3.0m) | 10s |
Table - waves today at Porth Dinllaen. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Friday 05 | Saturday 06 | Sunday 07 | Mon 08 | |||||||||||||||||||||
| 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 | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 0 AM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 9 | 8 | 9 | 6 | 8 | 10 | 10 | 10 | 10 | 11 | 12 | 16 | 8 | 8 | 7 | 7 | 10 | 10 | 10 | 10 | 6 | 7 | 7 | 10 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 37 | 102 | 56 | 339 | 322 | 1448 | 1527 | 1260 | 1201 | 1908 | 1946 | 4277 | 1554 | 1108 | 726 | 423 | 450 | 335 | 222 | 154 | 187 | 323 | 315 | 488 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross | cross- off | cross- off | cross- off | off | cross- off | cross | cross- off | cross | cross | cross | cross | cross- on | cross- on | cross- on | cross | cross- off | off | off | off | cross- off | cross- on | cross- on | cross- off |
High Tide / height (m) | 8:07AM 3.99 | 8:32PM 3.95 | 8:53AM 4.07 | 9:21PM 3.85 | 9:40AM 4.06 | 10:09PM 3.66 | ||||||||||||||||||
Low Tide / height (m) | 3:19PM -0.02 | 3:41AM 0.12 | 4:09PM -0.08 | 4:29AM 0.20 | 5:00PM -0.04 | |||||||||||||||||||
Friday 05 | Saturday 06 | Sunday 07 | Mon 08 | |||||||||||||||||||||
| Sunrise | - | - | 8:12 | - | - | - | - | - | - | - | 8:14 | - | - | - | - | - | - | - | 8:15 | - | - | - | - | - |
| Sunset | - | - | - | - | 4:02 | - | - | - | - | - | - | - | 4:02 | - | - | - | - | - | - | - | 4:01 | - | - | - |
 | |  |  | |  |  | | | | | |  | |  | | | | | |  | | |  | |
Rain (mm) | - | - | 1 | - | 2 | 5 | 3 | - | 2 | 1 | 1 | 1 | 2 | 1 | - | - | - | 1 | 1 | 3 | 6 | 2 | - | - |
| Temp. °C | 10 | 9 | 9 | 9 | 9 | 11 | 11 | 10 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 10 | 11 | 11 | 12 | 12 | 13 | 11 | 11 | 11 |
| Feels °C (?) | 4 | 3 | 0 | -3 | -6 | 1 | -1 | 1 | 2 | 3 | 2 | 1 | 1 | 2 | 3 | 4 | 7 | 6 | 6 | 5 | 5 | 4 | 3 | 5 |
- 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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