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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 6 am Sunday 14 Sep 2025 BST
How big are the waves at Porth Dinllaen today?
The current surf forecast for Porth Dinllaen at 8AM is: 0.8m 7s primary swell from a Southwest direction and 0.4m 4s secondary swell from a Northwest direction, 0.4m 4s secondary swell from a Northwest direction (forecast issued at 06:00am September 14). The wind direction is predicted to be cross-offshore.
| Time (BST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (14 Sep) | 1.5ft (0.4m) | 4s |
| Afternoon (14 Sep) | 5.5ft (1.7m) | 6s |
| Evening (14 Sep) | 8ft (2.5m) | 8s |
Table - waves today at Porth Dinllaen. (Swell directed towards the surf break)
Sunday 14 | Monday 15 | Tuesday 16 | Wed 17 | |||||||||||||||||||||
| 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 | 10 AM | 1 PM | 4 PM | 7 PM | 10 PM | 1 AM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 7 | 7 | 7 | 5 | 6 | 7 | 8 | 9 | 9 | 10 | 10 | 9 | 8 | 7 | 7 | 7 | 7 | 7 | 6 | 6 | 6 | 5 | 6 | 6 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 89 | 64 | 26 | 47 | 223 | 466 | 823 | 1120 | 1603 | 2402 | 3426 | 2091 | 1186 | 829 | 713 | 616 | 553 | 439 | 282 | 184 | 126 | 77 | 92 | 83 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- off | cross- off | cross- off | off | cross- off | cross | cross | cross | cross | cross | cross | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross | cross |
High Tide / height (m) | 1:55PM 3.12 | 2:36AM 2.91 | 3:10PM 2.85 | 4:11AM 2.64 | 4:52PM 2.79 | |||||||||||||||||||
Low Tide / height (m) | 8:47AM 0.94 | 9:23PM 0.93 | 10:03AM 1.21 | 10:53PM 1.06 | 11:36AM 1.26 | 12:26AM 0.94 | ||||||||||||||||||
Sunday 14 | Monday 15 | Tuesday 16 | Wed 17 | |||||||||||||||||||||
| Sunrise | - | 6:48 | - | - | - | - | - | - | - | 6:50 | - | - | - | - | - | - | - | 6:52 | - | - | - | - | - | - |
| Sunset | - | - | - | - | - | 7:37 | - | - | - | - | - | - | - | 7:35 | - | - | - | - | - | - | - | 7:31 | - | - |
 |  | |  | |  |  |  |  | | | | | |  |  | |  | | | | | | | |
Rain (mm) | - | - | - | 3 | 4 | 2 | 1 | 1 | 1 | - | - | 1 | 1 | 1 | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 14 | 14 | 14 | 14 | 16 | 17 | 15 | 15 | 14 | 14 | 14 | 14 | 15 | 15 | 14 | 14 | 14 | 13 | 13 | 14 | 15 | 16 | 15 | 15 |
| Feels °C (?) | 11 | 10 | 7 | 5 | 8 | 9 | 6 | 5 | 3 | 3 | 2 | 2 | 4 | 4 | 4 | 3 | 4 | 4 | 6 | 7 | 9 | 11 | 11 | 10 |
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Live Wave Height (m)
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Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
Recent Eyeball Surf Reports for Wales - Lleyn
Onshore wind has changed to cross-on at Hells Mouth (Porth Neigwl) (moderate winds from the S at Aberdaron 11 km from Hells Mouth (Porth Neigwl)). 0.7m 7s swell from the SW with a 0.4m 4s local chop from the NW and a 0.2m 6s windswell from the WNW. 3 swells combining to make bigger set waves.
21 km away, 54 min ago
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