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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 Monday 25 May 2026 BSTForecast 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
12.4° C
(Which is 1.1°C warmer than normal for this time of year)How big are the waves at Porth Dinllaen today?
The current surf forecast for Porth Dinllaen at 1PM is: 0.2m 7s primary swell from a West-southwest direction and 0.1m 13s secondary swell from a West direction (forecast issued at 06:00am May 25). The wind direction is predicted to be glassy.
| Time (BST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (25 May) | 0.5ft (0.2m) | 8s |
| Afternoon (25 May) | 0.5ft (0.2m) | 7s |
| Evening (25 May) | 0.5ft (0.1m) | 13s |
Table - waves today at Porth Dinllaen. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastLight rain (total 3mm), mostly falling on Wed night. Warm (max 24°C on Mon afternoon, min 17°C on Wed night). Wind will be generally light. | ||||||||||||||||||||||||
Monday 25 | Tuesday 26 | Wednesday 27 | Thu 28 | |||||||||||||||||||||
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 | |
Swell Height Map |    |    |    |    | ||||||||||||||||||||
SW 8 | SW 8 | WSW 8 | WSW 7 | WSW 7 | W 13 | W 13 | W 12 | W 12 | W 12 | W 12 | W 12 | W 12 | NNW 4 | N 4 | SW 7 | SW 7 | W 7 | W 7 | W 7 | W 7 | ESE 3 | W 18 | W 18 | |
10 | 9 | 6 | 5 | 5 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 4 | 7 | 2 | 2 | 1 | 1 | 1 | 1 | 0 | 6 | 6 | |
Wind (km/h) | ||||||||||||||||||||||||
off | off | glassy | glassy | glassy | glassy | glassy | glassy | glassy | glassy | cross-on | on | cross-on | cross-on | cross-on | cross | cross-off | off | glassy | glassy | glassy | off | cross-off | off | |
High Tide | 4:40AM3.11m | 5:34PM2.76m | 5:45AM3.13m | 6:27PM2.90m | 6:38AM3.18m | 7:10PM3.07m | ||||||||||||||||||
Low Tide | 11:54AM0.69m | 00:13AM1.01m | 12:54PM0.66m | 1:14AM0.91m | 1:45PM0.63m | |||||||||||||||||||
 |  | | | | | | | | | | | | | | | | | | | | | | | |
 | 5:07 | — | — | — | — | — | — | — | 5:05 | — | — | — | — | — | — | — | 5:03 | — | — | — | — | — | — | 5:03 |
 | — | — | — | — | — | 9:23 | — | — | — | — | — | — | — | 9:24 | — | — | — | — | — | — | — | 9:25 | — | 9:28 |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 21 | 21 | 22 | 23 | 24 | 24 | 24 | 23 | 22 | 21 | 21 | 22 | 23 | 22 | 22 | 21 | 21 | 19 | 18 | 18 | 19 | 21 | 21 | 19 |
19 | 21 | 23 | 24 | 24 | 25 | 25 | 24 | 23 | 22 | 22 | 22 | 22 | 20 | 20 | 20 | 21 | 19 | 19 | 19 | 20 | 22 | 20 | 18 | |
Swell 1 Height (m) Direction Period (s) | SW 8 | SW 8 | WSW 8 | WSW 7 | WSW 7 | SW 7 | SW 7 | SW 7 | SW 7 | SW 7 | SW 7 | SW 7 | SW 7 | SW 7 | SW 7 | NNW 4 | NNW 5 | NNW 5 | NNW 5 | NW 4 | NW 4 | — | W 18 | W 18 |
 kJ | 10 | 9 | 6 | 5 | 5 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 4 | 4 | 2 | 2 | 1 | 1 | — | 6 | 6 |
Swell 2 Height (m) Direction Period (s) | — | SW 13 | W 13 | W 13 | W 13 | W 13 | W 13 | W 12 | W 12 | W 12 | W 12 | W 12 | W 12 | W 12 | W 12 | SW 7 | SW 7 | W 7 | — | — | — | — | — | — |
| kJ | — | 7 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 2 | 2 | 1 | — | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | W 13 | — | — | — | — | — | — | — | — | — | — | — | — | — | W 12 | — | — | — | W 7 | W 7 | W 7 | — | — | — |
| kJ | 3 | — | — | — | — | — | — | — | — | — | — | — | — | — | 3 | — | — | — | 1 | 1 | 1 | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | NNW 3 | NNW 4 | N 4 | ENE 2 | — | — | ESE 3 | ESE 3 | ESE 3 | ESE 3 | SE 3 | SE 3 |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | 2 | 4 | 7 | 1 | — | — | 3 | 2 | 1 | 1 | 2 | 4 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 127 | 127 | 153 | 186 | 127 | 127 | 127 | 127 | 145 | 127 | 148 | 148 | 141 | 141 | 141 | 141 | 127 | 127 | 151 | 215 | 198 | 151 | 203 | 203 |
Best forecast wave conditions in Lleyn Peninsula | ||||||||||||||||||||||||
Best forecast wave conditions in United Kingdom | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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