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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 12 pm Sunday 31 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
13.9° C
(Which is 2.3°C warmer than normal for this time of year)How big are the waves at Porth Dinllaen today (31 May):
- Morning surf: Morning surf (31 May, local time) - 1.5ft (0.4m), 12s period with SW swell.
- Afternoon surf: Afternoon surf (31 May, local time) - 2ft (0.6m), 12s period with WSW swell.
- Evening surf: Evening surf (31 May, local time) - 1.5ft (0.4m), 11s period with SW swell.
The current surf forecast for Porth Dinllaen at 6PM is: 0.4m 12s primary swell from a Southwest direction (forecast issued at 12:00pm May 31). An open ocean swell of 0.6m 4s is not directed at the surf break. The wind direction is predicted to be cross-offshore.
| Time (BST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (31 May) | 1.5ft (0.4m) | 12s |
| Afternoon (31 May) | 2ft (0.6m) | 12s |
| Evening (31 May) | 1.5ft (0.4m) | 11s |
Table - waves today at Porth Dinllaen. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastModerate rain (total 19mm), heaviest on Mon morning. Very mild (max 15°C on Tue afternoon, min 12°C on Tue morning). Winds increasing (light winds from the WSW on Mon night, fresh winds from the S by Tue night). | ||||||||||||||||||||||||
Sun 31 | Monday 1 | Tuesday 2 | Wed 3 | |||||||||||||||||||||
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 | 4 AM | 7 AM | |
Swell Height Map |    |    |    |    | ||||||||||||||||||||
SW 12 | WSW 12 | SW 12 | SW 11 | SW 11 | WSW 11 | WSW 11 | WSW 11 | WSW 11 | WSW 11 | WSW 10 | SW 14 | SW 14 | SW 14 | SW 6 | SW 6 | SW 6 | SW 6 | SW 6 | SW 6 | SW 9 | SW 9 | SW 8 | NW 4 | |
36 | 90 | 35 | 33 | 33 | 25 | 24 | 12 | 12 | 11 | 11 | 8 | 8 | 8 | 44 | 32 | 29 | 23 | 23 | 38 | 65 | 115 | 118 | 1 | |
Wind (km/h) | ||||||||||||||||||||||||
cross-on | cross | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-on | on | on | on | cross | cross-off | cross-on | cross | cross-off | cross-off | |
High Tide | 9:20AM3.38m | 9:36PM3.52m | 9:56AM3.36m | 10:12PM3.53m | 10:32AM3.29m | 10:47PM3.49m | ||||||||||||||||||
Low Tide | 4:18PM0.63m | 4:41AM0.54m | 4:53PM0.66m | 5:18AM0.55m | 5:28PM0.71m | 5:56AM0.61m | ||||||||||||||||||
 | | |  |  | |  |  | | | | |  | | | | |  | | |  | | | | |
 | 5:00 | — | — | — | — | — | 4:58 | — | — | — | — | — | — | — | 4:58 | — | — | — | — | — | — | — | 4:56 | — |
 | — | — | — | 9:30 | — | — | — | — | — | — | — | 9:32 | — | — | — | — | — | — | — | 9:34 | — | — | — | 9:35 |
— | — | — | — | — | — | — | 2 | 5 | 4 | 5 | 1 | 1 | — | 1 | — | — | — | — | — | — | — | — | — | |
Temp °C | 13 | 13 | 14 | 14 | 13 | 13 | 13 | 13 | 13 | 14 | 14 | 14 | 13 | 13 | 13 | 13 | 12 | 13 | 14 | 15 | 15 | 13 | 13 | 12 |
10 | 10 | 11 | 11 | 9 | 9 | 9 | 9 | 9 | 10 | 9 | 10 | 10 | 10 | 13 | 11 | 10 | 10 | 11 | 13 | 12 | 10 | 9 | 5 | |
Swell 1 Height (m) Direction Period (s) | SW 5 | SW 12 | SW 12 | SW 11 | SW 11 | WSW 11 | WSW 11 | WSW 11 | WSW 11 | WSW 11 | WSW 10 | SW 10 | SW 10 | SW 10 | SW 6 | SW 6 | SW 6 | SW 6 | WNW 3 | — | SW 9 | W 16 | WNW 4 | NW 4 |
 kJ | 19 | 35 | 35 | 33 | 33 | 25 | 24 | 12 | 12 | 11 | 11 | 4 | 4 | 4 | 44 | 32 | 29 | 23 | 1 | — | 65 | 5 | 1 | 1 |
Swell 2 Height (m) Direction Period (s) | SW 12 | WSW 12 | — | — | — | — | — | SW 14 | SW 14 | SW 14 | SW 14 | SW 14 | SW 14 | SW 14 | SW 13 | W 13 | W 13 | W 13 | SW 13 | — | — | — | — | — |
| kJ | 36 | 90 | — | — | — | — | — | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 7 | 3 | 3 | 3 | 7 | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | W 14 | W 14 | — | W 10 | SW 13 | SW 13 | SW 13 | W 13 | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | 4 | 4 | — | 2 | 7 | 7 | 7 | 3 | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | SW 6 | SW 6 | SW 4 | SW 5 | SW 5 | SW 5 | SSW 5 | SSW 5 | SSW 5 | SW 6 | SW 6 | SW 6 | SW 6 | — | — | — | WNW 3 | SW 6 | SW 6 | — | SW 9 | SW 8 | SW 5 |
| kJ | — | 24 | 20 | 12 | 31 | 58 | 69 | 61 | 72 | 75 | 97 | 92 | 72 | 56 | — | — | — | 1 | 23 | 38 | — | 115 | 118 | 71 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 13 | 288 | 288 | 268 | 76 | 76 | 76 | 169 | 197 | 197 | 320 | 326 | 142 | 120 | 13 | 13 | 13 | 265 | 265 | 265 | 13 | 13 | 268 | 313 |
Best forecast wave conditions in Lleyn Peninsula | ||||||||||||||||||||||||
Best forecast wave conditions in United Kingdom | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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Live Wind Speed (km/h)
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