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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 11 am Saturday 21 Mar 2026 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
9.2° C
(Which is 1.4°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 6PM is: 0.1m 9s primary swell from a Southwest direction and 0.1m 13s secondary swell from a West direction (forecast issued at 11:00am March 21). The wind direction is predicted to be glassy.
| Time (GMT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (21 Mar) | 0.5ft (0.1m) | 14s |
| Afternoon (21 Mar) | 0.5ft (0.1m) | 13s |
| Evening (21 Mar) | 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
Saturday 21 | Sunday 22 | Monday 23 | Tuesday 24 | |||||||||||||||||||||
| 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 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 12 | 12 | 11 | 11 | 10 | 10 | 10 | 9 | 9 | 9 | 4 | 5 | 5 | 6 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 4 | 4 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 7 | 6 | 6 | 5 | 12 | 4 | 10 | 15 | 14 | 3 | 3 | 0 | 0 | 0 | 0 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | glass | on | cross- on | glass | cross- off | cross- off | cross- off | off | glass | glass | cross- on | cross- on | cross | cross | cross | cross | off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off |
High Tide / height (m) | 9:48AM 4.22 | 10:08PM 3.93 | 10:27AM 4.10 | 10:48PM 3.83 | 11:10AM 3.85 | 11:31PM 3.61 | ||||||||||||||||||
Low Tide / height (m) | 4:54PM -0.07 | 5:08AM 0.09 | 5:35PM 0.15 | 5:51AM 0.27 | 6:18PM 0.47 | |||||||||||||||||||
Saturday 21 | Sunday 22 | Monday 23 | Tuesday 24 | |||||||||||||||||||||
| Sunrise | 6:18 | - | - | - | - | - | - | - | 6:16 | - | - | - | - | - | - | - | 6:13 | - | - | - | - | - | - | - |
| Sunset | - | - | - | 6:31 | - | - | - | - | - | - | - | 6:34 | - | - | - | - | - | - | - | 6:35 | - | - | - | - |
 | | | |  | | |  |  | | | | | | | | |  | | |  | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 10 | 10 | 11 | 10 | 10 | 9 | 9 | 8 | 8 | 9 | 9 | 9 | 8 | 7 | 6 | 6 | 6 | 7 | 8 | 8 | 8 | 9 | 9 | 9 |
| Feels °C (?) | 9 | 7 | 8 | 7 | 7 | 5 | 6 | 5 | 6 | 7 | 6 | 6 | 3 | 2 | 2 | 2 | 3 | 3 | 3 | 3 | 2 | 2 | 1 | 0 |
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Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
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