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Hells Mouth (Porth Neigwl) Surf Forecast
/ Wales – Lleyn (14 surf breaks) /
Surf Forecasts:
Hells Mouth (Porth Neigwl) surfForecast / Wales – Lleyn / UK
48hr Weather and Surf, issued 12 pm Friday 17 Apr 2026 BSTForecast update in hr min s Forecast update imminent
Hells Mouth (Porth Neigwl) surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Hells Mouth (Porth Neigwl) sea temperature is
9.8° C
(Which is 1.1°C warmer than normal for this time of year)How big are the waves at Hells Mouth (Porth Neigwl) today?
The current surf forecast for Hells Mouth (Porth Neigwl) at 4PM is: 1.8m 6s primary swell from a Southwest direction (forecast issued at 12:00pm April 17). The wind direction is predicted to be onshore.
| Time (BST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (17 Apr) | 6ft (1.8m) | 8s |
| Afternoon (17 Apr) | 6ft (1.8m) | 7s |
| Evening (17 Apr) | 6ft (1.9m) | 6s |
Table - waves today at Hells Mouth (Porth Neigwl). (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Friday 17 | Saturday 18 | Sunday 19 | Monday 20 | |||||||||||||||||||||
| 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 | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 8 | 8 | 6 | 6 | 6 | 6 | 7 | 7 | 6 | 6 | 10 | 10 | 10 | 10 | 10 | 10 | 6 | 6 | 6 | 6 | 16 | 6 | 6 | 6 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 385 | 383 | 228 | 275 | 293 | 263 | 205 | 175 | 91 | 59 | 38 | 98 | 64 | 47 | 46 | 33 | 10 | 6 | 6 | 6 | 5 | 4 | 4 | 4 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- on | on | on | on | on | on | cross- on | cross- on | cross | cross | cross | cross- on | cross | cross- off | cross- off | off | off | cross- off | cross- off | cross- off | off | off | cross- off | cross- off |
High Tide / height (m) | 8:45AM 4.72 | 9:07PM 4.60 | 9:26AM 4.86 | 9:47PM 4.72 | 10:08AM 4.84 | 10:28PM 4.71 | ||||||||||||||||||
Low Tide / height (m) | 3:53PM 0.03 | 4:07AM 0.17 | 4:32PM 0.05 | 4:49AM 0.13 | 5:13PM 0.19 | 5:33AM 0.21 | ||||||||||||||||||
Friday 17 | Saturday 18 | Sunday 19 | Monday 20 | |||||||||||||||||||||
| Sunrise | - | - | - | - | - | - | - | 6:13 | - | - | - | - | - | - | - | 6:11 | - | - | - | - | - | - | - | 6:09 |
| Sunset | - | - | - | 8:20 | - | - | - | - | - | - | - | 8:22 | - | - | - | - | - | - | - | 8:22 | - | - | - | - |
 |  |  | |  | | | | | |  | | | | | | | | | | | | | | |
Rain (mm) | 2 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 10 | 11 | 10 | 10 | 10 | 9 | 8 | 9 | 8 | 9 | 10 | 10 | 10 | 9 | 9 | 8 | 8 | 9 | 9 | 10 | 9 | 8 | 8 | 8 |
| Feels °C (?) | 4 | 4 | 2 | 2 | 2 | 2 | 1 | 2 | 3 | 3 | 6 | 6 | 6 | 6 | 6 | 5 | 5 | 5 | 4 | 4 | 4 | 4 | 4 | 4 |
- 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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