Surf Forecasts:
How big are the waves at Hells Mouth (Porth Neigwl) today (20 Aug):
- Morning surf: Morning surf (20 Aug, local time) - 2.5ft (0.7m), 6s period with SW swell.
- Afternoon surf: Afternoon surf (20 Aug, local time) - 1.5ft (0.5m), 6s period with SW swell.
- Evening surf: Evening surf (20 Aug, local time) - 1.5ft (0.4m), 6s period with SW swell.
The current surf forecast for Hells Mouth (Porth Neigwl) at 10AM is: 0.7m 6s primary swell from a Southwest direction and 0.1m 15s secondary swell from a Southwest direction (forecast issued at 06:00am August 20). An open ocean swell of 0.9m 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 (20 Aug) | 2.5ft (0.7m) | 6s |
| Afternoon (20 Aug) | 1.5ft (0.5m) | 6s |
| Evening (20 Aug) | 1.5ft (0.4m) | 6s |
Table - waves today at Hells Mouth (Porth Neigwl). (Swell directed towards the surf break)
Short Range ForecastLight rain (total 4mm), mostly falling on Thu morning. Very mild (max 16°C on Fri afternoon, min 13°C on Thu night). Winds decreasing (fresh winds from the N on Thu afternoon, light winds from the NE by Sat night). | |||||||||||||||||||||||
Thursday 20 | Friday 21 | Saturday 22 | |||||||||||||||||||||
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 | |
Swell Height Map |  |  |  |  |  |  |  |  |  | ||||||||||||||
Wave Height (m) Direction Period (s) | WSW 7 | SW 6 | SW 6 | WSW 6 | SW 6 | SW 6 | SW 6 | SW 6 | SW 14 | SW 14 | NW 5 | NW 5 | NW 5 | W 16 | W 16 | W 16 | W 16 | SW 16 | SW 15 | SW 15 | SW 15 | SW 15 | SW 15 |
Wave Graph  | |||||||||||||||||||||||
 kJ | 78 | 56 | 43 | 27 | 20 | 10 | 10 | 8 | 8 | 7 | 29 | 23 | 13 | 7 | 7 | 7 | 7 | 10 | 9 | 8 | 9 | 8 | 8 |
Wind (km/h) | |||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross | cross | off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off |
High Tide | 2:05PM3.11m | 2:38AM2.96m | 3:15PM2.85m | 4:06AM2.73m | 4:55PM2.79m | ||||||||||||||||||
Low Tide | 8:25AM1.34m | 8:46PM1.43m | 9:17AM1.59m | 10:04PM1.63m | 10:53AM1.71m | ||||||||||||||||||
 |  | | |  |  |  |  | | | | | | | | | | | | | | | | |
 | 6:07 | — | — | — | — | — | — | — | 6:07 | — | — | — | — | — | — | — | 6:09 | — | — | — | — | — | — |
 | — | — | — | — | — | 8:35 | — | — | — | — | — | — | — | 8:32 | — | — | — | — | — | — | — | 8:30 | — |
mm | 2 | 2 | 2 | 1 | — | — | — | — | — | — | — | — | — | 1 | — | — | — | — | — | — | — | — | — |
Temp °C | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 14 | 13 | 13 | 13 | 14 | 15 | 16 | 15 | 14 | 13 | 13 | 13 | 14 | 14 | 14 | 16 |
Feels °C | 12 | 11 | 10 | 9 | 8 | 9 | 10 | 9 | 8 | 9 | 9 | 11 | 13 | 11 | 11 | 10 | 10 | 9 | 10 | 10 | 10 | 11 | 13 |
Swell 1 Height (m) Direction Period (s) | WSW 7 | SW 6 | SW 6 | WSW 6 | SW 6 | SW 6 | SW 6 | SW 6 | WSW 6 | WSW 6 | NW 5 | NW 5 | WSW 6 | SW 6 | SW 6 | SW 6 | SW 13 | SW 13 | SW 15 | SW 15 | SW 15 | SW 15 | SW 15 |
| kJ | 78 | 56 | 43 | 27 | 20 | 10 | 10 | 6 | 4 | 4 | 29 | 23 | 3 | 1 | 1 | 1 | 7 | 6 | 9 | 8 | 9 | 8 | 8 |
Swell 2 Height (m) Direction Period (s) | SW 15 | SW 15 | SW 15 | SW 14 | SW 14 | SW 14 | SW 14 | SW 14 | W 8 | SW 14 | WSW 6 | WSW 6 | SW 13 | SW 13 | SW 13 | SW 13 | W 6 | SW 16 | W 6 | — | SW 12 | W 12 | W 12 |
| kJ | 9 | 9 | 8 | 8 | 8 | 8 | 8 | 8 | 1 | 7 | 4 | 4 | 7 | 7 | 7 | 7 | 1 | 10 | 1 | — | 6 | 3 | 3 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | W 14 | W 14 | SW 14 | — | SW 13 | SW 13 | W 16 | W 16 | W 16 | W 16 | W 16 | W 6 | W 10 | W 10 | — | W 10 | W 12 |
| kJ | — | — | — | — | — | — | 4 | 4 | 8 | — | 7 | 7 | 5 | 5 | 5 | 5 | 5 | 1 | 2 | 2 | — | 2 | 3 |
Wind waves Height (m) Direction Period (s) | NW 4 | NW 4 | NW 4 | NW 5 | NNW 5 | NNW 5 | NNW 5 | NNW 4 | NNW 5 | NW 5 | — | — | NW 5 | NNW 4 | N 4 | NNW 4 | NNW 5 | NNW 5 | NNW 5 | NNW 5 | NNW 5 | NNW 5 | NNW 5 |
| kJ | 7 | 12 | 34 | 43 | 74 | 55 | 30 | 28 | 36 | 35 | — | — | 13 | 11 | 10 | 10 | 13 | 14 | 10 | 9 | 9 | 9 | 5 |
Nearest Offshore or Glassy | |||||||||||||||||||||||
Distance (km) | 286 | 5 | 5 | 45 | 320 | 144 | 789 | 320 | 142 | 141 | 141 | 141 | 141 | 145 | 305 | 186 | 304 | 134 | 197 | 136 | 128 | 134 | 250 |
Best forecast wave conditions in Lleyn Peninsula | |||||||||||||||||||||||
Best forecast wave conditions in United Kingdom | |||||||||||||||||||||||
Header Global | |||||||||||||||||||||||
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