Surf Forecasts:
How big are the waves at Hells Mouth (Porth Neigwl) today (18 Aug):
- Morning surf: Morning surf (18 Aug, local time) - 3ft (0.9m), 6s period with SW swell.
- Afternoon surf: Afternoon surf (18 Aug, local time) - 2.5ft (0.7m), 6s period with SW swell.
- Evening surf: Evening surf (18 Aug, local time) - 2ft (0.6m), 6s period with SW swell.
The current surf forecast for Hells Mouth (Porth Neigwl) at 7PM is: 0.6m 6s primary swell from a Southwest direction and 0.3m 4s secondary swell from a Northwest direction (forecast issued at 12:00pm August 18). The wind direction is predicted to be cross-onshore.
| Time (BST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (18 Aug) | 3ft (0.9m) | 6s |
| Afternoon (18 Aug) | 2.5ft (0.7m) | 6s |
| Evening (18 Aug) | 2ft (0.6m) | 6s |
Table - waves today at Hells Mouth (Porth Neigwl). (Swell directed towards the surf break)
Short Range ForecastModerate rain (total 15mm), heaviest on Tue night. Very mild (max 18°C on Tue afternoon, min 13°C on Thu night). Mainly fresh winds. | |||||||||||||||||||||
Tue 18 | Wednesday 19 | Thursday 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 | |
Swell Height Map |  |  |  |  |  |  |  |  | |||||||||||||
Wave Height (m) Direction Period (s) | SW 6 | SW 6 | SW 6 | SW 6 | SW 6 | WSW 5 | WSW 4 | WSW 4 | W 4 | WSW 4 | SW 4 | SW 5 | SW 6 | WSW 6 | WSW 6 | SW 7 | SW 6 | WSW 6 | SW 6 | SW 6 | SW 6 |
Wave Graph  | |||||||||||||||||||||
 kJ | 58 | 38 | 29 | 29 | 25 | 30 | 30 | 24 | 16 | 18 | 19 | 87 | 72 | 70 | 90 | 63 | 43 | 26 | 19 | 10 | 10 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | on | on | cross-on | cross-on | cross | cross | cross | cross-off | cross-off | cross-off | cross-off |
High Tide | 12:35PM3.75m | 00:56AM3.78m | 1:17PM3.43m | 1:41AM3.34m | 2:05PM3.11m | ||||||||||||||||
Low Tide | 7:18AM0.70m | 7:22PM0.88m | 7:50AM1.04m | 7:58PM1.17m | 8:25AM1.34m | 8:46PM1.43m | |||||||||||||||
 | |  | |  | |  |  | | |  |  | | | | | | | | |  | |
 | 6:03 | — | — | — | — | — | 6:05 | — | — | — | — | — | — | — | 6:07 | — | — | — | — | — | — |
 | — | — | — | 8:38 | — | — | — | — | — | — | — | 8:37 | — | — | — | — | — | — | — | 8:35 | — |
mm | — | — | — | — | 2 | 1 | 1 | 1 | 1 | 1 | — | 1 | 1 | 1 | 1 | 1 | — | 1 | — | — | — |
Temp °C | 16 | 17 | 17 | 18 | 14 | 14 | 15 | 15 | 15 | 15 | 16 | 17 | 17 | 16 | 15 | 14 | 15 | 15 | 16 | 16 | 15 |
Feels °C | 14 | 15 | 15 | 16 | 11 | 10 | 11 | 12 | 11 | 11 | 10 | 11 | 14 | 13 | 11 | 9 | 10 | 10 | 10 | 11 | 11 |
Swell 1 Height (m) Direction Period (s) | SW 6 | NW 4 | NW 4 | SW 6 | SW 6 | W 17 | W 17 | W 17 | SW 5 | W 16 | NW 4 | — | SW 16 | SW 16 | SW 15 | SW 7 | SW 6 | WSW 6 | SW 6 | SW 6 | SW 6 |
| kJ | 58 | 6 | 7 | 29 | 25 | 6 | 6 | 6 | 7 | 5 | 2 | — | 10 | 10 | 9 | 63 | 43 | 26 | 19 | 10 | 10 |
Swell 2 Height (m) Direction Period (s) | W 16 | W 16 | W 17 | NW 4 | W 17 | — | — | W 17 | W 16 | — | W 15 | — | — | — | — | SW 15 | SW 15 | SW 14 | SW 14 | SW 14 | SW 14 |
| kJ | 5 | 5 | 5 | 3 | 5 | — | — | 6 | 5 | — | 5 | — | — | — | — | 9 | 8 | 8 | 8 | 8 | 8 |
Swell 3 Height (m) Direction Period (s) | — | — | — | W 16 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | 5 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | NW 4 | SW 6 | SW 6 | — | NW 4 | WSW 5 | WSW 4 | WSW 4 | W 4 | WSW 4 | SW 4 | SW 5 | SW 6 | WSW 6 | WSW 6 | NW 4 | NW 4 | NW 5 | NNW 5 | NNW 5 | NNW 4 |
| kJ | 5 | 38 | 29 | — | 2 | 30 | 30 | 24 | 16 | 18 | 19 | 87 | 72 | 70 | 90 | 13 | 26 | 35 | 42 | 37 | 25 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 5 | 5 | 369 | 197 | 293 | 130 | 255 | 141 | 294 | 294 | 294 | 299 | 286 | 64 | 128 | 128 | 128 | 128 | 128 | 141 | 67 |
Best forecast wave conditions in Lleyn Peninsula | |||||||||||||||||||||
Best forecast wave conditions in United Kingdom | |||||||||||||||||||||
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