Surf Forecasts:
How big are the waves at Harlech today (20 Aug):
- Morning surf: Morning surf (20 Aug, local time) - 2.5ft (0.7m), 6s period with WSW swell.
- Afternoon surf: Afternoon surf (20 Aug, local time) - 2.5ft (0.8m), 5s period with NNW swell.
- Evening surf: Evening surf (20 Aug, local time) - 2ft (0.6m), 4s period with NNW swell.
The current surf forecast for Harlech at 7PM is: 0.7m 4s primary swell from a North-northwest direction and 0.4m 6s secondary swell from a Southwest direction, 0.1m 14s secondary swell from a West direction (forecast issued at 12:00pm August 20). The wind direction is predicted to be cross-shore.
| Time (BST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (20 Aug) | 2.5ft (0.7m) | 6s |
| Afternoon (20 Aug) | 2.5ft (0.8m) | 5s |
| Evening (20 Aug) | 2ft (0.6m) | 4s |
Table - waves today at Harlech. (Swell directed towards the surf break)
Short Range ForecastLight rain (total 8mm), mostly falling on Thu afternoon. Very mild (max 17°C on Thu morning, min 11°C on Thu night). Wind will be generally light. | |||||||||||||||||||||
Thu 20 | Friday 21 | Saturday 22 | |||||||||||||||||||
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 6 | NW 4 | NNW 5 | NNW 4 | NW 4 | NW 4 | NW 4 | NW 4 | WNW 4 | WNW 4 | NW 4 | NW 4 | NNW 4 | NNW 4 | W 13 | W 16 | W 15 | W 15 | W 15 | NW 4 | W 15 |
Wave Graph  | |||||||||||||||||||||
 kJ | 27 | 20 | 28 | 18 | 9 | 8 | 9 | 7 | 8 | 6 | 3 | 6 | 6 | 7 | 3 | 5 | 4 | 4 | 6 | 5 | 4 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross | cross | cross | cross | cross | cross-off | glassy | glassy | cross | cross | cross-off | cross-off | cross-off | cross-off | cross | cross-on | cross-on | cross-on | cross-off |
High Tide | 1:55PM3.11m | 2:28AM2.96m | 3:05PM2.85m | 3:58AM2.73m | 4:48PM2.79m | ||||||||||||||||
Low Tide | 8:11AM1.37m | 8:32PM1.46m | 9:04AM1.62m | 9:50PM1.66m | 10:38AM1.74m | ||||||||||||||||
 | | |  |  | |  |  | | | |  | | | | | | | | | | |
 | 6:05 | — | — | — | — | — | 6:07 | — | — | — | — | — | — | — | 6:07 | — | — | — | — | — | — |
 | — | — | — | 8:32 | — | — | — | — | — | — | — | 8:30 | — | — | — | — | — | — | — | 8:29 | — |
mm | 1 | 1 | 2 | — | — | — | — | — | 1 | 1 | 1 | 1 | — | — | — | — | — | — | — | — | — |
Temp °C | 16 | 17 | 15 | 15 | 13 | 12 | 11 | 11 | 14 | 16 | 17 | 16 | 12 | 11 | 11 | 11 | 14 | 16 | 16 | 16 | 13 |
Feels °C | 14 | 14 | 11 | 12 | 11 | 10 | 9 | 10 | 13 | 15 | 15 | 13 | 9 | 9 | 9 | 9 | 12 | 13 | 13 | 13 | 11 |
Swell 1 Height (m) Direction Period (s) | WSW 6 | WSW 6 | WSW 6 | SW 6 | WSW 6 | WSW 6 | WSW 6 | WSW 6 | WNW 4 | WNW 4 | NW 4 | SW 6 | W 6 | W 6 | NW 5 | NW 5 | NW 4 | W 15 | W 15 | W 15 | W 15 |
| kJ | 27 | 16 | 16 | 10 | 8 | 4 | 4 | 4 | 8 | 6 | 3 | 1 | 1 | 1 | 6 | 4 | 2 | 4 | 4 | 4 | 4 |
Swell 2 Height (m) Direction Period (s) | W 15 | W 14 | W 14 | W 14 | W 14 | W 14 | W 14 | W 14 | SW 6 | NNW 5 | W 4 | W 13 | W 13 | W 13 | W 13 | W 13 | W 15 | — | W 10 | W 12 | W 12 |
| kJ | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 1 | 2 | 1 | 3 | 3 | 3 | 3 | 3 | 4 | — | 2 | 3 | 3 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | W 14 | W 14 | — | — | W 14 | SW 6 | SW 6 | W 8 | — | — | W 6 | W 16 | — | — | — | — | — |
| kJ | — | — | — | — | 4 | 4 | — | — | 4 | 1 | 1 | 1 | — | — | 1 | 5 | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | NW 4 | NW 4 | NNW 5 | NNW 4 | NW 4 | NW 4 | NW 4 | NW 4 | — | — | — | NW 4 | NNW 4 | NNW 4 | — | — | — | NW 5 | NW 3 | NW 4 | NW 3 |
| kJ | 6 | 20 | 28 | 18 | 9 | 8 | 9 | 7 | — | — | — | 6 | 6 | 7 | — | — | — | 3 | 6 | 5 | 2 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 299 | 509 | 782 | 227 | 140 | 140 | 131 | 140 | 143 | 143 | 281 | 138 | 138 | 145 | 138 | 145 | 147 | 215 | 258 | 295 | 215 |
Best forecast wave conditions in Mid Wales | |||||||||||||||||||||
Best forecast wave conditions in United Kingdom | |||||||||||||||||||||
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