Surf Forecasts:
How big are the waves at Harlech today (20 Aug):
- Morning surf: Morning surf (20 Aug, local time) - 2.5ft (0.7m), 5s period with WSW swell.
- Afternoon surf: Afternoon surf (20 Aug, local time) - 2.5ft (0.7m), 5s period with NW swell.
- Evening surf: Evening surf (20 Aug, local time) - 2ft (0.6m), 4s period with NNW swell.
The current surf forecast for Harlech at 1AM is: 0.9m 6s primary swell from a West-southwest direction and 0.1m 16s secondary swell from a West direction (forecast issued at 06:00pm August 19). The wind direction is predicted to be onshore.
| Time (BST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (20 Aug) | 2.5ft (0.7m) | 5s |
| Afternoon (20 Aug) | 2.5ft (0.7m) | 5s |
| Evening (20 Aug) | 2ft (0.6m) | 4s |
Table - waves today at Harlech. (Swell directed towards the surf break)
Short Range ForecastModerate rain (total 13mm), heaviest on Wed afternoon. Very mild (max 17°C on Thu morning, min 11°C on Fri night). Wind will be generally light. | |||||||||||||||||||
Wed 19 | Thursday 20 | Friday 21 | |||||||||||||||||
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 4 | SW 5 | WSW 5 | WSW 6 | WSW 7 | WSW 5 | WSW 5 | NW 5 | NW 5 | NW 5 | NW 4 | NW 4 | NW 4 | NW 4 | NW 4 | WNW 4 | NW 4 | NW 4 | NNW 4 |
Wave Graph  | |||||||||||||||||||
 kJ | 13 | 47 | 36 | 57 | 62 | 27 | 19 | 38 | 24 | 22 | 9 | 6 | 9 | 9 | 6 | 7 | 4 | 8 | 7 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-on | on | on | on | cross-on | cross-off | cross | cross | cross | cross | cross | cross | cross-on | cross-on | glassy | cross-off | cross-off |
High Tide | 1:08PM3.43m | 1:31AM3.34m | 1:55PM3.11m | 2:28AM2.96m | 3:05PM2.85m | ||||||||||||||
Low Tide | 7:44PM1.19m | 8:11AM1.37m | 8:32PM1.46m | 9:04AM1.62m | 9:50PM1.66m | ||||||||||||||
 |  |  | | | | | | |  |  | | |  | | | | |  | |
 | — | — | — | — | 6:05 | — | — | — | — | — | — | — | 6:07 | — | — | — | — | — | — |
 | — | 8:35 | — | — | — | — | — | — | — | 8:32 | — | — | — | — | — | — | — | 8:30 | — |
mm | — | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | — | — | — | — | — | — | 1 | 2 | 1 | — |
Temp °C | 16 | 16 | 16 | 15 | 14 | 14 | 15 | 17 | 17 | 16 | 14 | 12 | 12 | 13 | 14 | 15 | 16 | 16 | 12 |
Feels °C | 12 | 13 | 15 | 13 | 13 | 14 | 14 | 15 | 14 | 12 | 12 | 9 | 10 | 11 | 12 | 14 | 15 | 14 | 9 |
Swell 1 Height (m) Direction Period (s) | — | — | W 16 | W 16 | NNW 4 | WSW 5 | WSW 5 | WSW 7 | WSW 6 | SW 6 | WSW 6 | WSW 6 | WSW 6 | SW 6 | SW 6 | SW 6 | SW 6 | SW 6 | W 6 |
| kJ | — | — | 5 | 5 | 1 | 27 | 19 | 25 | 16 | 10 | 4 | 4 | 4 | 1 | 1 | 1 | 1 | 1 | 1 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | W 16 | W 15 | W 15 | W 14 | W 14 | W 14 | W 14 | W 14 | W 14 | W 14 | W 14 | W 13 | W 13 | W 13 | W 13 |
| kJ | — | — | — | — | 5 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 3 | 3 | 3 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | W 14 | W 14 | — | — | — | — | W 13 | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | 4 | 4 | — | — | — | — | 3 | — | — |
Wind waves Height (m) Direction Period (s) | WSW 4 | SW 5 | WSW 5 | WSW 6 | WSW 7 | — | WNW 4 | NW 5 | NW 5 | NW 5 | NW 4 | NW 4 | NW 4 | NW 4 | NW 4 | WNW 4 | NW 4 | NW 4 | NNW 4 |
| kJ | 13 | 47 | 36 | 57 | 62 | — | 12 | 38 | 24 | 22 | 9 | 6 | 9 | 9 | 6 | 7 | 4 | 8 | 7 |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 292 | 167 | 292 | 462 | 26 | 49 | 131 | 0 | 501 | 140 | 140 | 140 | 140 | 140 | 143 | 281 | 299 | 138 | 281 |
Best forecast wave conditions in Mid Wales | |||||||||||||||||||
Best forecast wave conditions in United Kingdom | |||||||||||||||||||
Header Global | |||||||||||||||||||
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