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 (0.8m), 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 11AM is: 0.6m 6s primary swell from a West-southwest direction and 0.1m 15s secondary swell from a West direction, 0.6m 4s secondary swell from a Northwest direction (forecast issued at 06:00am August 20). The wind direction is predicted to be cross-onshore.
| Time (BST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (20 Aug) | 2.5ft (0.7m) | 5s |
| 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 ForecastModerate rain (total 10mm), heaviest on Fri afternoon. Very mild (max 17°C on Thu morning, min 11°C on Thu night). Wind will be generally light. | |||||||||||||||||||||||
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 | WSW 5 | WSW 5 | NW 5 | NNW 5 | NNW 4 | NW 4 | NW 4 | NW 4 | NW 4 | NW 5 | WNW 5 | W 13 | NW 4 | NNW 4 | NW 4 | W 13 | W 16 | W 15 | W 15 | W 15 | W 15 | W 15 |
Wave Graph  | |||||||||||||||||||||||
 kJ | 64 | 22 | 19 | 17 | 31 | 18 | 9 | 8 | 9 | 7 | 10 | 8 | 4 | 5 | 6 | 4 | 3 | 5 | 4 | 4 | 4 | 4 | 4 |
Wind (km/h) | |||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | cross-on | cross-on | cross-on | cross | cross | cross | cross | cross | cross | cross-on | cross-on | glassy | cross-off | cross-off | cross-off | cross-off | cross-off | cross-on | 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 | 1 | 1 | 2 | — | — | — | — | — | — | 1 | 3 | 2 | — | — | — | — | — | — | — | — | — |
Temp °C | 14 | 14 | 15 | 17 | 16 | 16 | 13 | 12 | 11 | 12 | 14 | 15 | 16 | 15 | 13 | 11 | 11 | 11 | 13 | 16 | 16 | 16 | 14 |
Feels °C | 13 | 13 | 13 | 15 | 13 | 13 | 10 | 10 | 9 | 11 | 12 | 14 | 15 | 13 | 10 | 9 | 9 | 9 | 12 | 13 | 13 | 14 | 12 |
Swell 1 Height (m) Direction Period (s) | W 16 | WSW 5 | WSW 5 | WSW 6 | SW 6 | SW 6 | WSW 6 | WSW 6 | WSW 6 | WSW 6 | NW 5 | WNW 5 | WNW 4 | W 4 | SW 6 | W 6 | NW 5 | NW 5 | W 15 | W 15 | W 15 | W 15 | — |
| kJ | 5 | 22 | 19 | 16 | 10 | 10 | 4 | 4 | 4 | 4 | 10 | 8 | 4 | 1 | 1 | 1 | 5 | 3 | 4 | 4 | 4 | 4 | — |
Swell 2 Height (m) Direction Period (s) | — | W 15 | W 15 | W 14 | W 14 | W 14 | W 14 | W 14 | W 14 | W 14 | SW 6 | SW 6 | SW 6 | SW 6 | W 13 | W 13 | W 13 | W 13 | — | — | W 10 | W 12 | W 15 |
| kJ | — | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 1 | 1 | 1 | 1 | 3 | 3 | 3 | 3 | — | — | 2 | 3 | 4 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | W 14 | W 14 | — | — | W 14 | W 13 | W 13 | W 13 | — | — | W 6 | W 16 | W 6 | — | — | — | W 12 |
| kJ | — | — | — | — | — | — | 4 | 4 | — | — | 4 | 4 | 3 | 3 | — | — | 1 | 5 | 1 | — | — | — | 3 |
Wind waves Height (m) Direction Period (s) | WSW 7 | NW 4 | NW 4 | NW 5 | NNW 5 | NNW 4 | NW 4 | NW 4 | NW 4 | NW 4 | — | — | — | NW 4 | NNW 4 | NW 4 | — | — | NW 5 | NW 4 | NW 3 | NW 3 | — |
| kJ | 64 | 2 | 12 | 17 | 31 | 18 | 9 | 8 | 9 | 7 | — | — | — | 5 | 6 | 4 | — | — | 4 | 2 | 2 | 2 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||||
Distance (km) | 26 | 49 | 131 | 144 | 782 | 227 | 142 | 140 | 140 | 140 | 27 | 143 | 281 | 138 | 130 | 145 | 138 | 138 | 191 | 215 | 271 | 291 | 130 |
Best forecast wave conditions in Mid Wales | |||||||||||||||||||||||
Best forecast wave conditions in United Kingdom | |||||||||||||||||||||||
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