Surf Forecasts:
How big are the waves at Harlech today (21 Aug):
- Afternoon surf: Afternoon surf (21 Aug, local time) - 1.5ft (0.4m), 4s period with WNW swell.
- Evening surf: Evening surf (21 Aug, local time) - 1.5ft (0.5m), 4s period with NW swell.
The current surf forecast for Harlech at 9PM is: 0.5m 4s primary swell from a Northwest direction and 0.1m 6s secondary swell from a Southwest direction, 0.1m 13s secondary swell from a West direction (forecast issued at 06:00pm August 21). The wind direction is predicted to be cross-offshore.
| Time (BST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (21 Aug) | - | - |
| Afternoon (21 Aug) | 1.5ft (0.4m) | 4s |
| Evening (21 Aug) | 1.5ft (0.5m) | 4s |
Table - waves today at Harlech. (Swell directed towards the surf break)
Short Range ForecastSome drizzle, heaviest during Fri afternoon. Warm (max 21°C on Mon morning, min 10°C on Sat night). Wind will be generally light. | |||||||||||||||||||
Fri 21 | Saturday 22 | Sunday 23 | |||||||||||||||||
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) | WNW 5 | NW 4 | NNW 4 | W 13 | W 13 | W 16 | W 15 | W 15 | W 15 | W 15 | W 15 | W 15 | W 15 | W 15 | W 14 | W 14 | W 14 | SW 13 | SW 12 |
Wave Graph  | |||||||||||||||||||
 kJ | 8 | 8 | 7 | 3 | 3 | 5 | 4 | 4 | 4 | 5 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 7 | 6 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross-off | cross-off | cross-off | cross | cross-on | cross-on | cross-on | cross | cross-off | cross-off | cross-off | cross-off | glassy | cross-on | cross-on | cross | cross-off |
High Tide | 3:05PM2.85m | 3:58AM2.73m | 4:48PM2.79m | 5:37AM2.77m | 6:09PM2.98m | ||||||||||||||
Low Tide | 9:50PM1.66m | 10:38AM1.74m | 11:51PM1.66m | 12:30PM1.63m | |||||||||||||||
 |  |  | | | | | | | | | | | | | | | | | |
 | — | — | — | — | 6:07 | — | — | — | — | — | — | — | 6:09 | — | — | — | — | — | — |
 | — | 8:30 | — | — | — | — | — | — | — | 8:29 | — | — | — | — | — | — | — | 8:25 | — |
mm | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 18 | 16 | 13 | 12 | 12 | 12 | 14 | 16 | 16 | 16 | 12 | 11 | 11 | 10 | 14 | 17 | 18 | 18 | 14 |
Feels °C | 15 | 13 | 11 | 10 | 11 | 11 | 13 | 13 | 12 | 13 | 9 | 9 | 9 | 8 | 13 | 15 | 16 | 17 | 12 |
Swell 1 Height (m) Direction Period (s) | WNW 5 | SW 6 | SW 6 | NW 4 | NW 4 | NW 5 | NW 5 | W 15 | W 15 | W 15 | W 15 | W 15 | NNW 3 | — | W 14 | W 14 | W 14 | SW 13 | NNW 3 |
| kJ | 8 | 1 | 1 | 4 | 3 | 3 | 4 | 4 | 4 | 4 | 4 | 4 | 1 | — | 4 | 4 | 4 | 7 | 1 |
Swell 2 Height (m) Direction Period (s) | SW 6 | W 13 | W 13 | W 6 | W 13 | W 13 | W 15 | — | W 10 | W 12 | W 12 | — | W 15 | W 15 | — | — | — | — | SW 12 |
| kJ | 1 | 3 | 3 | 1 | 3 | 3 | 4 | — | 2 | 3 | 3 | — | 4 | 4 | — | — | — | — | 6 |
Swell 3 Height (m) Direction Period (s) | W 13 | W 8 | — | W 13 | W 6 | W 16 | W 6 | — | — | — | — | W 12 | — | — | — | — | — | — | — |
| kJ | 3 | 1 | — | 3 | 1 | 5 | 1 | — | — | — | — | 3 | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | NW 4 | NNW 4 | — | — | — | — | NW 4 | NW 3 | NW 3 | NW 3 | NNW 3 | — | — | — | — | — | NW 3 | — |
| kJ | — | 8 | 7 | — | — | — | — | 2 | 3 | 5 | 3 | 2 | — | — | — | — | — | 1 | — |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 143 | 334 | 299 | 131 | 131 | 138 | 191 | 138 | 131 | 147 | 299 | 308 | 215 | 191 | 138 | 215 | 215 | 130 | 258 |
Best forecast wave conditions in Mid Wales | |||||||||||||||||||
Best forecast wave conditions in United Kingdom | |||||||||||||||||||
Header Global | |||||||||||||||||||
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