Surf Forecasts:
How big are the waves at Harlech today (18 Sep):
- Morning surf: Morning surf (18 Sep, local time) - 3.5ft (1.0m), 5s period with WSW swell.
- Afternoon surf: Afternoon surf (18 Sep, local time) - 6ft (1.8m), 7s period with SW swell.
- Evening surf: Evening surf (18 Sep, local time) - 6.5ft (2.0m), 8s period with WSW swell.
The current surf forecast for Harlech at 8PM is: 2.0m 8s primary swell from a West-southwest direction (forecast issued at 12:00pm September 18). The wind direction is predicted to be cross-onshore.
| Time (BST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (18 Sep) | 3.5ft (1.0m) | 5s |
| Afternoon (18 Sep) | 6ft (1.8m) | 7s |
| Evening (18 Sep) | 6.5ft (2.0m) | 8s |
Table - waves today at Harlech. (Swell directed towards the surf break)
Short Range ForecastModerate rain (total 19mm), heaviest on Fri afternoon. Very mild (max 17°C on Sat morning, min 12°C on Sat night). Winds decreasing (strong winds from the SW on Fri afternoon, calm by Sun afternoon). | |||||||||||||||||||||
Fri 18 | Saturday 19 | Sunday 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) | WSW 5 | SW 6 | WSW 7 | WSW 8 | WSW 8 | WSW 8 | WSW 8 | WSW 8 | WSW 7 | WSW 7 | WSW 7 | WSW 5 | WSW 5 | W 5 | W 5 | W 5 | W 5 | NW 5 | WSW 6 | SW 6 | SW 6 |
Wave Graph  | |||||||||||||||||||||
 kJ | 52 | 137 | 417 | 476 | 436 | 441 | 452 | 414 | 362 | 203 | 157 | 54 | 50 | 51 | 43 | 37 | 36 | 15 | 16 | 10 | 10 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | on | on | on | on | on | on | on | cross-on | cross-on | cross-on | on | glassy | cross |
High Tide | 1:05PM3.19m | 1:34AM2.90m | 2:01PM2.86m | 2:53AM2.60m | 3:54PM2.70m | ||||||||||||||||
Low Tide | 7:10AM1.45m | 7:50PM1.49m | 8:13AM1.69m | 9:19PM1.69m | 9:58AM1.81m | ||||||||||||||||
 |  |  | |  | | | |  | |  | |  | |  |  | | | | | | |
 | 6:54 | — | — | — | — | — | 6:56 | — | — | — | — | — | — | — | 6:56 | — | — | — | — | — | — |
 | — | — | — | 7:25 | — | — | — | — | — | — | — | 7:22 | — | — | — | — | — | — | — | 7:21 | — |
mm | — | 1 | 11 | 4 | — | — | — | 1 | 1 | 1 | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 15 | 13 | 14 | 16 | 16 | 16 | 16 | 16 | 16 | 17 | 17 | 16 | 15 | 14 | 13 | 12 | 13 | 13 | 13 | 12 | 12 |
Feels °C | 10 | 7 | 7 | 11 | 11 | 11 | 11 | 11 | 11 | 12 | 13 | 12 | 12 | 10 | 9 | 8 | 9 | 10 | 11 | 11 | 9 |
Swell 1 Height (m) Direction Period (s) | NW 5 | NW 5 | — | — | — | — | — | — | — | — | — | — | — | — | — | W 14 | W 14 | WSW 6 | WSW 6 | SW 6 | SW 6 |
| kJ | 4 | 4 | — | — | — | — | — | — | — | — | — | — | — | — | — | 4 | 4 | 15 | 16 | 10 | 10 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | W 14 | NW 5 | NW 4 | WNW 4 |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 4 | 5 | 3 | 2 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | WSW 5 | SW 6 | WSW 7 | WSW 8 | WSW 8 | WSW 8 | WSW 8 | WSW 8 | WSW 7 | WSW 7 | WSW 7 | WSW 5 | WSW 5 | W 5 | W 5 | W 5 | W 5 | NW 5 | — | — | — |
| kJ | 52 | 137 | 417 | 476 | 436 | 441 | 452 | 414 | 362 | 203 | 157 | 54 | 50 | 51 | 43 | 37 | 36 | 11 | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 554 | 399 | 509 | 399 | 399 | 462 | 450 | 450 | 462 | 509 | 307 | 288 | 227 | 267 | 131 | 142 | 138 | 142 | 143 | 130 | 131 |
Best forecast wave conditions in Mid Wales | |||||||||||||||||||||
Best forecast wave conditions in United Kingdom | |||||||||||||||||||||
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