Surf Forecasts:
How big are the waves at Harlech today (18 Aug):
- Morning surf: Morning surf (18 Aug, local time) - 2.5ft (0.7m), 6s period with WSW swell.
- Afternoon surf: Afternoon surf (18 Aug, local time) - 2ft (0.6m), 6s period with WSW swell.
- Evening surf: Evening surf (18 Aug, local time) - 1.5ft (0.5m), 6s period with SW swell.
The current surf forecast for Harlech at 5PM is: 0.6m 6s primary swell from a West-southwest direction and 0.3m 4s secondary swell from a Northwest direction (forecast issued at 12:00pm August 18). The wind direction is predicted to be onshore.
| Time (BST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (18 Aug) | 2.5ft (0.7m) | 6s |
| Afternoon (18 Aug) | 2ft (0.6m) | 6s |
| Evening (18 Aug) | 1.5ft (0.5m) | 6s |
Table - waves today at Harlech. (Swell directed towards the surf break)
Short Range ForecastModerate rain (total 17mm), heaviest on Tue night. Very mild (max 18°C on Tue afternoon, min 12°C on Thu night). Wind will be generally light. | |||||||||||||||||||||
Tue 18 | Wednesday 19 | Thursday 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 6 | WSW 6 | WSW 6 | SW 6 | SW 6 | WSW 5 | WSW 4 | WSW 4 | W 4 | WSW 4 | WSW 4 | WSW 5 | WSW 6 | WSW 6 | WSW 6 | WSW 5 | WSW 6 | WSW 6 | NW 5 | SW 6 | NNW 4 |
Wave Graph  | |||||||||||||||||||||
 kJ | 35 | 39 | 24 | 18 | 16 | 14 | 17 | 18 | 13 | 13 | 12 | 39 | 53 | 40 | 53 | 19 | 28 | 16 | 22 | 12 | 10 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | on | cross-on | on | on | on | on | on | on | cross-on | cross-on | cross-on | on | cross-on | cross-on | cross-on | cross-on | cross-off | cross-off | cross-off |
High Tide | 12:27PM3.74m | 00:47AM3.76m | 1:08PM3.43m | 1:31AM3.34m | 1:55PM3.11m | ||||||||||||||||
Low Tide | 7:06AM0.73m | 7:09PM0.90m | 7:36AM1.06m | 7:44PM1.19m | 8:11AM1.37m | 8:32PM1.46m | |||||||||||||||
 | |  | |  | |  |  | | |  | | | | | | | | | |  | |
 | 6:01 | — | — | — | — | — | 6:03 | — | — | — | — | — | — | — | 6:05 | — | — | — | — | — | — |
 | — | — | — | 8:37 | — | — | — | — | — | — | — | 8:35 | — | — | — | — | — | — | — | 8:32 | — |
mm | — | — | — | — | 2 | 2 | 2 | 1 | 1 | 2 | — | 1 | 1 | 1 | 1 | 1 | — | 1 | 1 | — | — |
Temp °C | 17 | 17 | 18 | 17 | 14 | 14 | 14 | 14 | 15 | 16 | 17 | 16 | 16 | 15 | 14 | 13 | 15 | 16 | 17 | 16 | 13 |
Feels °C | 15 | 15 | 15 | 16 | 13 | 12 | 12 | 12 | 13 | 13 | 13 | 13 | 14 | 13 | 13 | 11 | 13 | 13 | 13 | 13 | 11 |
Swell 1 Height (m) Direction Period (s) | WSW 6 | — | NW 4 | WNW 4 | SW 6 | — | — | W 17 | WSW 6 | W 16 | WNW 4 | — | W 16 | W 16 | W 15 | WSW 5 | WSW 6 | WSW 6 | WSW 6 | SW 6 | WSW 6 |
| kJ | 35 | — | 3 | 2 | 16 | — | — | 6 | 3 | 5 | 1 | — | 5 | 5 | 5 | 19 | 28 | 13 | 15 | 10 | 8 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | W 17 | W 16 | — | — | — | — | — | — | W 15 | W 15 | W 14 | W 14 | W 14 | W 14 |
| kJ | — | — | — | — | — | — | — | 6 | 5 | — | — | — | — | — | — | 4 | 4 | 4 | 4 | 4 | 4 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | NW 4 | WSW 6 | WSW 6 | SW 6 | NW 4 | WSW 5 | WSW 4 | WSW 4 | W 4 | WSW 4 | WSW 4 | WSW 5 | WSW 6 | WSW 6 | WSW 6 | NW 4 | NW 4 | NW 4 | NW 5 | NNW 4 | NNW 4 |
| kJ | 3 | 39 | 24 | 18 | 1 | 14 | 17 | 18 | 13 | 13 | 12 | 39 | 53 | 40 | 53 | 4 | 9 | 16 | 22 | 12 | 10 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 26 | 26 | 399 | 227 | 280 | 142 | 263 | 143 | 305 | 305 | 305 | 306 | 283 | 61 | 137 | 137 | 137 | 137 | 137 | 143 | 67 |
Best forecast wave conditions in Mid Wales | |||||||||||||||||||||
Best forecast wave conditions in United Kingdom | |||||||||||||||||||||
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