Surf Forecasts:
How big are the waves at Harlech today (20 Sep):
- Morning surf: Morning surf (20 Sep, local time) - 2ft (0.6m), 6s period with WSW swell.
- Afternoon surf: Afternoon surf (20 Sep, local time) - 1.5ft (0.4m), 6s period with WSW swell.
- Evening surf: Evening surf (20 Sep, local time) - 1.5ft (0.4m), 6s period with SW swell.
The current surf forecast for Harlech at 1PM is: 0.4m 6s primary swell from a West-southwest direction and 0.1m 14s secondary swell from a West direction, 0.5m 5s secondary swell from a Northwest direction (forecast issued at 06:00am September 20). The wind direction is predicted to be onshore.
| Time (BST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (20 Sep) | 2ft (0.6m) | 6s |
| Afternoon (20 Sep) | 1.5ft (0.4m) | 6s |
| Evening (20 Sep) | 1.5ft (0.4m) | 6s |
Table - waves today at Harlech. (Swell directed towards the surf break)
Short Range ForecastMostly dry. Very mild (max 17°C on Tue morning, min 11°C on Sun night). Wind will be generally light. | |||||||||||||||||||||||
Sunday 20 | Monday 21 | Tuesday 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) | W 5 | W 5 | WSW 6 | NW 5 | WSW 6 | SW 6 | SW 6 | SW 6 | SW 6 | WSW 6 | SW 4 | SW 4 | SW 4 | SW 4 | SW 4 | SW 4 | SW 4 | WSW 4 | WSW 4 | WSW 3 | W 8 | W 12 | W 12 |
Wave Graph  | |||||||||||||||||||||||
 kJ | 55 | 48 | 23 | 14 | 15 | 10 | 10 | 6 | 6 | 4 | 5 | 5 | 4 | 4 | 4 | 4 | 4 | 3 | 1 | 1 | 1 | 3 | 3 |
Wind (km/h) | |||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | cross-on | cross-on | on | on | glassy | cross-off | cross-off | cross-off | cross-off | cross | cross | cross | cross-off | cross | cross | cross | cross | cross | cross-on | cross-on | glassy | glassy |
High Tide | 3:54PM2.70m | 5:10AM2.61m | 5:43PM2.89m | 6:18AM2.86m | 6:34PM3.22m | ||||||||||||||||||
Low Tide | 9:58AM1.81m | 11:13PM1.68m | 11:45AM1.68m | 00:38AM1.43m | 12:52PM1.39m | ||||||||||||||||||
 |  |  | | | |  | | | | |  | | | | |  | | | | | | | |
 | 6:56 | — | — | — | — | — | — | — | 6:58 | — | — | — | — | — | — | — | — | 7:01 | — | — | — | — | — |
 | — | — | — | — | — | 7:21 | — | — | — | — | — | — | — | 7:17 | — | — | — | — | — | — | — | 7:15 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 14 | 13 | 13 | 14 | 13 | 12 | 11 | 11 | 11 | 12 | 13 | 15 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 17 | 17 | 17 | 16 |
Feels °C | 9 | 8 | 9 | 11 | 11 | 11 | 9 | 8 | 8 | 9 | 11 | 14 | 16 | 17 | 16 | 16 | 16 | 16 | 16 | 17 | 18 | 18 | 17 |
Swell 1 Height (m) Direction Period (s) | — | W 14 | WSW 6 | WSW 6 | WSW 6 | SW 6 | SW 6 | SW 6 | SW 6 | WSW 6 | SW 6 | SW 6 | SW 4 | SW 4 | SW 4 | SW 4 | SW 4 | WSW 4 | WSW 4 | WSW 3 | WSW 3 | — | — |
| kJ | — | 4 | 22 | 14 | 15 | 10 | 10 | 6 | 6 | 4 | 1 | 2 | 4 | 4 | 4 | 4 | 4 | 3 | 1 | 1 | 1 | — | — |
Swell 2 Height (m) Direction Period (s) | — | — | W 14 | W 14 | NW 5 | NW 4 | NW 4 | NW 4 | — | — | — | SW 6 | SW 6 | SW 6 | SW 6 | W 6 | W 6 | W 6 | W 6 | W 6 | W 6 | W 6 | W 6 |
| kJ | — | — | 4 | 4 | 5 | 3 | 1 | 1 | — | — | — | 2 | 2 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | NW 4 | — | — | — | — | — | — | — | — | — | — | W 8 | W 12 | W 12 |
| kJ | — | — | — | — | — | — | — | — | — | 1 | — | — | — | — | — | — | — | — | — | — | 1 | 3 | 3 |
Wind waves Height (m) Direction Period (s) | W 5 | W 5 | NW 5 | NW 5 | — | — | — | — | — | — | SW 4 | SW 4 | — | — | — | — | — | — | — | — | — | — | — |
| kJ | 55 | 48 | 23 | 11 | — | — | — | — | — | — | 5 | 5 | — | — | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||||
Distance (km) | 137 | 142 | 142 | 142 | 143 | 130 | 131 | 131 | 131 | 138 | 191 | 248 | 288 | 221 | 258 | 258 | 147 | 221 | 147 | 206 | 143 | 137 | 125 |
Best forecast wave conditions in Mid Wales | |||||||||||||||||||||||
Best forecast wave conditions in United Kingdom | |||||||||||||||||||||||
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