Surf Forecasts:
How big are the waves at Trefor today (20 Sep):
- Morning surf: Morning surf (20 Sep, local time) - 3ft (0.9m), 5s period with WNW swell.
- Afternoon surf: Afternoon surf (20 Sep, local time) - 1.5ft (0.5m), 6s period with SW swell.
- Evening surf: Evening surf (20 Sep, local time) - 1.5ft (0.4m), 6s period with SW swell.
The current surf forecast for Trefor at 9PM is: 0.4m 6s primary swell from a Southwest direction and 0.3m 4s secondary swell from a Northwest direction (forecast issued at 12:00pm September 20). The wind direction is predicted to be offshore.
| Time (BST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (20 Sep) | 3ft (0.9m) | 5s |
| Afternoon (20 Sep) | 1.5ft (0.5m) | 6s |
| Evening (20 Sep) | 1.5ft (0.4m) | 6s |
Table - waves today at Trefor. (Swell directed towards the surf break)
Short Range ForecastMostly dry. Very mild (max 17°C on Mon afternoon, min 13°C on Sun morning). Wind will be generally light. | |||||||||||||||||||||
Sun 20 | Monday 21 | Tuesday 22 | |||||||||||||||||||
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) | NW 5 | SW 6 | SW 6 | SW 6 | SW 6 | SW 6 | WSW 6 | W 13 | W 13 | W 13 | W 13 | SW 6 | W 6 | SW 4 | SW 4 | SW 4 | SW 4 | W 6 | W 12 | W 12 | W 18 |
Wave Graph  | |||||||||||||||||||||
 kJ | 35 | 19 | 18 | 12 | 9 | 5 | 3 | 3 | 3 | 3 | 3 | 1 | 1 | 0 | 0 | 0 | 0 | 1 | 3 | 3 | 6 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-on | cross-off | off | off | off | off | off | off | off | off | off | off | off | off | off | cross-off | cross-off | off | off |
High Tide | 5:01PM2.45m | 6:07AM2.38m | 6:29PM2.65m | 7:04AM2.58m | 7:16PM2.91m | ||||||||||||||||
Low Tide | 10:44AM1.59m | 11:56PM1.45m | 12:24PM1.46m | 1:13AM1.21m | 1:25PM1.19m | ||||||||||||||||
 | | |  |  |  | | |  | | | |  | | | | | | | | | |
 | 6:58 | — | — | — | — | — | — | 7:00 | — | — | — | — | — | — | — | 7:01 | — | — | — | — | — |
 | — | — | — | 7:22 | — | — | — | — | — | — | — | 7:20 | — | — | — | — | — | — | — | 7:16 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 14 | 13 | 13 | 13 | 13 | 13 | 13 | 14 | 14 | 16 | 17 | 17 | 17 | 16 | 16 | 16 | 16 | 17 | 17 | 17 | 16 |
Feels °C | 10 | 10 | 11 | 12 | 11 | 10 | 10 | 11 | 12 | 15 | 17 | 17 | 16 | 15 | 15 | 16 | 16 | 17 | 17 | 17 | 16 |
Swell 1 Height (m) Direction Period (s) | SW 6 | SW 6 | SW 6 | SW 6 | SW 6 | SW 6 | WSW 6 | — | — | W 13 | — | SW 6 | W 6 | — | — | — | — | W 6 | W 5 | W 5 | W 18 |
| kJ | 29 | 18 | 18 | 12 | 9 | 5 | 3 | — | — | 3 | — | 1 | 1 | — | — | — | — | 1 | 1 | 1 | 6 |
Swell 2 Height (m) Direction Period (s) | W 14 | W 14 | NW 5 | NW 4 | NW 4 | NW 4 | — | — | W 13 | W 13 | W 13 | — | — | — | — | — | — | — | W 12 | W 12 | W 5 |
| kJ | 4 | 4 | 10 | 3 | 2 | 1 | — | — | 3 | 3 | 3 | — | — | — | — | — | — | — | 3 | 3 | 1 |
Swell 3 Height (m) Direction Period (s) | — | — | W 14 | W 14 | W 14 | — | — | W 13 | — | — | — | — | — | — | — | — | — | — | W 12 | W 12 | W 12 |
| kJ | — | — | 4 | 4 | 4 | — | — | 3 | — | — | — | — | — | — | — | — | — | — | 3 | 3 | 3 |
Wind waves Height (m) Direction Period (s) | NW 5 | NW 5 | — | — | — | SW 3 | SSW 3 | SSW 4 | SW 4 | SW 4 | SW 4 | SSW 4 | SSW 3 | SW 4 | SW 4 | SW 4 | SW 4 | SW 3 | SW 3 | SW 3 | SW 3 |
| kJ | 35 | 19 | — | — | — | 2 | 4 | 12 | 16 | 14 | 8 | 6 | 5 | 7 | 8 | 5 | 5 | 3 | 2 | 2 | 2 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 158 | 152 | 137 | 153 | 147 | 147 | 147 | 208 | 208 | 276 | 280 | 252 | 236 | 271 | 271 | 236 | 156 | 222 | 160 | 137 | 130 |
Best forecast wave conditions in Lleyn Peninsula | |||||||||||||||||||||
Best forecast wave conditions in United Kingdom | |||||||||||||||||||||
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