Surf Forecasts:
How big are the waves at Trefor today (18 Sep):
- Morning surf: Morning surf (18 Sep, local time) - 1.5ft (0.4m), 5s period with NW swell.
- Afternoon surf: Afternoon surf (18 Sep, local time) - 7ft (2.1m), 7s period with SW swell.
- Evening surf: Evening surf (18 Sep, local time) - 7ft (2.1m), 8s period with SW swell.
The current surf forecast for Trefor at 8PM is: 2.1m 8s primary swell from a Southwest direction (forecast issued at 12:00pm September 18). The wind direction is predicted to be cross-offshore.
| Time (BST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (18 Sep) | 1.5ft (0.4m) | 5s |
| Afternoon (18 Sep) | 7ft (2.1m) | 7s |
| Evening (18 Sep) | 7ft (2.1m) | 8s |
Table - waves today at Trefor. (Swell directed towards the surf break)
Short Range ForecastModerate rain (total 12mm), heaviest on Fri afternoon. Very mild (max 17°C on Sat afternoon, min 12°C on Sun morning). Winds decreasing (strong winds from the SW on Fri afternoon, light winds from the S 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) | NW 5 | SW 6 | SW 7 | SW 8 | SW 8 | SW 7 | SW 8 | SW 7 | SW 7 | WSW 7 | WSW 7 | SW 5 | WSW 7 | WSW 5 | W 5 | W 5 | W 5 | SW 6 | SW 6 | SW 6 | SW 6 |
Wave Graph  | |||||||||||||||||||||
 kJ | 8 | 0 | 582 | 505 | 505 | 529 | 544 | 492 | 340 | 237 | 196 | 0 | 113 | 54 | 66 | 57 | 46 | 23 | 18 | 13 | 12 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross | cross | cross | cross | cross | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-off | off |
High Tide | 1:41PM2.78m | 2:17AM2.53m | 2:49PM2.51m | 4:02AM2.31m | 5:01PM2.45m | ||||||||||||||||
Low Tide | 8:12AM1.28m | 8:45PM1.29m | 9:10AM1.50m | 10:06PM1.48m | 10:44AM1.59m | ||||||||||||||||
 |  |  | |  | | | |  | | |  |  |  | |  | | | | | | |
 | 6:54 | — | — | — | — | — | 6:56 | — | — | — | — | — | — | — | 6:58 | — | — | — | — | — | — |
 | — | — | — | 7:27 | — | — | — | — | — | — | — | 7:23 | — | — | — | — | — | — | — | 7:22 | — |
mm | — | 1 | 9 | 1 | — | — | — | — | 1 | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 15 | 13 | 15 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 17 | 17 | 15 | 14 | 13 | 13 | 13 | 12 | 13 | 13 | 13 |
Feels °C | 10 | 6 | 8 | 11 | 11 | 11 | 11 | 11 | 11 | 10 | 13 | 12 | 11 | 9 | 8 | 8 | 8 | 8 | 11 | 11 | 10 |
Swell 1 Height (m) Direction Period (s) | NW 5 | — | — | — | — | — | — | — | — | — | — | — | W 15 | — | W 14 | W 14 | W 14 | SW 6 | NW 5 | SW 6 | SW 6 |
| kJ | 8 | — | — | — | — | — | — | — | — | — | — | — | 4 | — | 4 | 4 | 4 | 23 | 10 | 13 | 12 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | W 14 | W 14 | SW 6 | NW 4 | NW 4 |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 4 | 4 | 18 | 5 | 2 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | W 14 | W 14 | W 14 |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 4 | 4 | 4 |
Wind waves Height (m) Direction Period (s) | SW 5 | SW 6 | SW 7 | SW 8 | SW 8 | SW 7 | SW 8 | SW 7 | SW 7 | WSW 7 | WSW 7 | SW 5 | WSW 7 | WSW 5 | W 5 | W 5 | W 5 | NW 5 | — | — | — |
| kJ | 76 | 198 | 582 | 505 | 505 | 529 | 544 | 492 | 340 | 237 | 196 | 70 | 113 | 54 | 66 | 57 | 46 | 18 | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 572 | 382 | 525 | 382 | 382 | 481 | 470 | 470 | 481 | 525 | 318 | 276 | 215 | 255 | 144 | 160 | 152 | 160 | 160 | 136 | 147 |
Best forecast wave conditions in Lleyn Peninsula | |||||||||||||||||||||
Best forecast wave conditions in United Kingdom | |||||||||||||||||||||
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