Surf Forecasts:
How big are the waves at Trefor today (21 Aug):
- Morning surf: Morning surf (21 Aug, local time) - 2ft (0.6m), 5s period with NW swell.
- Afternoon surf: Afternoon surf (21 Aug, local time) - 1ft (0.3m), 4s period with W swell.
- Evening surf: Evening surf (21 Aug, local time) - 1.5ft (0.4m), 4s period with NNW swell.
The current surf forecast for Trefor at 12PM is: 0.8m 5s primary swell from a Northwest direction and 0.5m 5s secondary swell from a Northwest direction, 0.3m 4s secondary swell from a West direction (forecast issued at 06:00am August 21). The wind direction is predicted to be cross-onshore.
| Time (BST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (21 Aug) | 2ft (0.6m) | 5s |
| Afternoon (21 Aug) | 1ft (0.3m) | 4s |
| Evening (21 Aug) | 1.5ft (0.4m) | 4s |
Table - waves today at Trefor. (Swell directed towards the surf break)
Short Range ForecastLight rain (total 4mm), mostly falling on Fri morning. Very mild (max 17°C on Fri afternoon, min 12°C on Fri night). Wind will be generally light. | |||||||||||||||||||||||
Friday 21 | Saturday 22 | Sunday 23 | |||||||||||||||||||||
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) | NNW 5 | NW 5 | NW 5 | NW 5 | W 4 | NNW 4 | W 16 | W 16 | NNW 5 | NW 5 | NW 5 | NW 5 | NW 5 | NW 5 | SW 15 | SW 15 | SW 15 | SW 14 | SW 14 | SW 14 | SW 14 | SW 14 | SW 13 |
Wave Graph  | |||||||||||||||||||||||
 kJ | 17 | 19 | 29 | 8 | 3 | 7 | 7 | 7 | 9 | 7 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 7 | 7 | 7 | 7 |
Wind (km/h) | |||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | on | on | on | on | on | cross-on | cross-on | cross-on | cross | cross-on | cross-on | on | on | cross |
High Tide | 3:53PM2.53m | 4:48AM2.45m | 5:33PM2.53m | 6:20AM2.50m | 6:50PM2.69m | ||||||||||||||||||
Low Tide | 10:01AM1.43m | 10:49PM1.46m | 11:38AM1.52m | 00:38AM1.42m | 1:09PM1.39m | ||||||||||||||||||
 |  |  | | |  |  | | | | | | | | | | | | | | | | | |
 | 6:07 | — | — | — | — | — | — | — | 6:09 | — | — | — | — | — | — | — | 6:11 | — | — | — | — | — | — |
 | — | — | — | — | — | 8:31 | — | — | — | — | — | — | — | 8:30 | — | — | — | — | — | — | — | 8:28 | — |
mm | — | 1 | 2 | 1 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 13 | 13 | 14 | 16 | 17 | 16 | 13 | 13 | 12 | 12 | 13 | 14 | 14 | 15 | 13 | 13 | 13 | 13 | 15 | 16 | 16 | 17 | 15 |
Feels °C | 9 | 10 | 12 | 14 | 14 | 12 | 10 | 11 | 9 | 9 | 10 | 10 | 10 | 11 | 10 | 11 | 11 | 12 | 14 | 14 | 14 | 15 | 12 |
Swell 1 Height (m) Direction Period (s) | WSW 6 | SW 6 | NW 5 | NW 5 | NW 4 | W 4 | SW 6 | SW 13 | SW 13 | SW 13 | SW 15 | SW 15 | SW 15 | SW 15 | SW 15 | NNW 5 | — | NW 4 | — | SW 14 | SW 14 | SW 14 | SW 13 |
| kJ | 3 | 1 | 15 | 8 | 5 | 1 | 1 | 7 | 7 | 7 | 8 | 8 | 8 | 8 | 8 | 2 | — | 1 | — | 7 | 7 | 7 | 7 |
Swell 2 Height (m) Direction Period (s) | SW 14 | SW 14 | SW 6 | W 4 | W 4 | SW 6 | SW 13 | SW 5 | W 6 | — | — | W 6 | SW 12 | W 12 | W 12 | SW 15 | SW 15 | SW 14 | SW 14 | — | — | — | — |
| kJ | 8 | 7 | 1 | 3 | 3 | 1 | 7 | 1 | 1 | — | — | 1 | 6 | 3 | 3 | 8 | 8 | 8 | 8 | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | SW 14 | W 14 | SW 13 | SW 6 | SW 6 | SW 13 | W 16 | W 16 | W 16 | W 6 | W 6 | — | W 6 | — | — | W 12 | W 12 | — | — | — | — | — | — |
| kJ | 8 | 4 | 7 | 1 | 1 | 7 | 5 | 5 | 5 | 1 | 1 | — | 1 | — | — | 3 | 3 | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | NNW 5 | NW 5 | NW 5 | — | — | NNW 4 | NNW 4 | NNW 4 | NNW 5 | NW 5 | NW 5 | NW 5 | NW 5 | NW 5 | NNW 5 | NNW 2 | — | — | — | — | — | — | — |
| kJ | 17 | 19 | 29 | — | — | 6 | 5 | 5 | 9 | 6 | 6 | 6 | 8 | 5 | 4 | 1 | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||||
Distance (km) | 147 | 160 | 160 | 160 | 298 | 147 | 155 | 215 | 215 | 155 | 147 | 204 | 298 | 333 | 204 | 155 | 155 | 204 | 153 | 283 | 294 | 277 | 136 |
Best forecast wave conditions in Lleyn Peninsula | |||||||||||||||||||||||
Best forecast wave conditions in United Kingdom | |||||||||||||||||||||||
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