Surf Forecasts:
How big are the waves at Llanddwyn Island today (18 Sep):
- Afternoon surf: Afternoon surf (18 Sep, local time) - 7ft (2.2m), 7s period with SW swell.
- Evening surf: Evening surf (18 Sep, local time) - 7.5ft (2.3m), 8s period with SW swell.
The current surf forecast for Llanddwyn Island at 11PM is: 2.3m 8s primary swell from a Southwest direction (forecast issued at 06:00pm September 18). The wind direction is predicted to be onshore.
| Time (BST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (18 Sep) | - | - |
| Afternoon (18 Sep) | 7ft (2.2m) | 7s |
| Evening (18 Sep) | 7.5ft (2.3m) | 8s |
Table - waves today at Llanddwyn Island. (Swell directed towards the surf break)
Short Range ForecastModerate rain (total 10mm), heaviest on Fri afternoon. Very mild (max 17°C on Sat afternoon, min 12°C on Sat night). Winds decreasing (strong winds from the SW on Fri afternoon, light winds from the SSW by Sun afternoon). | |||||||||||||||||||
Fri 18 | Saturday 19 | Sunday 20 | |||||||||||||||||
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) | SW 7 | SW 8 | SW 8 | SW 8 | SW 8 | SW 8 | WSW 7 | WSW 7 | SW 7 | WSW 7 | WSW 7 | WSW 5 | W 5 | W 5 | WNW 5 | SW 6 | SW 6 | SW 6 | SW 6 |
Wave Graph  | |||||||||||||||||||
 kJ | 612 | 574 | 589 | 558 | 648 | 558 | 382 | 264 | 211 | 159 | 129 | 80 | 74 | 74 | 32 | 23 | 18 | 13 | 9 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | on | on | on | on | cross-on | on | on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on |
High Tide | 2:30PM3.01m | 3:16AM2.79m | 3:54PM2.78m | 5:10AM2.63m | 5:52PM2.79m | ||||||||||||||
Low Tide | 9:24PM1.38m | 9:52AM1.62m | 10:46PM1.58m | 11:27AM1.71m | |||||||||||||||
 |  |  |  | |  |  |  | | |  | | |  | | | | | | |
 | — | — | — | — | 6:56 | — | — | — | — | — | — | — | 6:58 | — | — | — | — | — | — |
 | — | 7:27 | — | — | — | — | — | — | — | 7:23 | — | — | — | — | — | — | — | 7:22 | — |
mm | 8 | 1 | — | — | — | — | 1 | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 15 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 17 | 16 | 15 | 14 | 13 | 12 | 12 | 13 | 13 | 13 | 12 |
Feels °C | 8 | 10 | 10 | 11 | 10 | 10 | 10 | 10 | 12 | 11 | 10 | 8 | 7 | 7 | 7 | 9 | 10 | 11 | 8 |
Swell 1 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | W 14 | W 14 | SW 6 | SW 6 | NW 5 | SW 6 | SW 6 |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | 4 | 4 | 28 | 23 | 11 | 13 | 9 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | W 14 | W 14 | SW 6 | NW 4 | NW 4 |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 4 | 4 | 18 | 5 | 3 |
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 7 | SW 8 | SW 8 | SW 8 | SW 8 | SW 8 | WSW 7 | WSW 7 | SW 7 | WSW 7 | WSW 7 | WSW 5 | W 5 | W 5 | WNW 5 | NW 5 | — | — | — |
| kJ | 612 | 574 | 589 | 558 | 648 | 558 | 382 | 264 | 211 | 159 | 129 | 80 | 74 | 74 | 32 | 20 | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 540 | 385 | 272 | 496 | 496 | 485 | 559 | 540 | 540 | 284 | 284 | 225 | 159 | 173 | 168 | 175 | 175 | 151 | 162 |
Best forecast wave conditions in Anglesy | |||||||||||||||||||
Best forecast wave conditions in United Kingdom | |||||||||||||||||||
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