Surf Forecasts:
How big are the waves at Llanddwyn Island today (18 Sep):
- Morning surf: Morning surf (18 Sep, local time) - 3.5ft (1.1m), 5s period with SW 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), 7s period with SW swell.
The current surf forecast for Llanddwyn Island at 9AM is: 1.1m 5s primary swell from a Southwest direction and 0.4m 5s secondary swell from a Northwest direction (forecast issued at 12:00am September 18). The wind direction is predicted to be onshore.
| Time (BST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (18 Sep) | 3.5ft (1.1m) | 5s |
| Afternoon (18 Sep) | 7ft (2.1m) | 7s |
| Evening (18 Sep) | 7ft (2.1m) | 7s |
Table - waves today at Llanddwyn Island. (Swell directed towards the surf break)
Short Range ForecastLight rain (total 9mm), mostly falling 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 WSW by Sun afternoon). | ||||||||||||||||||||||||
Friday 18 | Saturday 19 | Sunday 20 | ||||||||||||||||||||||
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 | 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 6 | W 5 | W 5 | SW 5 | SW 6 | SW 7 | SW 7 | SW 7 | SW 7 | SW 7 | SW 7 | WSW 7 | WSW 7 | WSW 7 | SW 7 | WSW 4 | W 4 | W 5 | WNW 5 | SW 6 | SW 6 | SW 6 | SW 6 | SW 6 |
Wave Graph  | ||||||||||||||||||||||||
 kJ | 117 | 99 | 66 | 57 | 157 | 579 | 558 | 492 | 492 | 529 | 465 | 289 | 196 | 138 | 116 | 40 | 50 | 66 | 38 | 30 | 18 | 18 | 12 | 11 |
Wind (km/h) | ||||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | on | on | on | on | on | on | on | on | on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross | cross-on | cross-on | cross-on | cross-on |
High Tide | 2:09AM3.11m | 2:30PM3.01m | 3:16AM2.79m | 3:54PM2.78m | 5:10AM2.63m | 5:52PM2.79m | ||||||||||||||||||
Low Tide | 8:52AM1.36m | 9:24PM1.38m | 9:52AM1.62m | 10:46PM1.58m | 11:27AM1.71m | |||||||||||||||||||
 |  |  | | |  |  | | | | |  |  | | |  | | |  | | | | | | |
 | — | 6:54 | — | — | — | — | — | — | — | 6:56 | — | — | — | — | — | — | — | 6:58 | — | — | — | — | — | — |
 | — | — | — | — | — | — | 7:27 | — | — | — | — | — | — | — | 7:23 | — | — | — | — | — | — | — | 7:22 | — |
mm | — | — | — | — | — | 6 | 2 | — | — | — | — | 1 | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 14 | 14 | 13 | 14 | 15 | 14 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 17 | 15 | 14 | 13 | 13 | 12 | 12 | 13 | 13 | 13 |
Feels °C | 8 | 8 | 9 | 9 | 8 | 6 | 10 | 11 | 11 | 10 | 11 | 11 | 11 | 11 | 13 | 10 | 9 | 8 | 9 | 8 | 9 | 11 | 10 | 9 |
Swell 1 Height (m) Direction Period (s) | — | — | — | NW 5 | NW 5 | — | — | — | — | — | — | — | — | W 16 | — | W 15 | — | W 14 | SW 5 | SW 6 | SW 6 | NW 4 | SW 6 | NW 4 |
| kJ | — | — | — | 9 | 4 | — | — | — | — | — | — | — | — | 5 | — | 4 | — | 4 | 23 | 30 | 18 | 7 | 12 | 1 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | W 14 | W 14 | W 14 | W 14 | NW 4 | W 14 |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 4 | 4 | 4 | 4 | 3 | 4 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | W 14 | W 14 | W 14 | W 14 |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 4 | 4 | 4 | 4 |
Wind waves Height (m) Direction Period (s) | W 6 | W 5 | W 5 | SW 5 | SW 6 | SW 7 | SW 7 | SW 7 | SW 7 | SW 7 | SW 7 | WSW 7 | WSW 7 | WSW 7 | SW 7 | WSW 4 | W 4 | W 5 | WNW 5 | NW 5 | WNW 5 | SW 6 | — | SW 6 |
| kJ | 117 | 99 | 66 | 57 | 157 | 579 | 558 | 492 | 492 | 529 | 465 | 289 | 196 | 138 | 116 | 40 | 50 | 66 | 38 | 24 | 15 | 18 | — | 11 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 177 | 496 | 272 | 496 | 385 | 385 | 385 | 385 | 496 | 485 | 485 | 284 | 540 | 35 | 284 | 35 | 263 | 166 | 162 | 162 | 35 | 151 | 151 | 232 |
Best forecast wave conditions in Anglesy | ||||||||||||||||||||||||
Best forecast wave conditions in United Kingdom | ||||||||||||||||||||||||
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