Surf Forecasts:
How big are the waves at Llanddwyn Island today (17 Aug):
- Morning surf: Morning surf (17 Aug, local time) - 1.5ft (0.4m), 5s period with SW swell.
- Afternoon surf: Afternoon surf (17 Aug, local time) - 1.5ft (0.4m), 5s period with SW swell.
- Evening surf: Evening surf (17 Aug, local time) - 2ft (0.6m), 4s period with SW swell.
The current surf forecast for Llanddwyn Island at 1PM is: 0.4m 5s primary swell from a Southwest direction and 0.2m 3s secondary swell from a West-northwest direction (forecast issued at 06:00am August 17). The wind direction is predicted to be onshore.
| Time (BST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (17 Aug) | 1.5ft (0.4m) | 5s |
| Afternoon (17 Aug) | 1.5ft (0.4m) | 5s |
| Evening (17 Aug) | 2ft (0.6m) | 4s |
Table - waves today at Llanddwyn Island. (Swell directed towards the surf break)
Short Range ForecastLight rain (total 9mm), mostly falling on Mon night. Very mild (max 18°C on Tue afternoon, min 13°C on Tue night). Winds increasing (light winds from the WSW on Mon morning, fresh winds from the SW by Wed morning). | |||||||||||||||||||||||
Monday 17 | Tuesday 18 | Wednesday 19 | |||||||||||||||||||||
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) | SW 4 | SW 4 | SW 5 | SW 5 | SW 5 | SW 5 | SW 4 | SW 5 | WSW 5 | SW 5 | WSW 4 | WSW 4 | SW 6 | SW 6 | SW 5 | WSW 4 | WSW 4 | WSW 5 | WSW 5 | WSW 5 | SW 6 | SW 6 | SW 6 |
Wave Graph  | |||||||||||||||||||||||
 kJ | 5 | 10 | 8 | 9 | 7 | 4 | 10 | 38 | 29 | 22 | 29 | 26 | 27 | 15 | 14 | 17 | 43 | 64 | 74 | 75 | 120 | 135 | 109 |
Wind (km/h) | |||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross | cross-on | on | cross-on | cross-on | cross-on | on | cross-on | cross | cross-on | cross-on | on | on | on | cross-on | cross-on | on | on | on | on | on | cross-on |
High Tide | 1:04PM3.73m | 1:21AM3.95m | 1:44PM3.51m | 2:05AM3.58m | 2:29PM3.25m | ||||||||||||||||||
Low Tide | 7:34AM0.15m | 7:45PM0.46m | 8:13AM0.53m | 8:25PM0.77m | 8:54AM0.92m | 9:10PM1.10m | |||||||||||||||||
 |  | |  | | | |  |  | | | | |  |  | | | | | |  |  |  | |
 | 6:00 | — | — | — | — | — | — | — | 6:01 | — | — | — | — | — | — | — | 6:03 | — | — | — | — | — | — |
 | — | — | — | — | — | 8:40 | — | — | — | — | — | — | — | 8:38 | — | — | — | — | — | — | — | 8:37 | — |
mm | — | — | — | — | — | — | — | 3 | — | — | — | — | — | — | — | — | — | — | — | — | 2 | 1 | 1 |
Temp °C | 17 | 16 | 16 | 16 | 16 | 17 | 16 | 17 | 17 | 16 | 16 | 16 | 17 | 18 | 17 | 15 | 14 | 13 | 14 | 16 | 15 | 16 | 15 |
Feels °C | 18 | 16 | 16 | 17 | 15 | 15 | 12 | 16 | 15 | 13 | 13 | 12 | 14 | 16 | 15 | 10 | 9 | 8 | 9 | 11 | 11 | 13 | 12 |
Swell 1 Height (m) Direction Period (s) | SW 4 | SW 4 | SW 5 | SW 5 | SW 5 | SW 5 | — | — | — | SW 5 | W 16 | W 16 | NW 4 | NW 4 | SW 5 | — | — | — | — | — | — | — | — |
| kJ | 5 | 10 | 8 | 9 | 7 | 4 | — | — | — | 22 | 5 | 5 | 4 | 3 | 14 | — | — | — | — | — | — | — | — |
Swell 2 Height (m) Direction Period (s) | W 7 | — | — | WNW 3 | WNW 3 | WNW 3 | — | — | — | — | — | — | W 16 | W 16 | — | — | — | — | — | — | — | — | — |
| kJ | 1 | — | — | 1 | 1 | 1 | — | — | — | — | — | — | 5 | 5 | — | — | — | — | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | WNW 2 | WNW 3 | — | — | — | SW 4 | SW 5 | WSW 5 | WNW 4 | WSW 4 | WSW 4 | SW 6 | SW 6 | NW 4 | WSW 4 | WSW 4 | WSW 5 | WSW 5 | WSW 5 | SW 6 | SW 6 | SW 6 |
| kJ | — | 1 | 1 | — | — | — | 10 | 38 | 29 | 6 | 29 | 26 | 27 | 15 | 2 | 17 | 43 | 64 | 74 | 75 | 120 | 135 | 109 |
Nearest Offshore or Glassy | |||||||||||||||||||||||
Distance (km) | 269 | 269 | 269 | 269 | 308 | 313 | 397 | 532 | 397 | 222 | 35 | 605 | 528 | 601 | 272 | 272 | 570 | 267 | 272 | 272 | 255 | 255 | 35 |
Best forecast wave conditions in Anglesy | |||||||||||||||||||||||
Best forecast wave conditions in United Kingdom | |||||||||||||||||||||||
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