Surf Forecasts:
How big are the waves at Llanddwyn Island today (17 Sep):
- Morning surf: Morning surf (17 Sep, local time) - 5ft (1.5m), 6s period with W swell.
- Afternoon surf: Afternoon surf (17 Sep, local time) - 5ft (1.5m), 6s period with W swell.
- Evening surf: Evening surf (17 Sep, local time) - 4.5ft (1.4m), 6s period with W swell.
The current surf forecast for Llanddwyn Island at 5AM is: 1.7m 6s primary swell from a West-southwest direction (forecast issued at 12:00am September 17). The wind direction is predicted to be cross-onshore.
| Time (BST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (17 Sep) | 5ft (1.5m) | 6s |
| Afternoon (17 Sep) | 5ft (1.5m) | 6s |
| Evening (17 Sep) | 4.5ft (1.4m) | 6s |
Table - waves today at Llanddwyn Island. (Swell directed towards the surf break)
Short Range ForecastModerate rain (total 15mm), heaviest on Fri afternoon. Very mild (max 17°C on Fri afternoon, min 13°C on Wed night). Winds decreasing (strong winds from the SW on Fri afternoon, moderate winds from the W by Sat afternoon). | ||||||||||||||||||||||||
Thursday 17 | Friday 18 | Saturday 19 | ||||||||||||||||||||||
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) | SW 6 | WSW 6 | WSW 7 | W 6 | W 6 | W 6 | W 6 | W 6 | W 6 | W 5 | WSW 5 | WSW 5 | SW 6 | SW 7 | SW 7 | SW 7 | SW 7 | SW 7 | SW 7 | SW 7 | WSW 7 | WSW 7 | WSW 7 | WSW 7 |
Wave Graph  | ||||||||||||||||||||||||
 kJ | 171 | 232 | 206 | 123 | 136 | 136 | 117 | 134 | 121 | 82 | 66 | 67 | 185 | 527 | 529 | 452 | 452 | 492 | 529 | 503 | 243 | 164 | 142 | 121 |
Wind (km/h) | ||||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | on | on | on | on | on | on | on | on | on | cross-on | cross-on | cross-on | cross-on | cross-on |
High Tide | 1:24AM3.48m | 1:40PM3.31m | 2:09AM3.11m | 2:30PM3.01m | 3:16AM2.79m | 3:54PM2.78m | ||||||||||||||||||
Low Tide | 8:09AM1.03m | 8:30PM1.08m | 8:52AM1.36m | 9:24PM1.38m | 9:52AM1.62m | |||||||||||||||||||
 |  |  | |  |  | |  | |  | | |  |  | |  | | | | | | | | | |
 | — | 6:52 | — | — | — | — | — | — | — | 6:54 | — | — | — | — | — | — | — | 6:56 | — | — | — | — | — | — |
 | — | — | — | — | — | — | 7:29 | — | — | — | — | — | — | — | 7:27 | — | — | — | — | — | — | — | 7:23 | — |
mm | 2 | 2 | — | — | — | — | — | — | — | — | — | — | 1 | 9 | 1 | — | — | — | — | — | — | — | — | — |
Temp °C | 14 | 15 | 13 | 14 | 15 | 15 | 15 | 14 | 13 | 14 | 13 | 14 | 14 | 15 | 17 | 16 | 16 | 16 | 17 | 17 | 16 | 17 | 16 | 15 |
Feels °C | 8 | 10 | 8 | 8 | 8 | 9 | 10 | 8 | 7 | 9 | 9 | 9 | 7 | 8 | 13 | 11 | 11 | 11 | 13 | 13 | 11 | 12 | 12 | 11 |
Swell 1 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | NW 5 | NW 5 | — | — | — | — | — | — | — | W 16 | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | 6 | 4 | — | — | — | — | — | — | — | 5 | — | — | — |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | SW 6 | WSW 6 | WSW 7 | W 6 | W 6 | W 6 | W 6 | W 6 | W 6 | W 5 | WSW 5 | WSW 5 | SW 6 | SW 7 | SW 7 | SW 7 | SW 7 | SW 7 | SW 7 | SW 7 | WSW 7 | WSW 7 | WSW 7 | WSW 7 |
| kJ | 171 | 232 | 206 | 123 | 136 | 136 | 117 | 134 | 121 | 82 | 66 | 67 | 185 | 527 | 529 | 452 | 452 | 492 | 529 | 503 | 243 | 164 | 142 | 121 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 286 | 284 | 278 | 293 | 532 | 532 | 532 | 328 | 177 | 496 | 302 | 299 | 540 | 267 | 540 | 385 | 496 | 496 | 485 | 284 | 540 | 284 | 35 | 35 |
Best forecast wave conditions in Anglesy | ||||||||||||||||||||||||
Best forecast wave conditions in United Kingdom | ||||||||||||||||||||||||
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