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Llanddwyn Island Surf Forecast
/ Wales – Anglesy (10 surf breaks) /
Surf Forecasts:
Llanddwyn Island surfForecast / Wales – Anglesy / UK
48hr Weather and Surf, issued 12 am Monday 11 May 2026 BSTForecast update in hr min s Forecast update imminent
Llanddwyn Island surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Llanddwyn Island sea temperature is
11.6° C
(Which is 1.4°C warmer than normal for this time of year)| Time (BST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (11 May) | 0.5ft (0.1m) | 9s |
| Afternoon (11 May) | 0.5ft (0.1m) | 9s |
| Evening (11 May) | 0.5ft (0.1m) | 8s |
Table - waves today at Llanddwyn Island. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastLight rain (total 6mm), mostly falling on Mon morning. Very mild (max 12°C on Tue afternoon, min 7°C on Mon night). Winds increasing (light winds from the N on Mon night, strong winds from the WNW by Tue night). | ||||||||||||||||||||||||
Monday 11 | Tuesday 12 | Wednesday 13 | ||||||||||||||||||||||
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 |    |    |    | |||||||||||||||||||||
NNW 3 | NW 3 | NW 4 | SW 9 | SW 9 | SW 8 | SW 8 | SW 8 | SW 8 | SW 8 | WNW 3 | WNW 4 | NW 4 | NW 5 | WNW 4 | W 18 | WNW 5 | W 6 | WNW 6 | WNW 6 | WNW 6 | WNW 6 | NW 5 | WSW 7 | |
0 | 0 | 25 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 13 | 34 | 24 | 12 | 9 | 54 | 157 | 240 | 263 | 190 | 119 | 52 | 17 | |
Wind (km/h) | ||||||||||||||||||||||||
cross | cross | cross | cross-off | off | cross-off | cross-off | cross-off | cross-on | cross-on | cross-on | cross | cross | cross-on | on | cross-on | cross-on | cross-on | cross-on | cross | cross | cross | cross-off | cross-off | |
High Tide | 5:18AM3.10m | 6:13PM2.91m | 6:16AM3.28m | 7:00PM3.17m | 7:03AM3.52m | 7:41PM3.46m | ||||||||||||||||||
Low Tide | 11:13PM1.47m | 12:04PM1.15m | 00:22AM1.35m | 1:04PM0.90m | 1:22AM1.11m | 1:55PM0.61m | ||||||||||||||||||
 |  |  |  |  | | | | | | | | | | |  | |  |  | | | | | | |
 | — | 5:26 | — | — | — | — | — | — | — | 5:24 | — | — | — | — | — | — | — | 5:22 | — | — | — | — | — | — |
 | — | — | — | — | — | — | 9:01 | — | — | — | — | — | — | — | 9:04 | — | — | — | — | — | — | — | 9:05 | — |
— | — | — | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 1 | 1 | 1 | 1 | — | — | |
Temp °C | 8 | 9 | 9 | 9 | 9 | 9 | 8 | 7 | 7 | 8 | 8 | 10 | 10 | 12 | 12 | 11 | 9 | 9 | 8 | 9 | 10 | 10 | 10 | 9 |
5 | 4 | 3 | 4 | 3 | 3 | 3 | 4 | 4 | 4 | 3 | 4 | 4 | 7 | 7 | 4 | 1 | 1 | -1 | 0 | 2 | 3 | 3 | 1 | |
Swell 1 Height (m) Direction Period (s) | — | — | SW 9 | SW 9 | SW 9 | SW 8 | SW 8 | NW 4 | — | SW 8 | SW 9 | SW 9 | SW 8 | SW 8 | NNW 5 | SW 8 | SW 8 | SW 8 | — | W 16 | W 16 | W 16 | WSW 7 | WSW 7 |
 kJ | — | — | 3 | 3 | 3 | 3 | 3 | 3 | — | 3 | 3 | 3 | 3 | 3 | 5 | 3 | 3 | 3 | — | 5 | 5 | 5 | 29 | 17 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | SW 8 | SW 8 | — | — | — | W 18 | — | SW 8 | W 18 | — | — | — | — | — | — | W 16 | W 16 |
| kJ | — | — | — | — | — | — | — | 3 | 3 | — | — | — | 7 | — | 3 | 6 | — | — | — | — | — | — | 5 | 5 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | N 5 | — | — | — | — | — | W 18 | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | 1 | — | — | — | — | — | 6 | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | NNW 3 | NW 3 | NW 4 | NW 5 | NW 5 | NNW 4 | NNW 4 | NNW 4 | — | — | WNW 3 | WNW 4 | NW 4 | NW 5 | WNW 4 | WNW 3 | WNW 5 | W 6 | WNW 6 | WNW 6 | WNW 6 | WNW 6 | NW 5 | NW 5 |
| kJ | 1 | 5 | 25 | 47 | 30 | 11 | 7 | 14 | — | — | 3 | 13 | 34 | 24 | 12 | 9 | 54 | 157 | 240 | 263 | 190 | 119 | 52 | 69 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 232 | 261 | 306 | 269 | 64 | 286 | 286 | 150 | 222 | 213 | 222 | 293 | 407 | 285 | 289 | 285 | 287 | 291 | 600 | 612 | 928 | 1148 | 868 | 333 |
Best forecast wave conditions in Anglesy | ||||||||||||||||||||||||
Best forecast wave conditions in United Kingdom | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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