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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 pm Tuesday 12 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)How big are the waves at Llanddwyn Island today?
The current surf forecast for Llanddwyn Island at 5PM is: 0.8m 5s primary swell from a West-northwest direction and 0.1m 8s secondary swell from a Southwest direction (forecast issued at 12:00pm May 12). The wind direction is predicted to be cross-onshore.
| Time (BST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (12 May) | 2ft (0.6m) | 3s |
| Afternoon (12 May) | 2.5ft (0.8m) | 5s |
| Evening (12 May) | 2.5ft (0.7m) | 3s |
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 9mm), mostly falling on Tue night. Very mild (max 12°C on Tue afternoon, min 8°C on Tue night). Winds decreasing (strong winds from the WNW on Tue night, light winds from the NNE by Thu night). | ||||||||||||||||||||||||
Tue 12 | Wednesday 13 | Thursday 14 | Fri 15 | |||||||||||||||||||||
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 | 1 AM | 4 AM | 7 AM | |
Swell Height Map |    |    |    |    | ||||||||||||||||||||
WNW 4 | NW 4 | WNW 5 | NW 5 | W 3 | W 5 | WNW 6 | WNW 7 | WNW 7 | NW 6 | NW 6 | NW 5 | SW 6 | NW 6 | NW 7 | NW 7 | NW 6 | SW 15 | W 15 | SW 14 | SW 14 | SW 14 | NW 7 | NW 6 | |
13 | 40 | 27 | 7 | 11 | 78 | 224 | 319 | 288 | 184 | 128 | 103 | 10 | 259 | 306 | 181 | 132 | 8 | 8 | 8 | 8 | 8 | 85 | 45 | |
Wind (km/h) | ||||||||||||||||||||||||
cross-on | cross | cross-on | cross-on | cross-on | cross-on | cross-on | cross | cross | cross | cross | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | |
High Tide | 7:00PM3.17m | 7:03AM3.52m | 7:41PM3.46m | 7:48AM3.79m | 8:21PM3.75m | |||||||||||||||||||
Low Tide | 1:04PM0.90m | 1:22AM1.11m | 1:55PM0.61m | 2:15AM0.82m | 2:43PM0.34m | 3:03AM0.52m | ||||||||||||||||||
 |  | | |  |  |  |  | | | |  | | |  | | | | | | | | | | |
 | 5:24 | — | — | — | — | — | 5:22 | — | — | — | — | — | — | — | 5:20 | — | — | — | — | — | — | — | 5:18 | — |
 | — | — | — | 9:04 | — | — | — | — | — | — | — | 9:05 | — | — | — | — | — | — | — | 9:07 | — | — | — | 9:08 |
— | — | — | — | — | — | 1 | 1 | 1 | — | 1 | 1 | — | — | — | 1 | 1 | 1 | 1 | — | — | — | — | — | |
Temp °C | 9 | 11 | 12 | 12 | 10 | 9 | 8 | 8 | 8 | 10 | 10 | 10 | 8 | 8 | 8 | 8 | 9 | 10 | 10 | 11 | 9 | 8 | 8 | 8 |
3 | 4 | 7 | 6 | 3 | 1 | -1 | -1 | -1 | 1 | 2 | 4 | 0 | 0 | 0 | 1 | 2 | 3 | 4 | 6 | 6 | 4 | 3 | 3 | |
Swell 1 Height (m) Direction Period (s) | SW 9 | SW 8 | SW 8 | NW 5 | SW 8 | SW 8 | — | — | SW 7 | SW 7 | SW 7 | SW 7 | SW 6 | WSW 6 | W 16 | W 16 | SW 15 | SW 15 | SW 14 | SW 6 | W 5 | SW 14 | SW 14 | W 14 |
 kJ | 3 | 3 | 3 | 7 | 3 | 3 | — | — | 22 | 23 | 23 | 12 | 10 | 4 | 5 | 5 | 9 | 8 | 8 | 1 | 1 | 8 | 8 | 4 |
Swell 2 Height (m) Direction Period (s) | — | W 18 | — | SW 8 | — | — | — | — | W 17 | WSW 5 | W 16 | W 16 | W 16 | W 16 | — | — | — | — | W 15 | SW 14 | SW 14 | — | W 6 | W 14 |
| kJ | — | 7 | — | 3 | — | — | — | — | 5 | 11 | 5 | 5 | 5 | 5 | — | — | — | — | 4 | 8 | 8 | — | 1 | 4 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | W 16 | — | — | — | — | — | — | — | — | — | — | — | W 14 | — | — |
| kJ | — | — | — | — | — | — | — | — | — | 5 | — | — | — | — | — | — | — | — | — | — | — | 4 | — | — |
Wind waves Height (m) Direction Period (s) | WNW 4 | NW 4 | WNW 5 | SW 4 | W 3 | W 5 | WNW 6 | WNW 7 | WNW 7 | NW 6 | NW 6 | NW 5 | NW 6 | NW 6 | NW 7 | NW 7 | NW 6 | NW 6 | NW 6 | NNW 6 | NNW 6 | NW 6 | NW 7 | NW 6 |
| kJ | 13 | 40 | 27 | 4 | 11 | 78 | 224 | 319 | 288 | 184 | 128 | 103 | 129 | 259 | 306 | 181 | 132 | 115 | 89 | 75 | 49 | 97 | 85 | 45 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 290 | 312 | 407 | 285 | 285 | 278 | 290 | 294 | 600 | 887 | 883 | 883 | 608 | 608 | 328 | 328 | 339 | 339 | 330 | 286 | 64 | 170 | 76 | 330 |
Best forecast wave conditions in Anglesy | ||||||||||||||||||||||||
Best forecast wave conditions in United Kingdom | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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