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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 Wednesday 13 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 7AM is: 1.9m 6s primary swell from a West-northwest direction (forecast issued at 12:00am May 13). The wind direction is predicted to be cross-shore.
| Time (BST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (13 May) | 6ft (1.9m) | 6s |
| Afternoon (13 May) | 4.5ft (1.3m) | 6s |
| Evening (13 May) | 1.5ft (0.4m) | 7s |
Table - waves today at Llanddwyn Island. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastModerate rain (total 11mm), heaviest on Tue night. Very mild (max 11°C on Tue night, min 8°C on Tue night). Winds decreasing (strong winds from the WNW on Tue night, light winds from the N by Thu night). | ||||||||||||||||||||||||
Wednesday 13 | Thursday 14 | Friday 15 | ||||||||||||||||||||||
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 |    |    |    | |||||||||||||||||||||
W 5 | WNW 6 | WNW 6 | WNW 7 | NW 6 | NW 6 | NW 5 | W 16 | NW 6 | NW 7 | NW 7 | NW 6 | NW 6 | SW 14 | SW 14 | NW 6 | NW 6 | W 14 | W 14 | W 14 | W 14 | W 14 | W 13 | W 13 | |
78 | 200 | 300 | 304 | 216 | 103 | 86 | 5 | 259 | 275 | 207 | 132 | 100 | 8 | 8 | 54 | 30 | 8 | 4 | 4 | 4 | 4 | 4 | 3 | |
Wind (km/h) | ||||||||||||||||||||||||
cross-on | cross-on | 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 | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | |
High Tide | 7:03AM3.52m | 7:41PM3.46m | 7:48AM3.79m | 8:21PM3.75m | 8:32AM4.03m | 9:00PM4.00m | ||||||||||||||||||
Low Tide | 1:22AM1.11m | 1:55PM0.61m | 2:15AM0.82m | 2:43PM0.34m | 3:03AM0.52m | 3:29PM0.12m | ||||||||||||||||||
 |  |  | |  |  | |  | | | | | | | |  | | | | | | | | | |
 | — | 5:22 | — | — | — | — | — | — | — | 5:20 | — | — | — | — | — | — | — | 5:18 | — | — | — | — | — | — |
 | — | — | — | — | — | — | 9:05 | — | — | — | — | — | — | — | 9:07 | — | — | — | — | — | — | — | 9:08 | — |
1 | 1 | 1 | 1 | 1 | — | 1 | — | — | — | 1 | 1 | 1 | 1 | 1 | — | — | — | — | — | — | — | — | — | |
Temp °C | 9 | 8 | 8 | 8 | 10 | 11 | 10 | 9 | 8 | 8 | 8 | 9 | 9 | 10 | 10 | 8 | 8 | 8 | 8 | 9 | 10 | 10 | 10 | 8 |
1 | -1 | -1 | -1 | 2 | 4 | 4 | 1 | -1 | 0 | 1 | 2 | 2 | 3 | 5 | 4 | 5 | 3 | 2 | 3 | 4 | 4 | 5 | 4 | |
Swell 1 Height (m) Direction Period (s) | SW 8 | — | — | WSW 7 | WSW 7 | WSW 7 | SW 7 | WSW 6 | SW 6 | W 16 | W 16 | SW 15 | SW 15 | SW 6 | SW 14 | SW 5 | NW 6 | W 14 | W 14 | W 14 | W 14 | W 14 | W 13 | W 13 |
 kJ | 3 | — | — | 29 | 32 | 43 | 12 | 4 | 2 | 5 | 5 | 9 | 8 | 1 | 8 | 1 | 30 | 4 | 4 | 4 | 4 | 4 | 4 | 3 |
Swell 2 Height (m) Direction Period (s) | — | — | — | W 17 | W 16 | W 16 | W 16 | W 16 | W 16 | — | — | — | — | SW 14 | W 6 | SW 14 | — | SW 14 | W 6 | W 14 | W 6 | W 6 | W 6 | — |
| kJ | — | — | — | 5 | 5 | 5 | 5 | 5 | 5 | — | — | — | — | 8 | 1 | 8 | — | 8 | 1 | 4 | 1 | 1 | 1 | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | SW 6 | SW 14 | W 14 | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 8 | 4 | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | W 5 | WNW 6 | WNW 6 | WNW 7 | NW 6 | NW 6 | NW 5 | NW 6 | NW 6 | NW 7 | NW 7 | NW 6 | NW 6 | NW 5 | NW 5 | NW 6 | — | NNW 6 | NW 6 | NNW 6 | NW 6 | NW 5 | NNW 5 | NNW 5 |
| kJ | 78 | 200 | 300 | 304 | 216 | 103 | 86 | 115 | 259 | 275 | 207 | 132 | 100 | 55 | 45 | 54 | — | 20 | 64 | 65 | 44 | 38 | 21 | 10 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 278 | 287 | 294 | 600 | 924 | 887 | 736 | 608 | 608 | 328 | 597 | 1060 | 341 | 395 | 286 | 6 | 203 | 170 | 330 | 330 | 330 | 286 | 286 | 49 |
Best forecast wave conditions in Anglesy | ||||||||||||||||||||||||
Best forecast wave conditions in United Kingdom | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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