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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 19 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 slightly warmer than usual)How big are the waves at Llanddwyn Island today?
The current surf forecast for Llanddwyn Island at 8PM is: 2.1m 7s primary swell from a Southwest direction (forecast issued at 12:00pm May 19). The wind direction is predicted to be onshore.
| Time (BST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (19 May) | 5ft (1.5m) | 7s |
| Afternoon (19 May) | 5.5ft (1.7m) | 7s |
| Evening (19 May) | 7ft (2.1m) | 7s |
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 5mm), mostly falling on Tue morning. Very mild (max 17°C on Thu night, min 11°C on Tue afternoon). Winds decreasing (fresh winds from the SSW on Tue night, light winds from the SSE by Thu night). | ||||||||||||||||||||||||
Tue 19 | Wednesday 20 | Thursday 21 | Fri 22 | |||||||||||||||||||||
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 |    |    |    |    | ||||||||||||||||||||
SSW 7 | SW 7 | SW 7 | SW 7 | SW 8 | SW 8 | SW 9 | SW 9 | SW 9 | SW 6 | SW 6 | SW 6 | SW 6 | SW 6 | SSW 5 | SW 6 | SW 6 | SW 6 | SW 6 | SW 6 | SW 7 | SW 7 | SW 9 | SSW 5 | |
237 | 271 | 287 | 341 | 531 | 575 | 514 | 460 | 342 | 167 | 193 | 182 | 167 | 128 | 94 | 131 | 135 | 105 | 98 | 81 | 63 | 62 | 83 | 35 | |
Wind (km/h) | ||||||||||||||||||||||||
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 | cross-on | cross-on | cross-on | cross | cross | cross-on | cross-on | |
High Tide | 11:39AM4.11m | 11:57PM4.21m | 12:31PM3.85m | 00:50AM4.04m | 1:31PM3.54m | 1:49AM3.84m | ||||||||||||||||||
Low Tide | 6:36PM0.21m | 7:05AM-0.01m | 7:26PM0.43m | 8:01AM0.17m | 8:20PM0.68m | |||||||||||||||||||
 |  |  |  |  |  |  | | |  | | |  |  | | | | | | | | | | | |
 | 5:13 | — | — | — | — | — | 5:11 | — | — | — | — | — | — | — | 5:09 | — | — | — | — | — | — | — | 5:09 | — |
 | — | — | — | 9:15 | — | — | — | — | — | — | — | 9:16 | — | — | — | — | — | — | — | 9:17 | — | — | — | 9:20 |
1 | 2 | — | — | 1 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 12 | 12 | 13 | 11 | 11 | 11 | 11 | 11 | 12 | 13 | 13 | 12 | 12 | 12 | 13 | 13 | 14 | 15 | 16 | 16 | 16 | 16 | 17 | 17 |
6 | 6 | 7 | 4 | 4 | 4 | 5 | 5 | 6 | 7 | 7 | 7 | 8 | 8 | 9 | 8 | 9 | 10 | 11 | 13 | 14 | 14 | 14 | 14 | |
Swell 1 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | WSW 9 | WSW 8 | SW 7 | — | W 15 | — | W 15 | W 15 | SW 7 | SW 7 | SW 9 | WSW 9 |
 kJ | — | — | — | — | — | — | — | — | — | — | — | — | 58 | 47 | 44 | — | 5 | — | 4 | 4 | 63 | 62 | 83 | 35 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | SW 6 | — | — | — | — | W 15 | W 15 | W 15 | W 15 | W 14 |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 2 | — | — | — | — | 4 | 4 | 4 | 4 | 4 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | SSW 7 | SW 7 | SW 7 | SW 7 | SW 8 | SW 8 | SW 9 | SW 9 | SW 9 | SW 6 | SW 6 | SW 6 | SW 6 | SW 6 | SSW 5 | SW 6 | SW 6 | SW 6 | SW 6 | SW 6 | — | ESE 2 | SE 3 | SSW 5 |
| kJ | 237 | 271 | 287 | 341 | 531 | 575 | 514 | 460 | 342 | 167 | 193 | 182 | 167 | 128 | 94 | 131 | 135 | 105 | 98 | 81 | — | 1 | 2 | 27 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 326 | 311 | 305 | 270 | 269 | 267 | 272 | 267 | 327 | 304 | 255 | 254 | 78 | 95 | 95 | 185 | 187 | 174 | 172 | 35 | 38 | 38 | 108 | 38 |
Best forecast wave conditions in Anglesy | ||||||||||||||||||||||||
Best forecast wave conditions in United Kingdom | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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