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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 Sunday 31 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
14.4° C
(Which is 2.8°C warmer than normal for this time of year)How big are the waves at Llanddwyn Island today (31 May):
- Morning surf: Morning surf (31 May, local time) - 1.5ft (0.4m), 12s period with SW swell.
- Afternoon surf: Afternoon surf (31 May, local time) - 2ft (0.6m), 12s period with WSW swell.
- Evening surf: Evening surf (31 May, local time) - 1.5ft (0.4m), 11s period with SW swell.
The current surf forecast for Llanddwyn Island at 5PM is: 0.4m 12s primary swell from a Southwest direction and 0.6m 5s secondary swell from a Southwest direction (forecast issued at 12:00pm May 31). The wind direction is predicted to be cross-onshore.
| Time (BST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (31 May) | 1.5ft (0.4m) | 12s |
| Afternoon (31 May) | 2ft (0.6m) | 12s |
| Evening (31 May) | 1.5ft (0.4m) | 11s |
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 17mm), heaviest on Mon afternoon. Very mild (max 15°C on Sun afternoon, min 12°C on Tue night). Winds increasing (light winds from the SW on Mon night, fresh winds from the S by Tue night). | ||||||||||||||||||||||||
Sun 31 | Monday 1 | Tuesday 2 | Wed 3 | |||||||||||||||||||||
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 |    |    |    |    | ||||||||||||||||||||
SW 12 | WSW 12 | SW 12 | SW 11 | SW 11 | SW 5 | SW 5 | SSW 5 | SSW 5 | SSW 5 | SW 6 | SW 6 | SW 6 | SW 6 | SW 6 | SW 6 | SW 6 | SW 6 | SW 6 | SW 6 | SW 9 | SW 9 | SW 8 | SW 5 | |
36 | 90 | 35 | 33 | 33 | 58 | 69 | 61 | 72 | 75 | 97 | 92 | 72 | 56 | 44 | 32 | 29 | 23 | 23 | 38 | 65 | 115 | 118 | 71 | |
Wind (km/h) | ||||||||||||||||||||||||
cross-on | on | on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | on | cross-on | cross | cross-on | on | cross-on | cross-on | on | cross-on | cross-on | |
High Tide | 10:03AM3.65m | 10:18PM3.78m | 10:40AM3.62m | 10:54PM3.79m | 11:17AM3.55m | 11:31PM3.75m | ||||||||||||||||||
Low Tide | 4:50PM0.60m | 5:12AM0.49m | 5:25PM0.63m | 5:48AM0.50m | 6:00PM0.69m | 6:26AM0.57m | ||||||||||||||||||
 | |  | |  |  |  |  | | |  | | | | | | |  | | |  | | | | |
 | 4:58 | — | — | — | — | — | 4:58 | — | — | — | — | — | — | — | 4:56 | — | — | — | — | — | — | — | 4:56 | — |
 | — | — | — | 9:31 | — | — | — | — | — | — | — | 9:32 | — | — | — | — | — | — | — | 9:34 | — | — | — | 9:35 |
— | — | — | — | — | — | 1 | 1 | 3 | 3 | 6 | 1 | 1 | — | 1 | — | — | — | — | — | — | — | — | — | |
Temp °C | 14 | 14 | 15 | 14 | 13 | 13 | 13 | 13 | 13 | 14 | 14 | 14 | 13 | 13 | 13 | 13 | 13 | 14 | 15 | 15 | 14 | 13 | 12 | 12 |
11 | 11 | 12 | 11 | 10 | 9 | 9 | 9 | 10 | 11 | 10 | 11 | 10 | 11 | 13 | 12 | 11 | 12 | 13 | 13 | 12 | 11 | 9 | 6 | |
Swell 1 Height (m) Direction Period (s) | SW 5 | SW 12 | SW 12 | SW 11 | SW 11 | WSW 11 | WSW 11 | WSW 11 | WSW 11 | WSW 11 | WSW 10 | SW 10 | SW 10 | SW 10 | SW 6 | SW 6 | SW 6 | SW 6 | WNW 3 | — | SW 9 | W 16 | WNW 4 | NW 4 |
 kJ | 19 | 35 | 35 | 33 | 33 | 25 | 24 | 12 | 12 | 11 | 11 | 4 | 4 | 4 | 44 | 32 | 29 | 23 | 1 | — | 65 | 5 | 1 | 1 |
Swell 2 Height (m) Direction Period (s) | SW 12 | WSW 12 | — | — | — | — | — | SW 14 | SW 14 | SW 14 | SW 14 | SW 14 | SW 14 | SW 14 | SW 13 | W 13 | W 13 | W 13 | SW 13 | — | — | — | — | — |
| kJ | 36 | 90 | — | — | — | — | — | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 7 | 3 | 3 | 3 | 7 | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | W 14 | W 14 | — | W 10 | SW 13 | SW 13 | SW 13 | W 13 | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | 4 | 4 | — | 2 | 7 | 7 | 7 | 3 | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | SW 6 | SW 6 | SW 4 | SW 5 | SW 5 | SW 5 | SSW 5 | SSW 5 | SSW 5 | SW 6 | SW 6 | SW 6 | SW 6 | — | — | — | WNW 3 | SW 6 | SW 6 | — | SW 9 | SW 8 | SW 5 |
| kJ | — | 24 | 20 | 12 | 31 | 58 | 69 | 61 | 72 | 75 | 97 | 92 | 72 | 56 | — | — | — | 1 | 23 | 38 | — | 115 | 118 | 71 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 35 | 310 | 310 | 269 | 95 | 95 | 95 | 187 | 216 | 216 | 308 | 313 | 164 | 144 | 35 | 35 | 35 | 284 | 284 | 284 | 35 | 35 | 270 | 311 |
Best forecast wave conditions in Anglesy | ||||||||||||||||||||||||
Best forecast wave conditions in United Kingdom | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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