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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 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
13.5° C
(Which is 1.9°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) - 1.5ft (0.4m), 12s period with SW 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 4AM is: 0.3m 12s primary swell from a West-southwest direction and 0.8m 5s secondary swell from a Southwest direction (forecast issued at 12:00am May 31). The wind direction is predicted to be onshore.
| Time (BST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (31 May) | 1.5ft (0.4m) | 12s |
| Afternoon (31 May) | 1.5ft (0.4m) | 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 ForecastHeavy rain (total 30mm), heaviest during Mon afternoon. Very mild (max 15°C on Sun afternoon, min 13°C on Sat night). Wind will be generally light. | ||||||||||||||||||||||||
Sunday 31 | Monday 1 | Tuesday 2 | ||||||||||||||||||||||
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 |    |    |    | |||||||||||||||||||||
SW 4 | SW 5 | SW 12 | SW 12 | SW 12 | SW 12 | SW 11 | SW 11 | SW 5 | SW 5 | SSW 5 | SSW 5 | SSW 5 | SSW 5 | SSW 5 | SW 6 | SW 6 | SW 5 | SW 6 | SW 6 | SW 6 | SW 7 | SW 7 | SW 7 | |
24 | 29 | 37 | 36 | 35 | 35 | 33 | 33 | 42 | 60 | 59 | 69 | 72 | 54 | 97 | 72 | 69 | 54 | 67 | 33 | 51 | 45 | 49 | 59 | |
Wind (km/h) | ||||||||||||||||||||||||
cross-on | on | cross-on | 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 | on | cross-on | cross-on | on | on | cross-on | |
High Tide | 10:03AM3.65m | 10:18PM3.78m | 10:40AM3.62m | 10:54PM3.79m | 11:17AM3.55m | |||||||||||||||||||
Low Tide | 4:35AM0.52m | 4:50PM0.60m | 5:12AM0.49m | 5:25PM0.63m | 5:48AM0.50m | 6:00PM0.69m | ||||||||||||||||||
 |  |  |  | | | |  | |  |  | | | |  | | | | | |  |  | |  | |
 | — | 4:58 | — | — | — | — | — | — | — | 4:58 | — | — | — | — | — | — | — | 4:56 | — | — | — | — | — | — |
 | — | — | — | — | — | — | 9:31 | — | — | — | — | — | — | — | 9:32 | — | — | — | — | — | — | — | 9:34 | — |
1 | 1 | — | — | — | — | — | — | — | — | 2 | 4 | 4 | 4 | 7 | 4 | 1 | 1 | — | — | 1 | — | — | — | |
Temp °C | 13 | 14 | 13 | 13 | 14 | 15 | 14 | 13 | 13 | 13 | 13 | 13 | 13 | 14 | 14 | 14 | 13 | 13 | 13 | 13 | 14 | 15 | 15 | 14 |
10 | 12 | 12 | 11 | 11 | 12 | 11 | 10 | 9 | 9 | 9 | 10 | 10 | 11 | 11 | 12 | 10 | 12 | 12 | 11 | 12 | 12 | 12 | 11 | |
Swell 1 Height (m) Direction Period (s) | WSW 12 | WSW 12 | SW 5 | SW 5 | SW 6 | SW 12 | SW 11 | SW 11 | WSW 11 | WSW 11 | WSW 11 | WSW 11 | WSW 11 | WSW 11 | WSW 10 | SW 10 | W 10 | SW 13 | SW 5 | SW 6 | SW 6 | WNW 4 | SW 7 | SW 7 |
 kJ | 15 | 29 | 18 | 20 | 20 | 35 | 33 | 33 | 25 | 24 | 12 | 12 | 11 | 11 | 10 | 4 | 2 | 7 | 18 | 33 | 51 | 1 | 49 | 59 |
Swell 2 Height (m) Direction Period (s) | SW 7 | — | SW 12 | SW 12 | SW 12 | — | — | SW 7 | — | WSW 11 | SW 14 | SW 14 | SW 14 | SW 14 | SW 14 | SW 14 | SW 14 | W 10 | SW 6 | SW 13 | W 13 | W 13 | WNW 4 | — |
| kJ | 2 | — | 37 | 36 | 35 | — | — | 2 | — | 23 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 2 | 19 | 7 | 3 | 3 | 1 | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | W 14 | — | — | — | — | — | W 13 | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | 4 | — | — | — | — | — | 3 | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | SW 4 | SW 5 | — | — | — | SW 6 | SW 5 | SW 5 | SW 5 | SW 5 | SSW 5 | SSW 5 | SSW 5 | SSW 5 | SSW 5 | SW 6 | SW 6 | SW 5 | SW 6 | — | — | SW 7 | NNW 4 | — |
| kJ | 24 | 25 | — | — | — | 20 | 14 | 26 | 42 | 60 | 59 | 69 | 72 | 54 | 97 | 72 | 69 | 54 | 67 | — | — | 45 | 1 | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 95 | 159 | 167 | 35 | 35 | 310 | 269 | 95 | 95 | 62 | 216 | 187 | 216 | 216 | 239 | 281 | 164 | 108 | 222 | 35 | 35 | 284 | 284 | 35 |
Best forecast wave conditions in Anglesy | ||||||||||||||||||||||||
Best forecast wave conditions in United Kingdom | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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