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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 Saturday 23 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
12.0° C
(Which is 1.0°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 4AM is: 0.8m 10s primary swell from a Southwest direction (forecast issued at 12:00am May 23). The wind direction is predicted to be cross-onshore.
| Time (BST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (23 May) | 2.5ft (0.7m) | 10s |
| Afternoon (23 May) | 1.5ft (0.4m) | 10s |
| Evening (23 May) | 1.5ft (0.4m) | 9s |
Table - waves today at Llanddwyn Island. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastMostly dry. Warm (max 21°C on Mon morning, min 12°C on Fri night). Wind will be generally light. | ||||||||||||||||||||||||
Saturday 23 | Sunday 24 | Monday 25 | ||||||||||||||||||||||
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 10 | SW 10 | SW 10 | SW 10 | SW 10 | SW 10 | SW 9 | SW 9 | SW 9 | SW 9 | SW 8 | SW 8 | SW 8 | SW 8 | SW 8 | SW 8 | SW 8 | SW 8 | SW 8 | WSW 8 | WSW 7 | W 13 | W 13 | W 13 | |
144 | 117 | 98 | 98 | 76 | 23 | 21 | 13 | 13 | 12 | 11 | 11 | 11 | 10 | 10 | 10 | 10 | 10 | 9 | 6 | 5 | 3 | 3 | 3 | |
Wind (km/h) | ||||||||||||||||||||||||
cross-on | cross-on | cross-on | cross-on | on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | on | cross-on | cross-on | cross-on | cross-on | glassy | glassy | glassy | cross | cross-off | cross-off | off | |
High Tide | 2:59AM3.64m | 4:04PM3.10m | 4:17AM3.52m | 5:24PM3.08m | 5:30AM3.48m | 6:26PM3.16m | ||||||||||||||||||
Low Tide | 10:05AM0.59m | 10:24PM1.08m | 11:14AM0.71m | 11:35PM1.14m | 12:22PM0.73m | |||||||||||||||||||
 | |  |  |  | | |  | | | | | | | | | | | | | | | | | |
 | — | 5:07 | — | — | — | — | — | — | — | 5:05 | — | — | — | — | — | — | — | 5:05 | — | — | — | — | — | — |
 | — | — | — | — | — | — | 9:21 | — | — | — | — | — | — | — | 9:22 | — | — | — | — | — | — | — | 9:23 | — |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 13 | 13 | 12 | 14 | 15 | 15 | 14 | 13 | 13 | 12 | 12 | 14 | 15 | 17 | 17 | 18 | 18 | 18 | 18 | 19 | 21 | 21 | 21 | 20 |
11 | 11 | 10 | 11 | 12 | 11 | 11 | 10 | 10 | 9 | 10 | 11 | 12 | 14 | 14 | 15 | 16 | 16 | 16 | 18 | 20 | 20 | 20 | 18 | |
Swell 1 Height (m) Direction Period (s) | WSW 10 | SW 10 | SW 10 | SW 10 | SW 10 | SW 10 | SW 9 | SW 9 | SW 9 | SW 9 | SW 8 | SW 8 | SW 8 | SW 8 | SW 8 | SW 8 | SW 8 | SW 8 | SW 8 | WSW 8 | WSW 7 | SW 7 | SW 7 | SW 7 |
 kJ | 39 | 117 | 98 | 98 | 76 | 23 | 21 | 12 | 12 | 12 | 11 | 11 | 11 | 10 | 10 | 10 | 10 | 10 | 9 | 6 | 5 | 2 | 2 | 2 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | SW 13 | SW 13 | SW 13 | SW 14 | SW 14 | SW 14 | W 14 | WSW 3 | W 13 | W 13 | W 13 | W 13 | W 13 | W 13 | W 13 | W 13 | W 13 | W 13 |
| kJ | — | — | — | — | — | — | 7 | 7 | 7 | 8 | 8 | 8 | 4 | 1 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | SW 13 | SW 14 | SW 14 | SW 14 | SW 14 | W 14 | W 14 | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | 7 | 7 | 8 | 8 | 8 | 4 | 4 | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | SW 10 | — | SW 10 | — | — | SSW 3 | SW 4 | SW 4 | SW 4 | SW 4 | SW 4 | SW 4 | SW 4 | — | — | — | — | — | — | — | — | — | — | — |
| kJ | 144 | — | 96 | — | — | 5 | 7 | 13 | 13 | 9 | 5 | 3 | 2 | — | — | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 35 | 35 | 35 | 144 | 35 | 35 | 35 | 35 | 151 | 144 | 144 | 150 | 151 | 150 | 151 | 150 | 150 | 150 | 150 | 151 | 151 | 151 | 151 | 151 |
Best forecast wave conditions in Anglesy | ||||||||||||||||||||||||
Best forecast wave conditions in United Kingdom | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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