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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 6 am Monday 20 Apr 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
10.1° 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 12PM is: 0.1m 15s primary swell from a West direction and 0.1m 6s secondary swell from a Southwest direction (forecast issued at 06:00am April 20). The wind direction is predicted to be glassy.
| Time (BST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (20 Apr) | 0.5ft (0.1m) | 15s |
| Afternoon (20 Apr) | 0.5ft (0.1m) | 15s |
| Evening (20 Apr) | 0.5ft (0.1m) | 15s |
Table - waves today at Llanddwyn Island. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Monday 20 | Tuesday 21 | Wednesday 22 | Thu 23 | |||||||||||||||||||||
| 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 | 1 AM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | — | |||||||||||||||||||||||
| Period(s) (?) | 6 | 6 | 15 | 15 | 15 | 15 | 15 | 14 | 14 | 13 | 13 | 13 | 18 | 13 | 13 | 13 | 9 | 5 | 4 | 4 | 16 | 3 | 3 | - |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 1 | 1 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 3 | 3 | 3 | 6 | 3 | 3 | 3 | 2 | 1 | 2 | 0 | 5 | 0 | 0 | 0 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | off | off | off | cross- off | cross- off | 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 / height (m) | 11:49AM 4.27 | 12:08AM 4.15 | 12:37PM 3.97 | 12:56AM 3.92 | 1:31PM 3.60 | |||||||||||||||||||
Low Tide / height (m) | 6:24AM -0.05 | 6:48PM 0.16 | 7:12AM 0.11 | 7:37PM 0.47 | 8:07AM 0.36 | 8:32PM 0.80 | ||||||||||||||||||
Monday 20 | Tuesday 21 | Wednesday 22 | Thu 23 | |||||||||||||||||||||
| Sunrise | - | 6:07 | - | - | - | - | - | - | - | 6:05 | - | - | - | - | - | - | - | 6:03 | - | - | - | - | - | - |
| Sunset | - | - | - | - | - | 8:24 | - | - | - | - | - | - | - | 8:27 | - | - | - | - | - | - | - | 8:29 | - | - |
 |  | |  | | |  | | | | | | | | | | | | | | | |  | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 8 | 8 | 10 | 11 | 11 | 11 | 11 | 9 | 7 | 5 | 7 | 11 | 13 | 11 | 8 | 7 | 6 | 5 | 8 | 12 | 14 | 13 | 10 | 8 |
| Feels °C (?) | 5 | 5 | 8 | 8 | 9 | 8 | 8 | 5 | 2 | 0 | 1 | 4 | 6 | 4 | 0 | 0 | 0 | 0 | 2 | 6 | 8 | 8 | 6 | 4 |
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Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
FREE! Surf-Forecast.com widget for your website
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