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Surf Forecasts:
Llanddwyn Island surfForecast / Wales – Anglesy / UK
48hr Weather and Surf, issued 5 pm Wednesday 10 Dec 2025 GMTForecast 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
10.5° C
(Which is normal for this time of year)How big are the waves at Llanddwyn Island today?
The current surf forecast for Llanddwyn Island at 10PM is: 2.2m 7s primary swell from a Southwest direction (forecast issued at 05:00pm December 10). The wind direction is predicted to be onshore.
| Time (GMT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (10 Dec) | - | - |
| Afternoon (10 Dec) | 7ft (2.2m) | 12s |
| Evening (10 Dec) | 7ft (2.1m) | 7s |
Table - waves today at Llanddwyn Island. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Wednesday 10 | Thursday 11 | Friday 12 | Saturday 13 | |||||||||||||||||||||
| 3 PM | 6 PM | 9 PM | 0 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 0 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 0 AM | 3 AM | 6 AM | 9 AM | 12 PM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 12 | 7 | 7 | 7 | 8 | 8 | 9 | 9 | 10 | 10 | 13 | 13 | 13 | 13 | 14 | 13 | 6 | 6 | 6 | 7 | 7 | 8 | 9 | 9 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 1379 | 447 | 453 | 554 | 756 | 857 | 1046 | 1055 | 1048 | 1070 | 1475 | 734 | 546 | 465 | 777 | 846 | 145 | 191 | 265 | 337 | 449 | 838 | 1306 | 1494 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | on | on | on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | on | cross | glass | on | cross- on | on | on | on | on | on | cross- on | cross- on | on | on |
High Tide / height (m) | 12:59PM 3.83 | 1:48AM 3.17 | 2:03PM 3.61 | 3:01AM 3.02 | 3:12PM 3.42 | 4:12AM 2.99 | ||||||||||||||||||
Low Tide / height (m) | 8:05PM 0.48 | 8:17AM 0.99 | 9:04PM 0.72 | 9:18AM 1.19 | 10:08PM 0.90 | 10:26AM 1.30 | ||||||||||||||||||
Wednesday 10 | Thursday 11 | Friday 12 | Saturday 13 | |||||||||||||||||||||
| Sunrise | - | - | - | - | - | - | 8:19 | - | - | - | - | - | - | - | 8:21 | - | - | - | - | - | - | - | 8:22 | - |
| Sunset | 4:00 | - | - | - | - | - | - | - | 4:00 | - | - | - | - | - | - | - | 4:00 | - | - | - | - | - | - | - |
 |  |  |  | | |  | | | |  | | | | | |  |  | | | | |  | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | 2 | 1 | 1 | - | - | - | 1 | 1 | - | - | - | 3 | 4 | 3 |
| Temp. °C | 11 | 11 | 10 | 10 | 11 | 11 | 10 | 11 | 12 | 12 | 10 | 8 | 8 | 8 | 9 | 10 | 10 | 10 | 10 | 10 | 10 | 9 | 11 | 12 |
| Feels °C (?) | 4 | 3 | 2 | 1 | 2 | 2 | 0 | 2 | 4 | 4 | 6 | 5 | 7 | 5 | 4 | 3 | 4 | 4 | 3 | 3 | 1 | -1 | 3 | 3 |
- Map Icons:
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Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
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