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Using our statistical data for 7000 spots dating back to 2006, we can find those waves that break the most, with the best winds.
Surf Forecasts:
Llanddwyn Island surfForecast / Wales – Anglesy / UK
48hr Weather and Surf, issued 5 pm Tuesday 30 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
9.1° 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 12AM is: 0.1m 15s primary swell from a West direction and 0.1m 11s secondary swell from a West direction (forecast issued at 05:00pm December 30). The wind direction is predicted to be glassy.
| Time (GMT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (31 Dec) | 0.5ft (0.1m) | 13s |
| Afternoon (31 Dec) | 0.5ft (0.1m) | 13s |
| Evening (31 Dec) | 2.5ft (0.7m) | 4s |
Table - waves today at Llanddwyn Island. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Tuesday 30 | Wednesday 31 | Thursday 01 | Friday 02 | |||||||||||||||||||||
| 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) (?) | 16 | 16 | 15 | 15 | 14 | 14 | 13 | 13 | 13 | 4 | 4 | 4 | 5 | 5 | 6 | 6 | 6 | 6 | 7 | 7 | 6 | 6 | 6 | 12 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 5 | 5 | 4 | 4 | 4 | 4 | 4 | 3 | 3 | 9 | 14 | 20 | 45 | 103 | 184 | 143 | 165 | 233 | 247 | 189 | 177 | 152 | 101 | 3 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | off | off | off | glass | glass | glass | glass | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross | cross | cross | cross- off | cross- off | cross- off | cross | cross- off | cross- off | cross- off |
High Tide / height (m) | 5:13PM 3.48 | 5:57AM 3.42 | 6:20PM 3.61 | 6:55AM 3.66 | 7:21PM 3.77 | 7:48AM 3.91 | ||||||||||||||||||
Low Tide / height (m) | 12:21AM 0.75 | 12:52PM 0.84 | 1:24AM 0.58 | 1:54PM 0.51 | 2:21AM 0.38 | |||||||||||||||||||
Tuesday 30 | Wednesday 31 | Thursday 01 | Friday 02 | |||||||||||||||||||||
| Sunrise | - | - | - | - | - | - | 8:30 | - | - | - | - | - | - | - | 8:30 | - | - | - | - | - | - | - | 8:30 | - |
| Sunset | 4:07 | - | - | - | - | - | - | - | 4:08 | - | - | - | - | - | - | - | 4:09 | - | - | - | - | - | - | - |
 |  |  | | | |  | | | | |  | | |  | | | |  | | | | |  | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 1 | - | - | - | 1 | 1 | 1 | 3 | 1 | - |
| Temp. °C | 5 | 5 | 5 | 5 | 4 | 4 | 4 | 5 | 5 | 5 | 4 | 5 | 6 | 6 | 7 | 7 | 7 | 6 | 5 | 5 | 5 | 4 | 3 | 4 |
| Feels °C (?) | 1 | 1 | 2 | 2 | 1 | 2 | 2 | 2 | 0 | -1 | -2 | -2 | -2 | -2 | -1 | -2 | -2 | -3 | -4 | -3 | -4 | -3 | -5 | -4 |
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
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