Using Surf-Forecast’s Historical Surf Data To Find The Most Consistent Waves On Earth
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 11 pm Wednesday 31 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
9.0° 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 1AM is: 1.0m 4s primary swell from a West-northwest direction and 0.1m 10s secondary swell from a Southwest direction (forecast issued at 11:00pm December 31). The wind direction is predicted to be cross-onshore.
| Time (GMT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (01 Jan) | 4.5ft (1.4m) | 6s |
| Afternoon (01 Jan) | 0.5ft (0.1m) | 9s |
| Evening (01 Jan) | 5ft (1.6m) | 6s |
Table - waves today at Llanddwyn Island. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Thursday 01 | Friday 02 | Saturday 03 | ||||||||||||||||||||||
| 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 | 3 PM | 6 PM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |  |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 4 | 4 | 5 | 6 | 6 | 6 | 9 | 6 | 6 | 6 | 7 | 6 | 7 | 7 | 7 | 12 | 12 | 7 | 11 | 10 | 10 | 10 | 12 | 11 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 9 | 28 | 69 | 151 | 143 | 115 | 2 | 177 | 167 | 260 | 248 | 167 | 140 | 198 | 247 | 3 | 3 | 158 | 11 | 16 | 16 | 14 | 21 | 19 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- on | cross- on | cross- on | cross | cross- off | cross- off | cross- off | cross- off | cross | cross | 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) | ||||||||||||||||||||||||
Low Tide / height (m) | ||||||||||||||||||||||||
Thursday 01 | Friday 02 | Saturday 03 | ||||||||||||||||||||||
| Sunrise | - | - | - | - | 8:30 | - | - | - | - | - | - | - | 8:30 | - | - | - | - | - | - | - | 8:30 | - | - | - |
| Sunset | - | - | - | - | - | - | 4:09 | - | - | - | - | - | - | - | 4:10 | - | - | - | - | - | - | - | 4:12 | - |
 |  | | |  |  | | | | |  | |  | | | | | | |  |  | | | | |
Rain (mm) | - | - | - | - | 1 | - | - | - | - | - | 1 | 1 | 1 | 1 | 1 | 1 | - | - | 1 | 1 | - | - | - | - |
| Temp. °C | 4 | 5 | 6 | 7 | 7 | 7 | 6 | 6 | 6 | 6 | 5 | 4 | 4 | 5 | 6 | 4 | 4 | 3 | 3 | 4 | 3 | 4 | 4 | 4 |
| Feels °C (?) | -3 | -3 | -2 | -2 | -1 | -2 | -4 | -2 | -3 | -5 | -3 | -4 | -4 | -5 | -3 | -5 | -5 | -6 | -6 | -5 | -7 | -5 | -4 | -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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