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:
Trearddur Bay (Holy Island) surfForecast / Wales – Anglesy / UK
48hr Weather and Surf, issued 5 am Thursday 25 Dec 2025 GMTForecast update in hr min s Forecast update imminent
Trearddur Bay (Holy Island) surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Trearddur Bay (Holy Island) sea temperature is
10.6° C
(Which is 1.1°C warmer than normal for this time of year)Updates in hr min s Forecast update imminent
Thursday 25 | Friday 26 | Saturday 27 | Sun 28 | |||||||||||||||||||||
| 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 | 9 PM | 0 AM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 5 | 5 | 5 | 4 | 5 | 6 | 6 | 4 | 6 | 6 | 6 | 5 | 5 | 5 | 5 | 4 | 4 | 5 | 4 | 4 | 5 | 5 | 14 | 14 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 4 | 8 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- off | cross- off | cross- off | cross- off | off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | off | off | off | off | off | off | off | cross- off | off | cross- off | cross- off | cross- off | cross- off |
High Tide / height (m) | 1:13AM 4.91 | 1:27PM 5.29 | 1:58AM 4.83 | 2:13PM 5.20 | 2:48AM 4.75 | 3:05PM 5.11 | ||||||||||||||||||
Low Tide / height (m) | 7:13AM 1.67 | 7:45PM 1.43 | 7:59AM 1.76 | 8:33PM 1.48 | 8:51AM 1.85 | 9:29PM 1.54 | ||||||||||||||||||
Thursday 25 | Friday 26 | Saturday 27 | Sun 28 | |||||||||||||||||||||
| Sunrise | - | - | 8:32 | - | - | - | - | - | - | - | 8:32 | - | - | - | - | - | - | - | 8:33 | - | - | - | - | - |
| Sunset | - | - | - | - | 4:04 | - | - | - | - | - | - | - | 4:04 | - | - | - | - | - | - | - | 4:05 | - | - | - |
 | |  | | | | | | | | | | | | | | | | |  | |  | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 2 | 3 | 3 | 4 | 4 | 4 | 4 | 4 | 4 | 3 | 3 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 5 | 4 | 5 | 6 | 5 | 4 |
| Feels °C (?) | -7 | -6 | -6 | -6 | -7 | -6 | -5 | -4 | -4 | -5 | -5 | -4 | -4 | -4 | -4 | -4 | -4 | -5 | -3 | -5 | -4 | -3 | -3 | -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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