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Trearddur Bay (Holy Island) surfForecast / Wales – Anglesy / UK
48hr Weather and Surf, issued 11 pm Monday 08 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
11.0° C
(Which is slightly warmer than usual)Updates in hr min s Forecast update imminent
Mon 08 | Tuesday 09 | Wednesday 10 | Thursday 11 | |||||||||||||||||||||
| 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) (?) | 10 | 8 | 7 | 8 | 10 | 10 | 12 | 12 | 9 | 8 | 8 | 7 | 7 | 7 | 7 | 6 | 6 | 7 | 7 | 7 | 7 | 8 | 8 | 8 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 648 | 398 | 282 | 1602 | 2858 | 3848 | 9469 | 7095 | 3132 | 1949 | 1245 | 997 | 795 | 651 | 501 | 352 | 374 | 421 | 530 | 732 | 826 | 1003 | 974 | 933 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- on | cross | cross | cross- on | cross- on | cross- on | cross- on | on | on | on | on | on | on | on | on | on | on | on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on |
High Tide / height (m) | 1:00AM 5.35 | 1:16PM 5.56 | 1:54AM 5.07 | 2:10PM 5.33 | 2:51AM 4.80 | 3:07PM 5.09 | ||||||||||||||||||
Low Tide / height (m) | 6:44PM 0.89 | 6:59AM 1.41 | 7:38PM 1.13 | 7:51AM 1.68 | 8:35PM 1.39 | 8:47AM 1.94 | ||||||||||||||||||
Mon 08 | Tuesday 09 | Wednesday 10 | Thursday 11 | |||||||||||||||||||||
| Sunrise | - | - | - | - | 8:19 | - | - | - | - | - | - | - | 8:21 | - | - | - | - | - | - | - | 8:22 | - | - | - |
| Sunset | - | - | - | - | - | - | 4:00 | - | - | - | - | - | - | - | 4:00 | - | - | - | - | - | - | - | 4:00 | - |
 | |  | |  | | |  | | | |  |  | |  | | | | | | | | | | |
Rain (mm) | 2 | 1 | 7 | 9 | 2 | 5 | 1 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 12 | 12 | 12 | 13 | 14 | 13 | 12 | 12 | 11 | 11 | 11 | 11 | 10 | 11 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 11 | 11 | 11 |
| Feels °C (?) | 7 | 6 | 4 | 2 | 3 | 1 | -2 | 0 | 0 | 0 | 1 | 1 | 0 | 2 | 1 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 2 | 1 |
- 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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