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Trearddur Bay (Holy Island) Surf Forecast
/ Wales – Anglesy (10 surf breaks) /
Trearddur Bay (Holy Island) surfForecast / Wales – Anglesy / UK
48hr Weather and Surf, issued 12 pm Saturday 19 Apr 2025 BST
How big are the waves at Trearddur Bay (Holy Island) today?
The current surf forecast for Trearddur Bay (Holy Island) at 3PM is: 0.8m 5s primary swell from a Southeast direction and 0.6m 5s secondary swell from a South-southeast direction, 0.5m 8s secondary swell from a South-southwest direction (forecast issued at 12:00pm April 19). The wind direction is predicted to be cross-offshore.
| Time (BST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (19 Apr) | 1.5ft (0.5m) | 7s |
| Afternoon (19 Apr) | 2.5ft (0.8m) | 5s |
| Evening (19 Apr) | 1.5ft (0.5m) | 8s |
Table - waves today at Trearddur Bay (Holy Island). (Swell directed towards the surf break)
Saturday 19 | Sunday 20 | Monday 21 | Tuesday 22 | Wednesday 23 | Thursday 24 | Friday 25 | Saturday 26 | |||||||||||||||||||||||||||||||||||||||||||||||||||||
| 10 AM | 1 PM | 4 PM | 7 PM | 10 PM | 1 AM | 4 AM | 7 AM | 10 AM | 1 PM | 4 PM | 7 PM | 10 PM | 1 AM | 4 AM | 7 AM | 10 AM | 1 PM | 4 PM | 7 PM | 10 PM | 1 AM | 4 AM | 7 AM | 10 AM | 1 PM | 4 PM | 7 PM | 10 PM | 1 AM | 4 AM | 7 AM | 10 AM | 1 PM | 4 PM | 7 PM | 10 PM | 1 AM | 4 AM | 7 AM | 10 AM | 1 PM | 4 PM | 7 PM | 10 PM | 1 AM | 4 AM | 7 AM | 10 AM | 1 PM | 4 PM | 7 PM | 10 PM | 1 AM | 4 AM | 7 AM | 10 AM | 1 PM | 4 PM | 7 PM | |
Rating (10 max) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Swell Height Map |    |    |    |    |    |    |    |    | ||||||||||||||||||||||||||||||||||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Period(s) (?) | 7 | 5 | 5 | 8 | 8 | 8 | 8 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 6 | 2 | 3 | 3 | 4 | 4 | 3 | 6 | 5 | 6 | 6 | 4 | 5 | 6 | 6 | 7 | 8 | 8 | 8 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 6 | 6 | 6 | 15 | 4 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 14 | 5 | 14 | 14 |
Wave (?)Graph  | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Energy (?) | 29 | 38 | 33 | 61 | 35 | 33 | 32 | 21 | 18 | 10 | 9 | 9 | 4 | 4 | 4 | 1 | 2 | 3 | 3 | 2 | 2 | 10 | 14 | 15 | 32 | 35 | 78 | 141 | 320 | 482 | 277 | 154 | 98 | 70 | 70 | 56 | 36 | 25 | 20 | 20 | 12 | 11 | 12 | 10 | 10 | 9 | 9 | 8 | 20 | 31 | 23 | 23 | 14 | 10 | 8 | 8 | 7 | 8 | 8 | 4 |
Wind (km/h) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- on | glass | cross- off | glass | cross- on | cross- on | cross- on | on | cross- on | on | on | on | on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- off | cross- off | cross- off | off | off | cross- off | cross- off | cross- off | cross | cross | on | on | cross- on | cross- off | cross- on | cross- on | cross- on | cross- on | on | cross- on | cross- on | cross- on | cross- on | glass | cross- off | cross- off | off |
High Tide / height (m) | 2:58PM 4.46 | 3:22AM 4.59 | 4:02PM 4.22 | 4:30AM 4.40 | 5:27PM 4.12 | 5:54AM 4.39 | 6:56PM 4.26 | 7:12AM 4.59 | 8:02PM 4.57 | 8:12AM 4.94 | 8:53PM 4.92 | 9:02AM 5.31 | 9:36PM 5.25 | 9:47AM 5.63 | ||||||||||||||||||||||||||||||||||||||||||||||
Low Tide / height (m) | 8:46AM 1.74 | 9:07PM 2.04 | 9:44AM 1.96 | 10:11PM 2.28 | 10:59AM 2.06 | 11:35PM 2.34 | 12:23PM 1.93 | 12:57AM 2.14 | 1:34PM 1.57 | 2:01AM 1.75 | 2:29PM 1.14 | 2:51AM 1.32 | 3:16PM 0.73 | 3:35AM 0.91 | 3:59PM 0.42 | |||||||||||||||||||||||||||||||||||||||||||||
Saturday 19 | Sunday 20 | Monday 21 | Tuesday 22 | Wednesday 23 | Thursday 24 | Friday 25 | Saturday 26 | |||||||||||||||||||||||||||||||||||||||||||||||||||||
| Sunrise | - | - | - | - | - | - | - | 6:09 | - | - | - | - | - | - | - | 6:07 | - | - | - | - | - | - | - | 6:03 | - | - | - | - | - | - | - | 6:01 | - | - | - | - | - | - | - | 6:00 | - | - | - | - | - | - | - | 5:58 | - | - | - | - | - | - | - | 5:56 | - | - | - | - |
| Sunset | - | - | - | 8:24 | - | - | - | - | - | - | - | 8:25 | - | - | - | - | - | - | - | 8:28 | - | - | - | - | - | - | - | 8:30 | - | - | - | - | - | - | - | 8:31 | - | - | - | - | - | - | - | 8:34 | - | - | - | - | - | - | - | 8:35 | - | - | - | - | - | - | - | 8:37 |
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Rain (mm) | 1 | 2 | - | - | 1 | - | - | - | - | - | - | - | - | - | 2 | 2 | 1 | - | - | - | - | - | - | - | - | - | - | - | - | 3 | 3 | 1 | 1 | - | - | - | - | - | - | - | - | - | - | - | - | - | 1 | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 11 | 11 | 12 | 11 | 10 | 9 | 8 | 8 | 9 | 10 | 11 | 11 | 11 | 10 | 9 | 9 | 8 | 10 | 10 | 11 | 11 | 11 | 10 | 10 | 10 | 10 | 10 | 10 | 11 | 10 | 10 | 10 | 9 | 10 | 10 | 9 | 9 | 9 | 9 | 9 | 10 | 12 | 13 | 12 | 11 | 11 | 10 | 10 | 10 | 11 | 12 | 11 | 11 | 11 | 10 | 10 | 11 | 11 | 12 | 11 |
| Feels °C (?) | 4 | 7 | 8 | 6 | 6 | 5 | 4 | 5 | 6 | 8 | 8 | 9 | 9 | 6 | 6 | 4 | 5 | 7 | 5 | 6 | 7 | 8 | 8 | 5 | 4 | 4 | 3 | 3 | 4 | 1 | 2 | 3 | 6 | 7 | 5 | 4 | 5 | 4 | 4 | 5 | 7 | 9 | 10 | 9 | 9 | 9 | 8 | 8 | 8 | 9 | 10 | 9 | 9 | 8 | 7 | 8 | 10 | 9 | 9 | 8 |
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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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