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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 Monday 23 Jun 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: 1.2m 5s primary swell from a West-southwest direction and 0.1m 12s secondary swell from a South direction, 0.1m 12s secondary swell from a Southwest direction (forecast issued at 12:00pm June 23). The wind direction is predicted to be onshore.
| Time (BST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (23 Jun) | 5ft (1.5m) | 5s |
| Afternoon (23 Jun) | 4ft (1.2m) | 5s |
| Evening (23 Jun) | 3.5ft (1.0m) | 5s |
Table - waves today at Trearddur Bay (Holy Island). (Swell directed towards the surf break)
Monday 23 | Tuesday 24 | Wednesday 25 | Thursday 26 | Friday 27 | Saturday 28 | Sunday 29 | Monday 30 | |||||||||||||||||||||||||||||||||||||||||||||||||||||
| 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) (?) | 5 | 5 | 5 | 5 | 5 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 6 | 5 | 6 | 6 | 6 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 6 | 6 | 6 | 6 | 4 | 5 | 5 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 5 | 6 |
Wave (?)Graph  | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Energy (?) | 134 | 88 | 70 | 59 | 55 | 90 | 125 | 247 | 203 | 172 | 143 | 137 | 115 | 105 | 89 | 56 | 36 | 34 | 32 | 39 | 52 | 56 | 82 | 60 | 50 | 59 | 37 | 38 | 98 | 231 | 245 | 309 | 516 | 547 | 647 | 666 | 566 | 321 | 169 | 112 | 74 | 55 | 38 | 36 | 31 | 15 | 24 | 54 | 105 | 132 | 134 | 134 | 184 | 204 | 139 | 129 | 251 | 75 | 86 | 284 |
Wind (km/h) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- on | on | on | on | on | on | on | on | on | on | on | on | on | on | cross- on | cross- on | on | on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | on | on | on | on | cross- on | cross- on | cross- on | on | cross- on | cross- on | on | on | on | on | on | on | on | on | on | on | glass | cross- off | cross- off | cross- off | cross- on | on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on |
High Tide / height (m) | 9:00AM 5.19 | 9:34PM 5.17 | 9:58AM 5.31 | 10:26PM 5.36 | 10:53AM 5.39 | 11:15PM 5.51 | 11:44AM 5.41 | 12:03AM 5.60 | 12:33PM 5.35 | 12:49AM 5.61 | 1:21PM 5.23 | 1:35AM 5.52 | 2:07PM 5.06 | 2:19AM 5.36 | 2:52PM 4.85 | |||||||||||||||||||||||||||||||||||||||||||||
Low Tide / height (m) | 3:13PM 1.06 | 3:42AM 1.04 | 4:06PM 0.98 | 4:36AM 0.84 | 4:57PM 0.94 | 5:27AM 0.69 | 5:45PM 0.94 | 6:17AM 0.63 | 6:32PM 1.00 | 7:06AM 0.68 | 7:18PM 1.13 | 7:53AM 0.81 | 8:03PM 1.30 | 8:40AM 1.01 | ||||||||||||||||||||||||||||||||||||||||||||||
Monday 23 | Tuesday 24 | Wednesday 25 | Thursday 26 | Friday 27 | Saturday 28 | Sunday 29 | Monday 30 | |||||||||||||||||||||||||||||||||||||||||||||||||||||
| Sunrise | - | - | - | - | - | - | - | 4:50 | - | - | - | - | - | - | - | 4:50 | - | - | - | - | - | - | - | 4:52 | - | - | - | - | - | - | - | 4:52 | - | - | - | - | - | - | - | 4:52 | - | - | - | - | - | - | - | 4:52 | - | - | - | - | - | - | - | 4:54 | - | - | - | - |
| Sunset | - | - | - | 9:50 | - | - | - | - | - | - | - | 9:50 | - | - | - | - | - | - | - | 9:50 | - | - | - | - | - | - | - | 9:50 | - | - | - | - | - | - | - | 9:50 | - | - | - | - | - | - | - | 9:50 | - | - | - | - | - | - | - | 9:49 | - | - | - | - | - | - | - | 9:49 |
 | | | |  |  | |  | |  |  | | |  | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |  | | | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | 1 | - | - | - | - | - | 1 | - | - | - | - | - | - | - | - | 2 | - | - | - | - | - | - | - | - | 2 | 1 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 13 | 14 | 16 | 15 | 14 | 15 | 13 | 14 | 15 | 15 | 16 | 16 | 15 | 15 | 15 | 14 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 12 | 13 | 13 | 14 | 14 | 14 | 14 | 14 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 16 | 16 | 16 | 16 | 17 | 18 | 18 | 16 | 13 | 13 | 14 | 16 | 16 | 16 | 16 | 17 | 16 | 16 | 17 | 18 | 18 | 18 |
| Feels °C (?) | 7 | 9 | 11 | 10 | 9 | 11 | 7 | 9 | 10 | 9 | 12 | 13 | 13 | 14 | 14 | 13 | 14 | 13 | 11 | 11 | 11 | 10 | 10 | 6 | 8 | 9 | 8 | 7 | 7 | 6 | 7 | 9 | 8 | 8 | 8 | 7 | 8 | 10 | 12 | 14 | 14 | 14 | 14 | 16 | 16 | 16 | 10 | 10 | 12 | 14 | 13 | 11 | 12 | 14 | 12 | 12 | 13 | 14 | 15 | 15 |
- 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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