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Trearddur Bay (Holy Island) Surf Forecast
/ Wales – Anglesy (10 surf breaks) /
Surf Forecasts:
Trearddur Bay (Holy Island) surfForecast / Wales – Anglesy / UK
48hr Weather and Surf, issued 12 pm Tuesday 07 Apr 2026 BSTForecast 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
8.9° C
(Which is slightly warmer than usual)How big are the waves at Trearddur Bay (Holy Island) today?
The current surf forecast for Trearddur Bay (Holy Island) at 3PM is: 0.4m 16s primary swell from a Southwest direction and 0.8m 7s secondary swell from a South-southwest direction, 0.5m 4s secondary swell from a Southeast direction (forecast issued at 12:00pm April 07). The wind direction is predicted to be onshore.
| Time (BST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (07 Apr) | 1.5ft (0.4m) | 18s |
| Afternoon (07 Apr) | 1.5ft (0.4m) | 16s |
| Evening (07 Apr) | 2.5ft (0.8m) | 7s |
Table - waves today at Trearddur Bay (Holy Island). (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Tuesday 07 | Wednesday 08 | Thursday 09 | Friday 10 | |||||||||||||||||||||
| 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 | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 17 | 16 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 10 | 8 | 8 | 8 | 8 | 4 | 5 | 6 | 5 | 5 | 5 | 5 | 5 | 5 | 5 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 107 | 69 | 61 | 59 | 57 | 56 | 42 | 26 | 16 | 46 | 18 | 17 | 17 | 16 | 38 | 115 | 115 | 105 | 92 | 75 | 52 | 53 | 30 | 10 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- off | cross- on | glass | glass | on | cross- on | on | glass | cross- on | on | on | cross- on | cross- on | cross- on | cross- on | on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | on | cross- on |
High Tide / height (m) | 2:09PM 4.82 | 2:27AM 4.84 | 2:51PM 4.52 | 3:12AM 4.59 | 3:46PM 4.22 | 4:12AM 4.35 | ||||||||||||||||||
Low Tide / height (m) | 7:59AM 1.41 | 8:17PM 1.68 | 8:40AM 1.70 | 8:59PM 2.01 | 9:30AM 2.00 | 9:55PM 2.33 | ||||||||||||||||||
Tuesday 07 | Wednesday 08 | Thursday 09 | Friday 10 | |||||||||||||||||||||
| Sunrise | - | - | - | - | - | - | - | 6:35 | - | - | - | - | - | - | - | 6:33 | - | - | - | - | - | - | - | 6:31 |
| Sunset | - | - | - | 8:02 | - | - | - | - | - | - | - | 8:05 | - | - | - | - | - | - | - | 8:07 | - | - | - | - |
 | |  | |  |  | |  | | | | |  | | | |  | | | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 2 | - | - | - | - | - | - | - |
| Temp. °C | 15 | 15 | 16 | 17 | 15 | 13 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 10 | 9 | 8 | 8 | 8 | 9 | 8 | 8 | 7 | 7 | 7 |
| Feels °C (?) | 11 | 12 | 15 | 16 | 12 | 10 | 10 | 12 | 11 | 10 | 10 | 9 | 8 | 5 | 1 | 0 | 0 | 0 | 1 | 0 | 1 | 2 | 3 | 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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