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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 5 pm Monday 23 Feb 2026 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
8.1° 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 1AM is: 1.7m 6s primary swell from a South-southwest direction and 0.2m 14s secondary swell from a West-southwest direction (forecast issued at 05:00pm February 23). The wind direction is predicted to be cross-onshore.
| Time (GMT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (24 Feb) | 6ft (1.8m) | 6s |
| Afternoon (24 Feb) | 5.5ft (1.7m) | 6s |
| Evening (24 Feb) | 6.5ft (2.0m) | 6s |
Table - waves today at Trearddur Bay (Holy Island). (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Monday 23 | Tuesday 24 | Wednesday 25 | Thursday 26 | |||||||||||||||||||||
| 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 | 3 AM | 6 AM | 9 AM | 12 PM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 6 | 6 | 7 | 7 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 7 | 7 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 7 | 7 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 223 | 153 | 220 | 237 | 277 | 211 | 233 | 241 | 207 | 225 | 321 | 311 | 268 | 235 | 245 | 230 | 225 | 211 | 254 | 196 | 184 | 270 | 530 | 837 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | on | on | on | cross- 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- on | cross- on | cross- on | cross- on | cross- on | cross- on | on |
High Tide / height (m) | 2:04PM 5.32 | 2:29AM 4.91 | 3:01PM 4.96 | 3:33AM 4.62 | 4:19PM 4.61 | 5:05AM 4.44 | ||||||||||||||||||
Low Tide / height (m) | 8:20PM 1.30 | 8:45AM 1.52 | 9:20PM 1.71 | 9:58AM 1.84 | 10:40PM 2.04 | 11:32AM 1.96 | ||||||||||||||||||
Monday 23 | Tuesday 24 | Wednesday 25 | Thursday 26 | |||||||||||||||||||||
| Sunrise | - | - | - | - | - | - | 7:18 | - | - | - | - | - | - | - | 7:16 | - | - | - | - | - | - | - | 7:13 | - |
| Sunset | 5:44 | - | - | - | - | - | - | - | 5:45 | - | - | - | - | - | - | - | 5:46 | - | - | - | - | - | - | - |
 |  | | | | |  |  | |  |  | | | | | | | | | | | | | | |
Rain (mm) | 2 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 9 | 10 | 9 | 9 | 10 | 9 | 9 | 9 | 11 | 11 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 11 | 10 | 10 | 9 | 9 | 9 | 10 |
| Feels °C (?) | 4 | 6 | 3 | 2 | 1 | 1 | 1 | 1 | 3 | 2 | 2 | 3 | 3 | 3 | 4 | 3 | 3 | 5 | 3 | 4 | 2 | 1 | -1 | -1 |
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