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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 Wednesday 22 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
10.0° C
(Which is 1.1°C warmer than normal for this time of year)How big are the waves at Trearddur Bay (Holy Island) today?
The current surf forecast for Trearddur Bay (Holy Island) at 4PM is: 0.1m 16s primary swell from a South direction (forecast issued at 12:00pm April 22). An open ocean swell of 0.8m 6s is not directed at the surf break. The wind direction is predicted to be cross-offshore.
| Time (BST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (22 Apr) | - | - |
| Afternoon (22 Apr) | 0.5ft (0.1m) | 16s |
| Evening (22 Apr) | 0.5ft (0.1m) | 12s |
Table - waves today at Trearddur Bay (Holy Island). (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastMostly dry. Very mild (max 16°C on Thu afternoon, min 7°C on Wed morning). Winds decreasing (fresh winds from the E on Wed morning, calm by Thu afternoon). | ||||||||||||||||||||||||
Wed 22 | Thursday 23 | Friday 24 | Sat 25 | |||||||||||||||||||||
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 | |
Swell Height Map |    |    |    |    | ||||||||||||||||||||
ENE 4 | SSE 4 | S 16 | S 12 | S 12 | S 10 | S 9 | SSE 4 | SSE 5 | SW 12 | SW 11 | SW 10 | SW 10 | SW 10 | SW 10 | SW 10 | SW 10 | SW 11 | SW 11 | SW 11 | SW 11 | SW 11 | SW 11 | SW 10 | |
0 | 2 | 5 | 3 | 3 | 2 | 2 | 4 | 5 | 5 | 18 | 52 | 61 | 77 | 76 | 96 | 110 | 123 | 121 | 94 | 94 | 92 | 90 | 89 | |
Wind (km/h) | ||||||||||||||||||||||||
cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | glassy | cross-off | cross-off | cross-off | cross-off | cross-off | glassy | cross-off | cross | cross | cross-off | glassy | glassy | glassy | |
High Tide | 2:50PM5.09m | 3:10AM5.02m | 3:58PM4.74m | 4:22AM4.78m | 5:21PM4.51m | 5:47AM4.68m | ||||||||||||||||||
Low Tide | 8:32AM0.99m | 8:55PM1.50m | 9:36AM1.31m | 10:01PM1.87m | 10:52AM1.54m | 11:22PM2.07m | ||||||||||||||||||
 |  |  | |  |  |  | | | | | | | | | | | | | | | | | | |
 | 6:03 | — | — | — | — | — | 6:01 | — | — | — | — | — | — | — | 6:00 | — | — | — | — | — | — | — | 5:58 | — |
 | — | — | — | 8:30 | — | — | — | — | — | — | — | 8:31 | — | — | — | — | — | — | — | 8:34 | — | — | — | 8:35 |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 7 | 12 | 14 | 13 | 11 | 10 | 10 | 10 | 10 | 14 | 16 | 16 | 15 | 14 | 13 | 12 | 12 | 14 | 15 | 14 | 14 | 14 | 13 | 13 |
-1 | 4 | 8 | 7 | 6 | 5 | 4 | 4 | 5 | 11 | 15 | 14 | 12 | 11 | 11 | 10 | 11 | 12 | 12 | 10 | 11 | 12 | 11 | 11 | |
Swell 1 Height (m) Direction Period (s) | — | SSE 4 | — | — | S 12 | SSE 4 | SSE 4 | SSE 4 | SSE 5 | SSE 4 | NE 5 | SW 10 | SW 10 | SW 10 | SW 10 | SW 10 | SW 10 | SW 11 | SW 11 | SW 11 | SW 11 | SW 11 | SW 11 | SW 10 |
 kJ | — | 2 | — | — | 3 | 2 | 1 | 4 | 4 | 4 | 8 | 52 | 61 | 77 | 76 | 96 | 110 | 123 | 121 | 94 | 94 | 92 | 90 | 89 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | S 12 | S 10 | S 9 | S 9 | S 6 | S 6 | SW 11 | NE 5 | NE 4 | NE 4 | ENE 4 | ENE 4 | NE 4 | NE 4 | NE 4 | NE 4 | — | — | — | — |
| kJ | — | — | — | — | 3 | 2 | 2 | 2 | 1 | 1 | 18 | 6 | 3 | 2 | 1 | 2 | 1 | 1 | 1 | 1 | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | S 16 | S 12 | S 10 | — | S 6 | — | SW 12 | SW 12 | S 4 | — | — | SSE 4 | S 4 | — | — | — | — | — | — | — | — | — |
| kJ | — | — | 5 | 3 | 2 | — | 1 | — | 5 | 5 | 1 | — | — | 1 | 1 | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | ENE 4 | ENE 6 | ENE 6 | ENE 5 | E 5 | ENE 5 | ENE 5 | ENE 5 | ENE 5 | NE 5 | — | — | SE 4 | — | SE 4 | SE 4 | SE 3 | — | — | — | — | — | — | — |
| kJ | 21 | 53 | 34 | 20 | 15 | 14 | 10 | 9 | 9 | 6 | — | — | 3 | — | 2 | 2 | 2 | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 386 | 386 | 527 | 527 | 565 | 589 | 565 | 385 | 900 | 527 | 51 | 8 | 8 | 0 | 0 | 0 | 0 | 0 | 51 | 51 | 0 | 0 | 0 | 0 |
Best forecast wave conditions in Anglesy | ||||||||||||||||||||||||
Best forecast wave conditions in United Kingdom | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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