Trearddur Bay (Holy Island) surf forecast from 6 Oct 2026:
- Best quality surf: Tuesday 13 Oct, 7AM (local time) - 11ft (3.5m), 8s period, SSW swell with cross-shore winds.
- Most powerful swell: Tuesday 13 Oct, 7AM (local time) - 11ft (3.5m), 8s period, SSW swell with 1,565 kJ wave energy.
- Next surfable swell (1★+): Tuesday 13 Oct, 7AM (local time) - 11ft (3.5m), 8s period with SSW swell.
Best Forecast Surf Conditions for Trearddur Bay (Holy Island) this week:
The surf forecast for Trearddur Bay (Holy Island) over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Tuesday (Oct 13) at 7AM. The primary swell is predicted to be 3.5m and 8s period. The wind is predicted to be cross-shore as the swell arrives.
The most powerful waves expected at Trearddur Bay (Holy Island) in the next 16 days are 3.5m 8s and forecast to arrive on Tuesday (Oct 13) at 7AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.7m 6s period and expected on Thursday (Oct 08) at 1AM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 7AM (Tue 13th Oct) | 11ft (3.5m) 8s |
| Best Surf | 7AM (Tue 13th Oct) | 11ft (3.5m) 8s |
| Most Powerful | 7AM (Tue 13th Oct) | 11ft (3.5m) 8s |
Table - best surf conditions forecast for Trearddur Bay (Holy Island) over the next 16 days.
- 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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