Trearddur Bay (Holy Island) surf forecast from 22 Aug 2026:
- Most powerful swell: Thursday 27 Aug, 1PM (local time) - 6ft (1.8m), 6s period, NW swell with 224 kJ wave energy.
Best Forecast Surf Conditions for Trearddur Bay (Holy Island) this week:
The most powerful waves expected at Trearddur Bay (Holy Island) in the next 16 days are 1.8m 6s and forecast to arrive on Thursday (Aug 27) at 1PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.7m 5s period and expected on Thursday (Aug 27) at 10AM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 1PM (Thu 27th Aug) | 6ft (1.8m) 6s |
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)
Nearest