Onjuku surf forecast from 22 Aug 2026:
- Best quality surf: Monday 24 Aug, 9AM (local time) - 4ft (1.2m), 18s period, SSE swell with glassy winds.
- Most powerful swell: Monday 24 Aug, 9PM (local time) - 7ft (2.2m), 15s period, SSE swell with 2,111 kJ wave energy.
- Next surfable swell (1★+): Sunday 23 Aug, 12AM (local time) - 3ft (0.9m), 10s period with E swell.
Best Forecast Surf Conditions for Onjuku this week:
The surf forecast for Onjuku over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Sunday (Aug 23) at 12AM. The primary swell is predicted to be 0.9m and 10s period with a secondary swell of 0.4m and 4s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Onjuku in the next 16 days are 2.2m 15s and forecast to arrive on Monday (Aug 24) at 9PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.2m 6s period and expected on Friday (Aug 28) at 6PM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 12AM (Sun 23rd Aug) | 3ft (0.9m) 10s |
| Best Surf | 9AM (Mon 24th Aug) | 4ft (1.2m) 18s |
| Most Powerful | 9PM (Mon 24th Aug) | 7ft (2.2m) 15s |
Table - best surf conditions forecast for Onjuku 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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