Keta Reef Oshima surf forecast from 28 Aug 2026:
- Best quality surf: Tuesday 1 Sep, 3AM (local time) - 3ft (0.9m), 10s period, SSW swell with glassy winds.
- Most powerful swell: Thursday 3 Sep, 6AM (local time) - 4.5ft (1.4m), 11s period, SSW swell with 444 kJ wave energy.
- Next surfable swell (1★+): Tuesday 1 Sep, 3AM (local time) - 3ft (0.9m), 10s period with SSW swell.
Best Forecast Surf Conditions for Keta Reef Oshima this week:
The surf forecast for Keta Reef Oshima over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Tuesday (Sep 01) at 3AM. The primary swell is predicted to be 0.9m and 10s period with a secondary swell of 0.7m and 12s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Keta Reef Oshima in the next 16 days are 1.4m 11s and forecast to arrive on Thursday (Sep 03) at 6AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.8m 5s period and expected on Saturday (Aug 29) at 9PM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 3AM (Tue 1st Sep) | 3ft (0.9m) 10s |
| Best Surf | 3AM (Tue 1st Sep) | 3ft (0.9m) 10s |
| Most Powerful | 6AM (Thu 3rd Sep) | 4.5ft (1.4m) 11s |
Table - best surf conditions forecast for Keta Reef Oshima 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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