Katahama surf forecast from 22 Aug 2026:
- Best quality surf: Tuesday 25 Aug, 12PM (local time) - 10ft (3.0m), 14s period, SSE swell with cross-onshore winds.
- Most powerful swell: Tuesday 25 Aug, 6PM (local time) - 10ft (3.0m), 14s period, S swell with 3,180 kJ wave energy.
- Next surfable swell (1★+): Sunday 23 Aug, 12AM (local time) - 2.5ft (0.7m), 11s period with E swell.
Best Forecast Surf Conditions for Katahama this week:
The surf forecast for Katahama 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 0.7m and 11s period. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Katahama in the next 16 days are 3.0m 14s and forecast to arrive on Tuesday (Aug 25) at 6PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.5m 13s period and expected on Wednesday (Aug 26) at 3AM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 12AM (Sun 23rd Aug) | 2.5ft (0.7m) 11s |
| Best Surf | 12PM (Tue 25th Aug) | 10ft (3.0m) 14s |
| Most Powerful | 6PM (Tue 25th Aug) | 10ft (3.0m) 14s |
Table - best surf conditions forecast for Katahama 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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