Kosi Bay surf forecast from 22 Aug 2026:
- Best quality surf: Saturday 29 Aug, 5AM (local time) - 3.5ft (1.1m), 13s period, S swell with cross-offshore winds.
- Most powerful swell: Thursday 27 Aug, 2AM (local time) - 7ft (2.1m), 18s period, S swell with 2,703 kJ wave energy.
- Next surfable swell (1★+): Monday 24 Aug, 11PM (local time) - 3.5ft (1.0m), 10s period with SSE swell.
Best Forecast Surf Conditions for Kosi Bay this week:
The surf forecast for Kosi Bay over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Monday (Aug 24) at 11PM. The primary swell is predicted to be 1.0m and 10s period with a secondary swell of 0.2m and 13s. Another secondary swell of 0.4m and 3s is also forecast. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Kosi Bay in the next 16 days are 2.1m 18s and forecast to arrive on Thursday (Aug 27) at 2AM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.0m 4s period and expected on Saturday (Aug 22) at 5PM.
| Wave Type | Time (SAST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 11PM (Mon 24th Aug) | 3.5ft (1.0m) 10s |
| Best Surf | 5AM (Sat 29th Aug) | 3.5ft (1.1m) 13s |
| Most Powerful | 2AM (Thu 27th Aug) | 7ft (2.1m) 18s |
Table - best surf conditions forecast for Kosi Bay 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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