K-40 surf forecast from 6 Sep 2026:
- Best quality surf: Thursday 10 Sep, 2AM (local time) - 2.5ft (0.8m), 17s period, SW swell with glassy winds.
- Most powerful swell: Monday 7 Sep, 5AM (local time) - 6ft (1.9m), 12s period, SSW swell with 1,125 kJ wave energy.
- Next surfable swell (1★+): Wednesday 9 Sep, 8PM (local time) - 2.5ft (0.8m), 17s period with SW swell.
Best Forecast Surf Conditions for K-40 this week:
The surf forecast for K-40 over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Wednesday (Sep 09) at 8PM. The primary swell is predicted to be 0.8m and 17s period with a secondary swell of 0.6m and 8s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at K-40 in the next 16 days are 1.9m 12s and forecast to arrive on Monday (Sep 07) at 5AM. Winds are predicted to be cross-shore at the time the swell arrives.
| Wave Type | Time (PDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8PM (Wed 9th Sep) | 2.5ft (0.8m) 17s |
| Best Surf | 2AM (Thu 10th Sep) | 2.5ft (0.8m) 17s |
| Most Powerful | 5AM (Mon 7th Sep) | 6ft (1.9m) 12s |
Table - best surf conditions forecast for K-40 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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