Nanakuli Blackrocks surf forecast from 7 Oct 2026:
- Best quality surf: Wednesday 7 Oct, 11PM (local time) - 4ft (1.2m), 13s period, NNW swell with cross-offshore winds.
- Most powerful swell: Tuesday 13 Oct, 2AM (local time) - 4.5ft (1.3m), 16s period, NW swell with 793 kJ wave energy.
- Next surfable swell (1★+): Wednesday 7 Oct, 11PM (local time) - 4ft (1.2m), 13s period with NNW swell.
Best Forecast Surf Conditions for Nanakuli Blackrocks this week:
The surf forecast for Nanakuli Blackrocks over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Wednesday (Oct 07) at 11PM. The primary swell is predicted to be 1.2m and 13s period with a secondary swell of 0.9m and 14s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Nanakuli Blackrocks in the next 16 days are 1.3m 16s and forecast to arrive on Tuesday (Oct 13) at 2AM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.6m 8s period and expected on Tuesday (Oct 13) at 2AM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 11PM (Wed 7th Oct) | 4ft (1.2m) 13s |
| Best Surf | 11PM (Wed 7th Oct) | 4ft (1.2m) 13s |
| Most Powerful | 2AM (Tue 13th Oct) | 4.5ft (1.3m) 16s |
Table - best surf conditions forecast for Nanakuli Blackrocks 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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