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Nanakuli Blackrocks Surf Forecast
/ HAW – Oahu (122 breaks) / Hawaii (267 breaks) /
Surf Forecasts:
Nanakuli Blackrocks surfForecast / HAW – Oahu / USA
48hr Weather and Surf, issued 1 am Tuesday 14 Oct 2025 HST
How big are the waves at Nanakuli Blackrocks today?
The current surf forecast for Nanakuli Blackrocks at 3AM is: 1.4m 15s primary swell from a Northwest direction and 0.5m 16s secondary swell from a West-northwest direction (forecast issued at 01:00am October 14). The wind direction is predicted to be cross-offshore and the swell rating is 4.
| Time (HST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (14 Oct) | 4.5ft (1.3m) | 15s |
| Afternoon (14 Oct) | 4.5ft (1.3m) | 14s |
| Evening (14 Oct) | 4ft (1.2m) | 14s |
Table - waves today at Nanakuli Blackrocks. (Swell directed towards the surf break)
Tuesday 14 | Wednesday 15 | Thursday 16 | ||||||||||||||||||||||
| 11 PM | 2 AM | 5 AM | 8 AM | 11 AM | 2 PM | 5 PM | 8 PM | 11 PM | 2 AM | 5 AM | 8 AM | 11 AM | 2 PM | 5 PM | 8 PM | 11 PM | 2 AM | 5 AM | 8 AM | 11 AM | 2 PM | 5 PM | 8 PM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 16 | 16 | 15 | 15 | 15 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 13 | 14 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 989 | 952 | 809 | 777 | 757 | 676 | 648 | 648 | 573 | 557 | 526 | 526 | 541 | 573 | 658 | 736 | 736 | 736 | 658 | 648 | 565 | 541 | 458 | 465 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | off | off | off | off | cross- off | off | off | off | off | off | off | off | off | off | off | off | off | off | off | off | off | off | off | off |
High Tide / height (m) | 11:17PM 0.20 | 11:01AM 0.62 | 12:28AM 0.27 | 11:57AM 0.60 | 1:10AM 0.35 | 12:42PM 0.57 | ||||||||||||||||||
Low Tide / height (m) | 2:30AM 0.18 | 6:59PM 0.13 | 4:35AM 0.21 | 7:19PM 0.11 | 6:03AM 0.21 | 7:38PM 0.10 | ||||||||||||||||||
Tuesday 14 | Wednesday 15 | Thursday 16 | ||||||||||||||||||||||
| Sunrise | - | - | - | 6:26 | - | - | - | - | - | - | - | 6:28 | - | - | - | - | - | - | - | 6:28 | - | - | - | - |
| Sunset | - | - | - | - | - | - | 6:07 | - | - | - | - | - | - | - | 6:07 | - | - | - | - | - | - | - | 6:07 | - |
 | | |  | |  | | |  | | | | | | | |  | | | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 25 | 25 | 24 | 25 | 27 | 27 | 27 | 26 | 25 | 25 | 24 | 25 | 27 | 27 | 27 | 25 | 25 | 25 | 25 | 25 | 27 | 28 | 27 | 26 |
| Feels °C (?) | 27 | 27 | 26 | 27 | 29 | 28 | 27 | 27 | 25 | 25 | 24 | 25 | 25 | 25 | 25 | 24 | 25 | 26 | 27 | 26 | 26 | 27 | 26 | 27 |
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Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
Recent Eyeball Surf Reports for HAW - Oahu
Continuing clean conditions at Nanakuli Blackrocks (light winds from the NE at Kalaeloa Airport 9 km from Nanakuli Blackrocks). 0.8m 15s groundswell from the NW with a 0.4m 15s groundswell, also from the NW. 2 swells combining to make bigger set waves.
2 h 7 min ago
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