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Kahuku Ranch surfForecast / HAW – Big Island / USA
48hr Weather and Surf, issued 1 am Saturday 02 Aug 2025 HST
How big are the waves at Kahuku Ranch today?
The current surf forecast for Kahuku Ranch at 5AM is: 0.9m 14s primary swell from a South direction and 0.3m 13s secondary swell from a West-northwest direction (forecast issued at 01:00am August 02). An open ocean swell of 2.4m 8s is not directed at the surf break. The wind direction is predicted to be cross-offshore.
| Time (HST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (02 Aug) | 2.5ft (0.8m) | 14s |
| Afternoon (02 Aug) | 2.5ft (0.7m) | 13s |
| Evening (02 Aug) | 2.5ft (0.7m) | 13s |
Table - waves today at Kahuku Ranch. (Swell directed towards the surf break)
Saturday 02 | Sunday 03 | Monday 04 | ||||||||||||||||||||||
| 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) (?) | 14 | 14 | 14 | 14 | 14 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 18 | 18 | 18 | 17 | 16 | 16 | 16 | 16 | 16 | 15 | 15 | 15 |
Wave (?)Graph  | ||||||||||||||||||||||||
| Energy (?) | 378 | 373 | 362 | 356 | 280 | 215 | 212 | 205 | 205 | 185 | 184 | 219 | 218 | 270 | 366 | 430 | 488 | 534 | 529 | 564 | 588 | 519 | 490 | 477 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off |
High Tide / height (m) | 11:22AM 0.71 | 9:01PM 0.41 | 12:28PM 0.76 | 11:27PM 0.38 | 1:18PM 0.82 | |||||||||||||||||||
Low Tide / height (m) | 3:07AM 0.21 | 7:31PM 0.41 | 4:14AM 0.21 | 8:15PM 0.35 | 5:25AM 0.19 | |||||||||||||||||||
Saturday 02 | Sunday 03 | Monday 04 | ||||||||||||||||||||||
| Sunrise | - | - | - | 6:00 | - | - | - | - | - | - | - | 6:00 | - | - | - | - | - | - | - | 6:00 | - | - | - | - |
| Sunset | - | - | - | - | - | - | 6:57 | - | - | - | - | - | - | - | 6:57 | - | - | - | - | - | - | - | 6:55 | - |
 |  | |  |  | | | | | | | | | | | | | | | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 25 | 24 | 24 | 25 | 26 | 27 | 26 | 25 | 25 | 24 | 24 | 26 | 27 | 27 | 26 | 25 | 25 | 25 | 25 | 25 | 27 | 27 | 26 | 25 |
| Feels °C (?) | 23 | 21 | 22 | 22 | 22 | 25 | 24 | 22 | 22 | 21 | 22 | 23 | 24 | 25 | 24 | 21 | 22 | 23 | 23 | 22 | 24 | 26 | 25 | 24 |
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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 - Big Island
Continuing clean conditions at Kahuku Ranch (calm at Hawaiian Ocean View wx 14 km from Kahuku Ranch). 0.8m 14s groundswell from the S with a 0.3m 13s groundswell from the WNW. 2 swells combining to make bigger set waves.
Actual: 54 min ago
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