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Surf Forecasts:
Kapoho Bay surfForecast / HAW – Big Island / USA
48hr Weather and Surf, issued 1 am Friday 20 Mar 2026 HSTForecast update in hr min s Forecast update imminent
Kapoho Bay surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Kapoho Bay sea temperature is
24.5° C
(Which is normal for this time of year)How big are the waves at Kapoho Bay today?
The current surf forecast for Kapoho Bay at 9AM is: 0.7m 13s primary swell from a South direction and 0.8m 7s secondary swell from a East-southeast direction (forecast issued at 01:00am March 20). An open ocean swell of 1.0m 10s is not directed at the surf break. The wind direction is predicted to be cross-shore.
| Time (HST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (20 Mar) | 2.5ft (0.7m) | 13s |
| Afternoon (20 Mar) | 2ft (0.6m) | 13s |
| Evening (20 Mar) | 2ft (0.6m) | 12s |
Table - waves today at Kapoho Bay. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Friday 20 | Saturday 21 | Sunday 22 | ||||||||||||||||||||||
| 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) (?) | 13 | 13 | 13 | 13 | 13 | 13 | 12 | 12 | 12 | 12 | 19 | 19 | 18 | 12 | 12 | 18 | 7 | 17 | 17 | 17 | 16 | 16 | 16 | 7 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 171 | 168 | 168 | 166 | 163 | 161 | 113 | 110 | 106 | 102 | 124 | 119 | 110 | 69 | 68 | 103 | 56 | 166 | 166 | 162 | 89 | 84 | 83 | 77 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross | cross | cross | cross | cross- on | cross- on | cross- on | cross | cross | cross | cross | cross | cross | cross | cross | cross- off | off | cross- off | cross- off | glass | cross- on | cross | cross | cross |
High Tide / height (m) | 3:52AM 0.84 | 4:38PM 0.96 | 4:20AM 0.76 | 5:21PM 0.96 | 4:49AM 0.67 | 6:11PM 0.94 | ||||||||||||||||||
Low Tide / height (m) | 10:01PM 0.17 | 10:05AM 0.03 | 10:47PM 0.23 | 10:33AM 0.03 | 11:37PM 0.30 | 11:05AM 0.05 | ||||||||||||||||||
Friday 20 | Saturday 21 | Sunday 22 | ||||||||||||||||||||||
| Sunrise | - | - | - | 6:22 | - | - | - | - | - | - | - | 6:22 | - | - | - | - | - | - | - | 6:20 | - | - | - | - |
| Sunset | - | - | - | - | - | - | 6:30 | - | - | - | - | - | - | - | 6:30 | - | - | - | - | - | - | - | 6:30 | - |
 |  | |  | | | | | |  | |  | | | |  | | |  | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 1 | - | - | 1 | - | - | - | - | - |
| Temp. °C | 24 | 23 | 23 | 24 | 25 | 25 | 25 | 24 | 24 | 24 | 24 | 24 | 25 | 25 | 25 | 24 | 24 | 24 | 23 | 23 | 24 | 24 | 24 | 23 |
| Feels °C (?) | 24 | 23 | 23 | 25 | 25 | 24 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 26 | 25 | 26 | 25 | 24 | 26 | 24 | 24 | 22 | 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)
FREE! Surf-Forecast.com widget for your website
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