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Surf Forecasts:
Waimanu Bay surfForecast / HAW – Big Island / USA
48hr Weather and Surf, issued 1 am Monday 08 Dec 2025 HSTForecast update in hr min s Forecast update imminent
Waimanu Bay surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Waimanu Bay sea temperature is
25.6° C
(Which is normal for this time of year)How big are the waves at Waimanu Bay today?
The current surf forecast for Waimanu Bay at 8AM is: 0.9m 12s primary swell from a North-northwest direction and 0.8m 8s secondary swell from a East-northeast direction, 0.8m 8s secondary swell from a East-southeast direction (forecast issued at 01:00am December 08). The wind direction is predicted to be cross-shore.
| Time (HST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (08 Dec) | 2.5ft (0.8m) | 12s |
| Afternoon (08 Dec) | 3.5ft (1.1m) | 8s |
| Evening (08 Dec) | 3ft (0.9m) | 8s |
Table - waves today at Waimanu Bay. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Monday 08 | Tuesday 09 | Wednesday 10 | ||||||||||||||||||||||
| 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) (?) | 12 | 12 | 12 | 12 | 12 | 11 | 11 | 8 | 8 | 8 | 8 | 15 | 14 | 14 | 15 | 16 | 17 | 17 | 17 | 16 | 16 | 16 | 15 | 14 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 267 | 206 | 203 | 199 | 153 | 147 | 95 | 102 | 121 | 105 | 105 | 134 | 169 | 214 | 266 | 471 | 805 | 522 | 1320 | 1318 | 1255 | 1339 | 1088 | 1016 |
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- on | cross- on | cross- on | glass | cross | cross- off | glass | glass | cross | cross- off | cross- off | glass |
High Tide / height (m) | 5:45AM 0.99 | 5:02PM 0.42 | 6:28AM 0.91 | 6:16PM 0.41 | 7:09AM 0.83 | |||||||||||||||||||
Low Tide / height (m) | 10:05PM 0.04 | 1:02PM 0.31 | 10:46PM 0.13 | 1:56PM 0.30 | 11:30PM 0.24 | 2:48PM 0.28 | ||||||||||||||||||
Monday 08 | Tuesday 09 | Wednesday 10 | ||||||||||||||||||||||
| Sunrise | - | - | - | 6:45 | - | - | - | - | - | - | - | 6:46 | - | - | - | - | - | - | - | 6:46 | - | - | - | - |
| Sunset | - | - | - | - | - | - | 5:43 | - | - | - | - | - | - | - | 5:43 | - | - | - | - | - | - | - | 5:43 | - |
 | | |  | | | | | | | | | | | |  | | | | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 23 | 23 | 22 | 23 | 25 | 25 | 24 | 23 | 23 | 23 | 23 | 23 | 25 | 25 | 24 | 23 | 23 | 23 | 23 | 23 | 24 | 25 | 25 | 23 |
| Feels °C (?) | 23 | 22 | 21 | 22 | 23 | 24 | 25 | 24 | 22 | 22 | 23 | 23 | 26 | 26 | 26 | 25 | 25 | 25 | 25 | 25 | 24 | 26 | 28 | 25 |
- 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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