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Surf Forecasts:
Waimanu Bay surfForecast / HAW – Big Island / USA
48hr Weather and Surf, issued 1 pm Saturday 06 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
25.8° C
(Which is slightly warmer than usual)How big are the waves at Waimanu Bay today?
The current surf forecast for Waimanu Bay at 5PM is: 1.3m 13s primary swell from a North-northwest direction and 1.6m 7s secondary swell from a East direction (forecast issued at 01:00pm December 06). The wind direction is predicted to be cross-onshore.
| Time (HST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (06 Dec) | 4.5ft (1.4m) | 14s |
| Afternoon (06 Dec) | 4.5ft (1.3m) | 14s |
| Evening (06 Dec) | 4.5ft (1.3m) | 13s |
Table - waves today at Waimanu Bay. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Saturday 06 | Sunday 07 | Monday 08 | Tuesday 09 | |||||||||||||||||||||
| 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 | 11 PM | 2 AM | 5 AM | 8 AM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 14 | 14 | 13 | 13 | 13 | 13 | 13 | 8 | 12 | 12 | 12 | 13 | 12 | 12 | 12 | 12 | 12 | 11 | 8 | 8 | 8 | 8 | 8 | 8 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 777 | 643 | 634 | 586 | 491 | 476 | 454 | 229 | 283 | 294 | 292 | 307 | 267 | 206 | 203 | 199 | 156 | 147 | 147 | 147 | 121 | 127 | 127 | 123 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- on | cross- on | cross- on | cross | cross | cross | cross | cross- on | cross- on | cross- on | cross- on | cross | cross | cross | cross | cross | cross- on | cross- on | cross- on | cross | cross | cross | cross | cross |
High Tide / height (m) | 3:19PM 0.45 | 5:02AM 1.05 | 4:06PM 0.44 | 5:45AM 0.99 | 5:02PM 0.42 | 6:28AM 0.91 | ||||||||||||||||||
Low Tide / height (m) | 11:18AM 0.31 | 9:24PM -0.02 | 12:09PM 0.31 | 10:05PM 0.04 | 1:02PM 0.31 | 10:46PM 0.13 | ||||||||||||||||||
Saturday 06 | Sunday 07 | Monday 08 | Tuesday 09 | |||||||||||||||||||||
| Sunrise | - | - | - | - | - | - | - | 6:45 | - | - | - | - | - | - | - | 6:45 | - | - | - | - | - | - | - | 6:46 |
| Sunset | - | - | 5:42 | - | - | - | - | - | - | - | 5:42 | - | - | - | - | - | - | - | 5:43 | - | - | - | - | - |
 | |  |  | | |  | | | |  | | | | | | | | | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | 1 | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 26 | 26 | 24 | 23 | 23 | 23 | 23 | 23 | 25 | 24 | 24 | 23 | 23 | 22 | 22 | 23 | 25 | 25 | 24 | 23 | 23 | 23 | 22 | 23 |
| Feels °C (?) | 25 | 26 | 24 | 23 | 23 | 23 | 23 | 23 | 25 | 24 | 24 | 22 | 23 | 22 | 21 | 22 | 24 | 24 | 24 | 22 | 23 | 23 | 22 | 23 |
- 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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