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Waimanu Bay Surf Forecast
/ HAW – Big Island (60 breaks) / Hawaii (267 breaks) /
Surf Forecasts:
Waimanu Bay surfForecast / HAW – Big Island / USA
48hr Weather and Surf, issued 7 pm Thursday 21 May 2026 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
25.9° C
(Which is slightly warmer than usual)How big are the waves at Waimanu Bay today?
The current surf forecast for Waimanu Bay at 10PM is: 2.4m 9s primary swell from a East-northeast direction and 0.2m 10s secondary swell from a North-northwest direction (forecast issued at 07:00pm May 21). An open ocean swell of 0.2m 12s is not directed at the surf break. The wind direction is predicted to be cross-onshore.
| Time (HST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (21 May) | - | - |
| Afternoon (21 May) | 7ft (2.2m) | 9s |
| Evening (21 May) | 8ft (2.4m) | 9s |
Table - waves today at Waimanu Bay. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastMostly dry. Warm (max 25°C on Sun morning, min 22°C on Thu night). Mainly fresh winds. | ||||||||||||||||||||||||
Thu 21 | Friday 22 | Saturday 23 | Sun 24 | |||||||||||||||||||||
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 | 11 AM | 2 PM | |
Swell Height Map |    |    |    |    | ||||||||||||||||||||
ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | NE 9 | NE 9 | NE 8 | NE 8 | NE 8 | NE 8 | NE 8 | ENE 8 | ENE 8 | |
767 | 858 | 858 | 793 | 730 | 671 | 656 | 587 | 601 | 601 | 601 | 616 | 616 | 616 | 630 | 715 | 715 | 613 | 567 | 534 | 490 | 490 | 581 | 567 | |
Wind (km/h) | ||||||||||||||||||||||||
cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | |
High Tide | 7:31PM0.88m | 7:44AM0.40m | 8:25PM0.81m | 9:55AM0.45m | 9:17PM0.74m | 11:27AM0.55m | ||||||||||||||||||
Low Tide | 3:16AM0.30m | 12:39PM0.28m | 4:06AM0.27m | 2:11PM0.37m | 4:45AM0.23m | |||||||||||||||||||
 |  |  | |  | |  | | | | | | | | | | | | | | | | | | |
 | — | — | — | — | 5:43 | — | — | — | — | — | — | — | 5:43 | — | — | — | — | — | — | — | 5:43 | — | — | — |
 | 6:53 | — | — | — | — | — | — | — | 6:53 | — | — | — | — | — | — | — | 6:53 | — | — | — | — | — | — | 6:54 |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 24 | 23 | 23 | 23 | 22 | 23 | 24 | 24 | 23 | 23 | 23 | 22 | 22 | 23 | 24 | 24 | 23 | 23 | 22 | 22 | 22 | 23 | 25 | 25 |
20 | 19 | 20 | 21 | 19 | 20 | 21 | 20 | 20 | 20 | 20 | 19 | 19 | 19 | 20 | 20 | 20 | 20 | 19 | 20 | 20 | 20 | 22 | 23 | |
Swell 1 Height (m) Direction Period (s) | NNW 10 | NNW 10 | NNW 10 | NNW 10 | NNW 10 | NNW 9 | NW 11 | NNW 10 | NNW 10 | NNW 11 | NW 11 | NW 11 | NW 11 | NW 11 | NW 11 | NW 11 | NNW 16 | NNW 16 | NNW 15 | NNW 15 | NE 8 | NNW 13 | NNW 13 | NNW 13 |
 kJ | 19 | 9 | 9 | 9 | 9 | 8 | 5 | 10 | 11 | 23 | 30 | 30 | 30 | 30 | 29 | 29 | 102 | 99 | 86 | 142 | 490 | 120 | 116 | 113 |
Swell 2 Height (m) Direction Period (s) | SSE 13 | SSE 13 | SSE 12 | SE 12 | SE 12 | NW 11 | NW 9 | NNW 10 | SE 12 | SE 12 | NW 11 | N 21 | N 20 | NNW 19 | NNW 18 | NNW 17 | NW 10 | NW 10 | NW 10 | NW 10 | NNW 14 | NNW 10 | NNW 10 | NNW 10 |
| kJ | 16 | 16 | 15 | 6 | 6 | 5 | 3 | 20 | 6 | 6 | 30 | 8 | 7 | 35 | 31 | 59 | 28 | 27 | 27 | 26 | 134 | 9 | 9 | 9 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | NW 11 | SE 12 | SE 12 | — | — | SE 12 | SE 12 | NW 20 | SE 12 | SE 12 | NW 17 | NW 10 | NW 10 | NW 10 | NW 10 | NW 10 | NW 10 | NW 10 | NNW 10 |
| kJ | — | — | — | — | — | 5 | 6 | 6 | — | — | 5 | 5 | 15 | 6 | 5 | 77 | 28 | 27 | 27 | 26 | 16 | 24 | 15 | 9 |
Wind waves Height (m) Direction Period (s) | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | NE 9 | NE 9 | NE 8 | NE 8 | NE 8 | — | NE 8 | ENE 8 | ENE 8 |
| kJ | 767 | 858 | 858 | 793 | 730 | 671 | 656 | 587 | 601 | 601 | 601 | 616 | 616 | 616 | 630 | 715 | 715 | 613 | 567 | 534 | — | 490 | 581 | 567 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 134 | 107 | 68 | 66 | 58 | 58 | 68 | 68 | 66 | 66 | 68 | 66 | 58 | 60 | 58 | 58 | 470 | 462 | 66 | 58 | 58 | 58 | 58 | 58 |
Best forecast wave conditions in Big Island | ||||||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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Live Wind Speed (km/h)
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Ocean Swells (m)- Wind Speed (km/h)
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