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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 am Wednesday 20 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
26.0° C
(Which is slightly warmer than usual)How big are the waves at Waimanu Bay today?
The current surf forecast for Waimanu Bay at 12PM is: 2.2m 9s primary swell from a East-northeast direction and 0.5m 12s secondary swell from a North-northwest direction, 0.1m 14s secondary swell from a Southeast direction (forecast issued at 07:00am May 20). The wind direction is predicted to be cross-onshore.
| Time (HST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (20 May) | 7ft (2.1m) | 8s |
| Afternoon (20 May) | 7ft (2.2m) | 9s |
| Evening (20 May) | 7ft (2.2m) | 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 Wed morning, min 22°C on Thu night). Mainly fresh winds. | ||||||||||||||||||||||||
Wednesday 20 | Thursday 21 | Friday 22 | Sat 23 | |||||||||||||||||||||
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 | 11 PM | 2 AM | |
Swell Height Map |    |    |    |    | ||||||||||||||||||||
E 8 | ENE 8 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 8 | ENE 8 | |
412 | 522 | 676 | 724 | 724 | 724 | 708 | 692 | 754 | 772 | 809 | 744 | 761 | 858 | 887 | 793 | 730 | 671 | 656 | 587 | 537 | 564 | 551 | 616 | |
Wind (km/h) | ||||||||||||||||||||||||
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 | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross | cross | |
High Tide | 4:45AM0.42m | 6:38PM0.95m | 5:56AM0.39m | 7:31PM0.88m | 7:44AM0.40m | 8:25PM0.81m | ||||||||||||||||||
Low Tide | 10:46AM0.08m | 2:13AM0.32m | 11:36AM0.17m | 3:16AM0.30m | 12:39PM0.28m | |||||||||||||||||||
 |  | | |  |  | | | | | | | | | | | | | | | | | | | |
 | 5:43 | — | — | — | — | — | — | — | 5:43 | — | — | — | — | — | — | — | 5:43 | — | — | — | — | — | — | 5:43 |
 | — | — | — | — | 6:52 | — | — | — | — | — | — | — | 6:53 | — | — | — | — | — | — | — | 6:53 | — | — | 6:53 |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 24 | 25 | 25 | 25 | 24 | 24 | 23 | 23 | 23 | 24 | 25 | 25 | 24 | 23 | 23 | 22 | 22 | 23 | 24 | 24 | 23 | 23 | 23 | 22 |
23 | 24 | 23 | 23 | 22 | 22 | 21 | 21 | 21 | 21 | 22 | 22 | 21 | 19 | 20 | 19 | 19 | 20 | 21 | 21 | 20 | 20 | 20 | 19 | |
Swell 1 Height (m) Direction Period (s) | NNW 11 | NNW 11 | NNW 12 | NNW 12 | NNW 12 | NNW 11 | NNW 11 | NNW 11 | NNW 11 | NNW 11 | NNW 10 | NNW 10 | NNW 10 | NNW 10 | NNW 10 | NNW 10 | NNW 10 | NNW 9 | NW 11 | NNW 10 | NNW 10 | NNW 11 | NW 11 | NW 11 |
 kJ | 47 | 48 | 55 | 79 | 53 | 46 | 46 | 45 | 45 | 44 | 21 | 20 | 19 | 9 | 9 | 9 | 9 | 8 | 5 | 10 | 11 | 23 | 30 | 30 |
Swell 2 Height (m) Direction Period (s) | NNW 13 | SE 15 | SE 14 | SE 14 | — | SE 14 | SE 14 | — | SSE 13 | SSE 13 | SSE 13 | NW 10 | SSE 13 | SSE 13 | SSE 12 | NNW 10 | NNW 10 | NW 11 | NW 9 | NNW 10 | NW 10 | NW 11 | NW 11 | N 21 |
| kJ | 17 | 8 | 8 | 8 | — | 8 | 7 | — | 17 | 17 | 17 | 25 | 16 | 16 | 15 | 9 | 9 | 5 | 3 | 20 | 27 | 29 | 30 | 8 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | SSE 13 | — | — | — | SE 12 | SSE 12 | SE 12 | SSE 12 | SE 12 | SE 12 | SE 12 | SE 12 | N 21 |
| kJ | — | — | — | — | — | — | — | — | — | — | — | 17 | — | — | — | 6 | 14 | 6 | 14 | 6 | 6 | 6 | 5 | 8 |
Wind waves Height (m) Direction Period (s) | E 8 | ENE 8 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 8 | ENE 8 |
| kJ | 412 | 522 | 676 | 724 | 724 | 724 | 708 | 692 | 754 | 772 | 809 | 744 | 761 | 858 | 887 | 793 | 730 | 671 | 656 | 587 | 537 | 564 | 551 | 616 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 69 | 66 | 101 | 107 | 107 | 58 | 58 | 58 | 58 | 58 | 58 | 101 | 66 | 66 | 58 | 58 | 58 | 68 | 68 | 66 | 66 | 58 | 58 | 58 |
Best forecast wave conditions in Big Island | ||||||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||||||
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