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Kua Bay Surf Forecast
/ HAW – Big Island (60 breaks) / Hawaii (267 breaks) /
Surf Forecasts:
Kua Bay surfForecast / HAW – Big Island / USA
48hr Weather and Surf, issued 1 pm Monday 18 May 2026 HSTForecast update in hr min s Forecast update imminent
Kua Bay surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Kua Bay sea temperature is
26.2° C
(Which is 1.0°C warmer than normal for this time of year)How big are the waves at Kua Bay today?
The current surf forecast for Kua Bay at 8PM is: 0.3m 14s primary swell from a Southwest direction (forecast issued at 01:00pm May 18). An open ocean swell of 0.9m 6s is not directed at the surf break. The wind direction is predicted to be glassy.
| Time (HST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (18 May) | 0.5ft (0.1m) | 20s |
| Afternoon (18 May) | 1ft (0.3m) | 19s |
| Evening (18 May) | 1ft (0.3m) | 14s |
Table - waves today at Kua Bay. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastModerate rain (total 16mm), heaviest on Mon afternoon. Warm (max 27°C on Mon afternoon, min 24°C on Mon night). Wind will be generally light. | ||||||||||||||||||||||||
Mon 18 | Tuesday 19 | Wednesday 20 | Thu 21 | |||||||||||||||||||||
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 | |
Swell Height Map |    |    |    |    | ||||||||||||||||||||
NE 7 | SW 19 | SW 19 | SW 14 | NE 5 | N 6 | NE 6 | SSW 18 | NE 6 | NE 6 | SW 14 | SW 14 | SSW 14 | SSW 14 | NNE 5 | SW 16 | NNW 12 | NE 6 | NNW 12 | NNE 6 | NE 6 | NE 6 | SW 13 | SW 14 | |
0 | 59 | 15 | 32 | 0 | 12 | 0 | 0 | 0 | 0 | 7 | 7 | 0 | 0 | 17 | 10 | 14 | 51 | 14 | 0 | 49 | 52 | 7 | 8 | |
Wind (km/h) | ||||||||||||||||||||||||
cross-on | cross-off | cross-off | glassy | glassy | glassy | glassy | glassy | cross | cross-on | cross | glassy | glassy | glassy | glassy | glassy | cross-on | cross-on | glassy | cross | glassy | cross | cross | cross | |
High Tide | 5:37PM0.93m | 5:26AM0.30m | 6:28PM0.88m | 6:32AM0.28m | 7:22PM0.82m | 7:56AM0.29m | ||||||||||||||||||
Low Tide | 10:03AM-0.01m | 1:02AM0.14m | 10:48AM0.03m | 2:03AM0.14m | 11:37AM0.09m | 3:05AM0.14m | ||||||||||||||||||
 |  | |  | | |  |  | | | | | | |  | | | | | |  | | | | |
 | — | — | — | — | — | — | 5:47 | — | — | — | — | — | — | — | 5:46 | — | — | — | — | — | — | — | 5:46 | — |
 | — | — | 6:52 | — | — | — | — | — | — | — | 6:53 | — | — | — | — | — | — | — | 6:53 | — | — | — | — | 6:54 |
— | 2 | 3 | 1 | 1 | 3 | 1 | — | — | 1 | 1 | 1 | 1 | 1 | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 27 | 27 | 26 | 26 | 25 | 24 | 25 | 26 | 27 | 26 | 26 | 25 | 25 | 25 | 25 | 26 | 26 | 26 | 26 | 26 | 25 | 25 | 25 | 25 |
30 | 29 | 29 | 30 | 29 | 28 | 28 | 29 | 29 | 29 | 30 | 29 | 28 | 28 | 28 | 29 | 29 | 29 | 29 | 28 | 28 | 27 | 26 | 27 | |
Swell 1 Height (m) Direction Period (s) | NE 7 | NE 6 | NE 6 | NE 6 | NE 5 | NE 5 | NE 6 | NE 6 | NE 6 | NE 6 | NE 6 | NE 6 | NE 6 | NNE 5 | NE 8 | NE 6 | NE 8 | NE 8 | SSW 13 | NNE 6 | ENE 9 | ENE 8 | S 16 | S 16 |
 kJ | 52 | 66 | 64 | 51 | 28 | 13 | 29 | 29 | 40 | 45 | 42 | 62 | 34 | 18 | 32 | 58 | 104 | 34 | 18 | 57 | 29 | 28 | 20 | 20 |
Swell 2 Height (m) Direction Period (s) | SSW 19 | SW 19 | SSW 13 | SW 14 | SSW 13 | N 6 | SSW 15 | SSW 18 | SSW 14 | SSW 14 | SSW 14 | SSW 15 | NE 8 | NE 8 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | NNW 12 | NE 9 | SSW 13 | SSW 16 | SW 13 | SW 14 |
| kJ | 37 | 59 | 17 | 32 | 17 | 12 | 23 | 30 | 19 | 20 | 20 | 44 | 15 | 17 | 41 | 20 | 20 | 20 | 14 | 37 | 17 | 26 | 7 | 8 |
Swell 3 Height (m) Direction Period (s) | SSW 13 | SSW 13 | SW 19 | ENE 8 | NNE 6 | ENE 8 | SSW 14 | SSW 14 | SSW 18 | SSW 14 | SW 14 | SW 14 | SSW 14 | SSW 14 | SW 16 | SW 16 | NNW 12 | NNW 12 | SW 16 | SSW 13 | N 11 | SSW 13 | N 11 | N 11 |
| kJ | 17 | 17 | 15 | 6 | 4 | 6 | 18 | 20 | 31 | 20 | 7 | 7 | 41 | 41 | 10 | 10 | 14 | 14 | 10 | 17 | 9 | 17 | 2 | 2 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | NNE 5 | — | — | NE 6 | NE 8 | — | NE 6 | NE 6 | NE 6 | NE 8 |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 17 | — | — | 51 | 145 | — | 49 | 52 | 88 | 145 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 100 | 30 | 4 | 39 | 96 | 14 | 14 | 14 | 100 | 103 | 100 | 14 | 100 | 100 | 20 | 14 | 4 | 112 | 14 | 4 | 4 | 20 | 19 | 4 |
Best forecast wave conditions in Big Island | ||||||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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