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Kahalu'u Beach Park Surf Forecast
/ HAW – Big Island (60 breaks) / Hawaii (267 breaks) /
Surf Forecasts:
Kahalu'u Beach Park surfForecast / HAW – Big Island / USA
48hr Weather and Surf, issued 7 pm Tuesday 19 May 2026 HSTForecast update in hr min s Forecast update imminent
Kahalu'u Beach Park surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Kahalu'u Beach Park sea temperature is
26.5° C
(Which is 1.3°C warmer than normal for this time of year)How big are the waves at Kahalu'u Beach Park today?
The current surf forecast for Kahalu'u Beach Park at 3AM is: 0.6m 14s primary swell from a South-southwest direction and 0.2m 16s secondary swell from a South-southwest direction, 0.3m 9s secondary swell from a South direction (forecast issued at 07:00pm May 19). The wind direction is predicted to be glassy and the swell rating is 2.
| Time (HST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (20 May) | 1.5ft (0.4m) | 18s |
| Afternoon (20 May) | 1.5ft (0.4m) | 18s |
| Evening (20 May) | 1.5ft (0.4m) | 17s |
Table - waves today at Kahalu'u Beach Park. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastModerate rain (total 13mm), heaviest on Tue night. Warm (max 27°C on Wed morning, min 24°C on Thu night). Wind will be generally light. | ||||||||||||||||||||||||
Tue 19 | Wednesday 20 | Thursday 21 | Fri 22 | |||||||||||||||||||||
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 |    |    |    |    | ||||||||||||||||||||
SSW 15 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 18 | SSW 14 | SSW 18 | SSW 18 | SSW 17 | S 16 | SSW 16 | S 16 | S 16 | S 16 | S 16 | SSW 15 | SSW 15 | SSW 15 | S 15 | SSW 15 | SSW 14 | S 18 | S 18 | |
242 | 239 | 160 | 160 | 160 | 113 | 156 | 107 | 102 | 102 | 134 | 147 | 132 | 132 | 186 | 122 | 174 | 172 | 172 | 157 | 167 | 163 | 103 | 97 | |
Wind (km/h) | ||||||||||||||||||||||||
cross-on | glassy | cross | cross-on | glassy | on | on | cross-on | cross-on | glassy | glassy | glassy | cross-off | cross | cross-on | on | on | glassy | cross-off | cross-off | off | cross | cross-on | on | |
High Tide | 6:27PM0.88m | 6:27AM0.28m | 7:20PM0.82m | 7:53AM0.29m | 8:16PM0.75m | 9:37AM0.33m | ||||||||||||||||||
Low Tide | 2:04AM0.15m | 11:33AM0.09m | 3:06AM0.15m | 12:32PM0.16m | 4:01AM0.14m | 1:51PM0.25m | ||||||||||||||||||
 |  | | |  |  | | |  | | | |  | | | | |  | | | | | | | |
 | — | — | — | — | 5:46 | — | — | — | — | — | — | — | 5:46 | — | — | — | — | — | — | — | 5:46 | — | — | — |
 | 6:52 | — | — | — | — | — | — | — | 6:53 | — | — | — | — | — | — | — | 6:53 | — | — | — | — | — | — | 6:53 |
2 | 1 | 1 | 2 | 1 | — | — | 1 | 1 | 1 | 1 | 1 | — | — | — | 1 | 1 | — | — | — | — | — | — | 1 | |
Temp °C | 26 | 26 | 25 | 25 | 25 | 26 | 27 | 26 | 26 | 26 | 25 | 25 | 25 | 26 | 26 | 26 | 26 | 25 | 25 | 24 | 24 | 24 | 25 | 25 |
29 | 30 | 29 | 28 | 29 | 29 | 30 | 29 | 29 | 30 | 29 | 28 | 28 | 29 | 28 | 28 | 28 | 28 | 27 | 26 | 26 | 26 | 27 | 27 | |
Swell 1 Height (m) Direction Period (s) | SSW 15 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 13 | SSW 13 | S 16 | SSW 16 | S 16 | S 16 | S 16 | S 16 | SSW 15 | SSW 15 | SSW 15 | S 15 | SSW 15 | SSW 14 | S 14 | S 14 |
 kJ | 242 | 239 | 160 | 160 | 160 | 113 | 156 | 107 | 102 | 102 | 134 | 147 | 132 | 132 | 186 | 122 | 174 | 172 | 172 | 157 | 167 | 163 | 103 | 97 |
Swell 2 Height (m) Direction Period (s) | SSW 10 | S 10 | SW 16 | SSW 16 | SW 16 | SSW 18 | SSW 18 | SSW 18 | SSW 18 | SSW 17 | SSW 13 | SSW 13 | SSW 13 | SSW 13 | S 13 | SSW 12 | SSW 12 | SSW 12 | SSW 12 | SW 12 | S 18 | S 18 | S 18 | S 18 |
| kJ | 18 | 17 | 10 | 25 | 41 | 103 | 62 | 103 | 102 | 96 | 57 | 56 | 57 | 55 | 13 | 29 | 28 | 48 | 57 | 51 | 59 | 101 | 99 | 97 |
Swell 3 Height (m) Direction Period (s) | SW 18 | NW 11 | NW 11 | NW 11 | S 9 | SW 16 | SSW 16 | SSW 16 | S 14 | S 14 | NW 10 | WNW 9 | WNW 9 | NNW 9 | SW 15 | SSE 13 | NW 9 | NNW 9 | S 19 | SE 12 | SE 12 | SSE 12 | S 11 | S 11 |
| kJ | 12 | 5 | 5 | 4 | 7 | 41 | 25 | 25 | 34 | 35 | 15 | 8 | 8 | 8 | 8 | 16 | 13 | 8 | 30 | 6 | 6 | 14 | 9 | 9 |
Wind waves Height (m) Direction Period (s) | NW 8 | NNW 8 | S 10 | S 9 | — | — | SSW 9 | SSW 9 | — | — | NNW 5 | NW 5 | — | — | NW 9 | WNW 3 | NW 5 | — | — | NW 5 | — | — | SW 3 | WSW 3 |
| kJ | 3 | 7 | 16 | 15 | — | — | 8 | 8 | — | — | 2 | 6 | — | — | 21 | 1 | 6 | — | — | 6 | — | — | 3 | 3 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 125 | 0 | 11 | 13 | 0 | 14 | 128 | 25 | 25 | 0 | 0 | 0 | 0 | 1 | 25 | 25 | 13 | 0 | 0 | 0 | 0 | 1 | 11 | 11 |
Best forecast wave conditions in Big Island | ||||||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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