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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 am Sunday 17 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
26.1° C
(Which is 1.0°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 3PM is: 0.6m 15s primary swell from a South-southwest direction and 0.4m 6s secondary swell from a South direction (forecast issued at 07:00am May 17). The wind direction is predicted to be onshore.
| Time (HST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (17 May) | 1.5ft (0.5m) | 16s |
| Afternoon (17 May) | 2ft (0.6m) | 15s |
| Evening (17 May) | 2.5ft (0.7m) | 15s |
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 afternoon. Warm (max 27°C on Sun morning, min 25°C on Sun night). Wind will be generally light. | ||||||||||||||||||||||||
Sunday 17 | Monday 18 | Tuesday 19 | Wed 20 | |||||||||||||||||||||
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 |    |    |    |    | ||||||||||||||||||||
SSW 16 | SSW 16 | SSW 15 | SSW 16 | SSW 15 | SSW 15 | SSW 15 | SSW 14 | SSW 14 | SSW 14 | SSW 15 | SSW 16 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | |
144 | 137 | 135 | 137 | 196 | 193 | 188 | 183 | 183 | 180 | 246 | 277 | 125 | 123 | 166 | 233 | 236 | 180 | 180 | 160 | 239 | 236 | 210 | 213 | |
Wind (km/h) | ||||||||||||||||||||||||
glassy | cross | on | on | on | glassy | glassy | cross-on | cross-on | glassy | cross-on | cross-on | on | cross-on | on | glassy | glassy | glassy | cross-on | on | cross-on | cross-on | cross | glassy | |
High Tide | 3:40AM0.35m | 4:47PM0.94m | 4:28AM0.32m | 5:35PM0.92m | 5:22AM0.29m | 6:27PM0.88m | ||||||||||||||||||
Low Tide | 9:18AM-0.03m | 00:03AM0.14m | 10:00AM-0.01m | 1:02AM0.15m | 10:44AM0.03m | |||||||||||||||||||
 |  | |  |  |  |  | | | | |  | |  | | | | | | | | | | | |
 | 5:47 | — | — | — | — | — | — | — | 5:47 | — | — | — | — | — | — | — | 5:47 | — | — | — | — | — | — | 5:46 |
 | — | — | — | — | 6:52 | — | — | — | — | — | — | — | 6:52 | — | — | — | — | — | — | — | 6:52 | — | — | 6:53 |
— | — | — | — | 1 | 1 | — | — | — | — | — | 1 | 1 | 1 | — | — | — | — | — | 1 | 2 | 2 | 1 | 1 | |
Temp °C | 26 | 26 | 27 | 27 | 27 | 26 | 26 | 25 | 25 | 26 | 27 | 27 | 26 | 26 | 25 | 25 | 25 | 26 | 26 | 26 | 26 | 26 | 25 | 25 |
29 | 28 | 29 | 29 | 30 | 29 | 30 | 28 | 28 | 29 | 29 | 29 | 29 | 29 | 28 | 29 | 29 | 30 | 28 | 29 | 29 | 29 | 28 | 29 | |
Swell 1 Height (m) Direction Period (s) | SSW 16 | SSW 16 | SSW 15 | SSW 16 | SSW 15 | SSW 15 | SSW 15 | SSW 14 | SSW 14 | SSW 14 | SSW 15 | SSW 16 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 14 |
 kJ | 144 | 137 | 135 | 137 | 196 | 193 | 188 | 183 | 183 | 180 | 246 | 277 | 125 | 123 | 166 | 233 | 236 | 180 | 180 | 160 | 239 | 236 | 210 | 213 |
Swell 2 Height (m) Direction Period (s) | S 6 | S 6 | S 6 | S 6 | SW 21 | S 6 | S 10 | S 10 | SSW 18 | SSW 17 | SW 19 | SW 19 | SSW 16 | SSW 16 | SSW 16 | SSW 6 | SW 18 | SSW 17 | SSW 17 | SSW 17 | S 10 | SSW 6 | S 6 | SSW 16 |
| kJ | 12 | 12 | 12 | 12 | 117 | 7 | 33 | 18 | 63 | 101 | 96 | 96 | 87 | 51 | 51 | 3 | 80 | 101 | 99 | 101 | 17 | 4 | 3 | 25 |
Swell 3 Height (m) Direction Period (s) | SW 14 | SW 14 | SW 14 | SW 14 | S 6 | SW 21 | SSW 18 | SSW 18 | SSW 6 | SW 19 | S 10 | SSW 20 | SSW 20 | SSW 20 | SSW 19 | SSW 18 | SSE 10 | SW 18 | SW 18 | S 10 | NW 11 | NW 11 | SW 16 | S 6 |
| kJ | 53 | 53 | 52 | 54 | 7 | 72 | 62 | 61 | 7 | 59 | 18 | 75 | 75 | 75 | 72 | 31 | 11 | 80 | 49 | 8 | 5 | 5 | 10 | 3 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | NW 10 | — | — | — | NW 10 | — | — | — | — | — | — | NNW 9 | — | — | — | NW 8 | NNW 8 | — | — | — |
| kJ | — | — | — | — | 25 | — | — | — | 4 | — | — | — | — | — | — | 8 | — | — | — | 3 | 7 | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 0 | 1 | 94 | 138 | 55 | 0 | 0 | 11 | 6 | 0 | 125 | 52 | 125 | 99 | 6 | 0 | 0 | 0 | 125 | 138 | 13 | 13 | 13 | 0 |
Best forecast wave conditions in Big Island | ||||||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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Ocean Swells (m)- Wind Speed (km/h)
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