Average water temperature in Kapaa
The mean water temperature over the year in Kapaa (Hawaii), the United States of America.
- On average, August has the warmest water temperature with 27°C.
- On average, March has the coldest water temperature with 24°C.
Forecast for Kapaa (HI)
partly cloudy and chance of rain
partly cloudy and small chance of slight rain
partly cloudy and small chance of rain