Average monthly water temperature in Kapaa, the United States of America
On this page you find the mean water temperature over the year in Kapaa (Hawaii), the United States of America. Get insights into the water temperature fluctuations and discover what they mean for visitors.
In Kapaa, water temperatures are consistently warm throughout the year. The warmest month is August, with an average water temperature of 27°C (81°F).
The coolest month is January, with an average temperature of 24°C (75°F). This makes Kapaa a year-round destination for swimming and other water-based activities.
Kapaa Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Kapaa - and find the best time to visit.
Kapaa 3-Day Forecast
Temperature Rainfall Sunshine Humidity Wind Speed Water Temp
See the full Kapaa climate overview or explore weather in the United States of America.
Popular this month
Where to go in August - average daytime high across popular destinations.
Kissimmee
33°C (91°F) Orlando33°C (91°F) Miami Beach32°C (90°F) Destin32°C (90°F) New York City
29°C (84°F) Big Bear Lake
27°C (81°F) Los Angeles
24°C (75°F) San Francisco22°C (72°F) 
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