Average monthly water temperature in Haiku, Hawaii
On this page you find the mean water temperature over the year in Haiku (Maui), Hawaii. Discover the unique water temperature patterns, from its warmest to its coolest months.
In Haiku, water temperatures are consistently warm throughout the year. The warmest month is September, 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 Haiku a year-round destination for swimming and other water-based activities.
Haiku Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Haiku - and find the best time to visit.
Haiku 3-Day Forecast
Temperature Rainfall Sunshine Humidity Wind Speed Water Temp
See the full Haiku climate overview or explore weather in Hawaii.
Popular this month
Where to go in September - average daytime high across popular destinations.
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