Weather in December
The ideal ocean temperature of 77.4°F (25.2°C) makes
December in
Waiʻanae,
Hawaii, the best time for swimming and other water activities.
Ocean temperature
In Waiʻanae, the average seawater temperature in December is 77.4°F (25.2°C).
Note: With water temperature from 77°F (25°C) to 84.2°F (29°C), all water activities are comfortable and delightful, devoid of discomfort even for lengthened periods.
Daylight
December has the shortest days of the year, with an average of 10h and 54min of daylight.
On the first day of December, sunrise is at 6:54 am and sunset at 5:49 pm. On the last day of the month, sunrise is at 7:10 am and sunset at 6:01 pm HST.