December weather forecast in Wailuku

In December, the weather in Wailuku is typically warm. Average daily high temperature in December is about 23 degrees above zero. On average, Wailuku has 15 sunny, 14 partly cloudy, and 2 rainy days in December. The rains are usually light. December as well as January, May, June, and July is considered the most comfortable time to visit Wailuku.