December weather forecast in Mililani

In December, the weather in Mililani is typically warm. Average daily high temperature in December is about 24 degrees above zero. On average, Mililani has 18 sunny, 10 partly cloudy, and 3 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 Mililani.