December in Naha is the windiest month of the year. In December, the weather in Naha is typically warm. Average daily high temperature in December is about 20 degrees above zero. On average, Naha has 17 rainy, 6 sunny, 4 cloudy, and 4 partly cloudy days in December. The rains are usually heavy. December as well as January, February, March, and April is considered the most uncomfortable time to visit Naha.