December in Fukuoka is the windiest month of the year. In December, the weather in Fukuoka is typically warm. Average daily high temperature in December is about 10 degrees above zero. On average, Fukuoka has 18 rainy, 8 sunny, 4 partly cloudy, and 1 cloudy day in December. The rains are usually heavy. December as well as January, February, March, and June is considered the most uncomfortable time to visit Fukuoka.