January in Fukuoka is the coldest month of the year. In January, the weather in Fukuoka is typically cold. Average daily high temperature in January is about 7 degrees above zero. On average, Fukuoka has 11 rainy, 8 partly cloudy, 7 sunny, and 5 cloudy days in January. The rains are usually heavy. January as well as February, March, June, and July is considered the most uncomfortable time to visit Fukuoka.