January in Wuyishan is the coldest month of the year. In January, the weather in Wuyishan is typically cold. Average daily high temperature in January is about 9 degrees above zero. On average, Wuyishan has 13 rainy, 8 sunny, 6 partly cloudy, and 4 cloudy days in January. The rains are usually heavy. January as well as February, March, April, and May is considered the most uncomfortable time to visit Wuyishan.