January in Guiyang is the coldest month of the year. In January, the weather in Guiyang is typically cold. Average daily high temperature in January is about 5 degrees above zero. On average, Guiyang has 17 rainy, 11 cloudy, and 3 sunny days in January. The rains are usually light. January as well as February, March, April, and May is considered the most uncomfortable time to visit Guiyang.