January in Tianmen is the sunniest and the coldest month of the year. In January, the weather in Tianmen is typically cold. Average daily high temperature in January is about 8 degrees above zero. On average, Tianmen has 12 sunny, 7 cloudy, 7 partly cloudy, and 5 rainy days in January. The rains are usually moderate. January as well as February, June, July, and August is considered the most uncomfortable time to visit Tianmen.