December in Tianjin is the sunniest month of the year. In December, the weather in Tianjin is typically cold. Average daily high temperature in December is about 3 degrees above zero. On average, Tianjin has 25 sunny, 5 partly cloudy, and 1 cloudy day in December. December as well as January, February, July, and August is considered the most uncomfortable time to visit Tianjin.