December in Rizhao is the windiest and the sunniest month of the year. In December, the weather in Rizhao is typically cold. Average daily high temperature in December is about 5 degrees above zero. On average, Rizhao has 26 sunny, 4 partly cloudy, and 1 rainy day in December. The rains are usually moderate. December as well as January, February, July, and August is considered the most uncomfortable time to visit Rizhao.