December in Weihai is the windiest month of the year. In December, the weather in Weihai is typically cold. Average daily high temperature in December is about 3 degrees above zero. On average, Weihai has 13 sunny, 13 partly cloudy, 3 rainy, and 2 cloudy days in December. The rains are usually light. December as well as January and February is considered the most uncomfortable time to visit Weihai.