In December, the weather in Matsumoto is typically cold. Average daily high temperature in December is about 3 degrees above zero. On average, Matsumoto has 14 rainy, 7 sunny, 4 snowy, 3 cloudy, and 3 partly cloudy days in December. The rains are usually moderate. December as well as February, March, June, and July is considered the most uncomfortable time to visit Matsumoto.