July in Matsumoto is the rainiest month of the year. In July, the weather in Matsumoto is typically warm. Average daily high temperature in July is about 24 degrees above zero. On average, Matsumoto has 25 rainy, 3 sunny, and 3 cloudy days in July. The rains are usually heavy. July as well as February, March, June, and August is considered the most uncomfortable time to visit Matsumoto.