September weather forecast in Hamamatsu

In September, the weather in Hamamatsu is typically warm. Average daily high temperature in September is about 26 degrees above zero. On average, Hamamatsu has 15 rainy, 10 sunny, and 5 partly cloudy days in September. The rains are usually heavy. September as well as January, February, March, and June is considered the most uncomfortable time to visit Hamamatsu.