August in Himeji is the hottest month of the year. In August, the weather in Himeji is typically hot. Average daily high temperature in August is about 29 degrees above zero. On average, Himeji has 20 rainy, 8 sunny, 2 partly cloudy, and 1 cloudy day in August. The rains are usually heavy. August as well as January, February, March, and July is considered the most uncomfortable time to visit Himeji.