July in Hitachi is the rainiest month of the year. In July, the weather in Hitachi is typically warm. Average daily high temperature in July is about 26 degrees above zero. On average, Hitachi has 16 rainy, 7 cloudy, 5 sunny, and 3 partly cloudy days in July. The rains are usually heavy. July as well as January, February, March, and April is considered the most uncomfortable time to visit Hitachi.