August in Kazan is the sunniest month of the year. In August, the weather in Kazan is typically hot. Average daily high temperature in August is about 27 degrees above zero. On average, Kazan has 17 sunny, 7 partly cloudy, 5 rainy, and 2 cloudy days in August. The rains are usually light. August as well as June and September is considered the most comfortable time to visit Kazan.