May in Kirensk is the rainiest month of the year. In May, the weather in Kirensk is typically warm. Average daily high temperature in May is about 11 degrees above zero. On average, Kirensk has 20 rainy, 8 cloudy, 2 sunny, and 1 partly cloudy day in May. The rains are usually moderate. May as well as January, February, April, and September is considered the most uncomfortable time to visit Kirensk.