May in Tisnov is the rainiest month of the year. In May, the weather in Tisnov is typically warm. Average daily high temperature in May is about 15 degrees above zero. On average, Tisnov has 22 rainy, 8 sunny, and 1 cloudy day in May. The rains are usually moderate. May as well as February, March, April, and November is considered the most uncomfortable time to visit Tisnov.