May in Beroun is the rainiest month of the year. In May, the weather in Beroun is typically warm. Average daily high temperature in May is about 16 degrees above zero. On average, Beroun has 18 rainy, 7 sunny, 5 partly cloudy, and 1 cloudy day in May. The rains are usually heavy. May as well as January, February, March, and April is considered the most uncomfortable time to visit Beroun.