May in Ziar nad Hronom is the rainiest month of the year. In May, the weather in Ziar nad Hronom is typically warm. Average daily high temperature in May is about 17 degrees above zero. On average, Ziar nad Hronom has 15 rainy, 7 sunny, 6 partly cloudy, and 3 cloudy days in May. The rains are usually heavy. May as well as January, February, March, and April is considered the most uncomfortable time to visit Ziar nad Hronom.