May in Mariupol' is the rainiest month of the year. In May, the weather in Mariupol' is typically warm. Average daily high temperature in May is about 18 degrees above zero. On average, Mariupol' has 15 rainy, 9 sunny, and 7 partly cloudy days in May. The rains are usually moderate. May as well as January, March, April, and October is considered the most uncomfortable time to visit Mariupol'.