May in Sarajevo is the rainiest month of the year. In May, the weather in Sarajevo is typically warm. Average daily high temperature in May is about 15 degrees above zero. On average, Sarajevo has 16 rainy, 9 sunny, and 6 partly cloudy days in May. The rains are usually moderate. May as well as January, February, March, and April is considered the most uncomfortable time to visit Sarajevo.