May in Bujumbura is the coldest month of the year. In May, the weather in Bujumbura is typically warm. Average daily high temperature in May is about 23 degrees above zero. On average, Bujumbura has 17 partly cloudy, 12 sunny, 1 rainy, and 1 cloudy day in May. The rains are usually light. May as well as June, July, August, and September is considered the most comfortable time to visit Bujumbura.