June in Kisumu is the coldest month of the year. In June, the weather in Kisumu is typically warm. Average daily high temperature in June is about 24 degrees above zero. On average, Kisumu has 23 rainy, 6 sunny, and 1 partly cloudy day in June. The rains are usually heavy. June as well as April, May, July, and August is considered the most uncomfortable time to visit Kisumu.