July in Bolgatanga is the cloudiest month of the year. In July, the weather in Bolgatanga is typically hot. Average daily high temperature in July is about 31 degrees above zero. On average, Bolgatanga has 19 rainy, 9 partly cloudy, and 3 sunny days in July. The rains are usually heavy. July as well as August and September is considered the most uncomfortable time to visit Bolgatanga.