August in Koutiala is the rainiest, the cloudiest, and the coldest month of the year. In August, the weather in Koutiala is typically hot. Average daily high temperature in August is about 29 degrees above zero. On average, Koutiala has 24 rainy, 4 partly cloudy, 2 cloudy, and 1 sunny day in August. The rains are usually heavy. August as well as May, June, July, and September is considered the most uncomfortable time to visit Koutiala.