August in Kayes is the rainiest, the cloudiest, and the coldest month of the year. In August, the weather in Kayes is typically hot. Average daily high temperature in August is about 32 degrees above zero. On average, Kayes has 16 rainy, 9 partly cloudy, 5 cloudy, and 1 sunny day in August. The rains are usually heavy. August as well as April, May, June, and July is considered the most uncomfortable time to visit Kayes.