August in Benin is the coldest month of the year. In August, the weather in Benin is typically hot. Average daily high temperature in August is about 28 degrees above zero. On average, Benin has 29 rainy, 1 cloudy, and 1 partly cloudy day in August. The rains are usually heavy. August as well as February, March, April, and May is considered the most uncomfortable time to visit Benin.