January in Mamoudzou is the rainiest and the hottest month of the year. In January, the weather in Mamoudzou is typically hot. Average daily high temperature in January is about 28 degrees above zero. On average, Mamoudzou has 25 rainy, 5 sunny, and 1 cloudy day in January. The rains are usually heavy. January as well as February, March, and December is considered the most uncomfortable time to visit Mamoudzou.