January in Brazzaville is the cloudiest month of the year. In January, the weather in Brazzaville is typically hot. Average daily high temperature in January is about 29 degrees above zero. On average, Brazzaville has 22 rainy, 6 cloudy, and 3 partly cloudy days in January. The rains are usually heavy. January as well as February, March, April, and October is considered the most uncomfortable time to visit Brazzaville.