January in Antananarivo is the rainiest month of the year. In January, the weather in Antananarivo is typically warm. Average daily high temperature in January is about 22 degrees above zero. On average, Antananarivo has 28 rainy, 2 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 Antananarivo.