September in Antsiranana is the windiest month of the year. In September, the weather in Antsiranana is typically hot. Average daily high temperature in September is about 28 degrees above zero. On average, Antsiranana has 26 sunny, 3 partly cloudy, and 1 rainy day in September. The rains are usually light. September as well as June, July, August, and October is considered the most comfortable time to visit Antsiranana.