December in Farafangana is the warmest month of the year. In December, the weather in Farafangana is typically hot. Average daily high temperature in December is about 28 degrees above zero. On average, Farafangana has 16 rainy, 10 sunny, and 5 partly cloudy days in December. The rains are usually heavy. December as well as January, February, and March is considered the most uncomfortable time to visit Farafangana.