September in Fort-de-France is the rainiest, the cloudiest, and the hottest month of the year. In September, the weather in Fort-de-France is typically hot. Average daily high temperature in September is about 28 degrees above zero. On average, Fort-de-France has 20 rainy, 5 sunny, 4 partly cloudy, and 1 cloudy day in September. The rains are usually heavy. September as well as July, August, October, and November is considered the most uncomfortable time to visit Fort-de-France.