September in Singer Island is the rainiest and the cloudiest month of the year. In September, the weather in Singer Island is typically hot. Average daily high temperature in September is about 29 degrees above zero. On average, Singer Island has 20 rainy, 9 sunny, and 1 cloudy day in September. The rains are usually heavy. September as well as June, July, August, and October is considered the most uncomfortable time to visit Singer Island.