September in Tangalle is the coldest month of the year. In September, the weather in Tangalle is typically hot. Average daily high temperature in September is about 29 degrees above zero. On average, Tangalle has 19 rainy, 4 sunny, 4 cloudy, and 3 partly cloudy days in September. The rains are usually light. September as well as March, April, May, and August is considered the most uncomfortable time to visit Tangalle.