In September, the weather in Mahabalipuram is typically hot. Average daily high temperature in September is about 33 degrees above zero. On average, Mahabalipuram has 17 rainy, 9 cloudy, 2 sunny, and 2 partly cloudy days in September. The rains are usually heavy. September as well as June, July, August, and October is considered the most uncomfortable time to visit Mahabalipuram.