In August, the weather in Côn Đảo is typically hot. Average daily high temperature in August is about 29 degrees above zero. On average, Côn Đảo has 25 rainy, 3 sunny, and 3 cloudy days in August. The rains are usually heavy. August as well as May, June, July, and September is considered the most uncomfortable time to visit Côn Đảo.