July in Côn Đảo is the rainiest and the cloudiest month of the year. In July, the weather in Côn Đảo is typically hot. Average daily high temperature in July is about 29 degrees above zero. On average, Côn Đảo has 28 rainy, 2 sunny, and 1 cloudy day in July. The rains are usually heavy. July as well as May, June, August, and September is considered the most uncomfortable time to visit Côn Đảo.