September in Los Roques archipelago is the hottest month of the year. In September, the weather in Los Roques archipelago is typically hot. Average daily high temperature in September is about 28 degrees above zero. On average, Los Roques archipelago has 15 rainy, 7 partly cloudy, 5 sunny, and 3 cloudy days in September. The rains are usually moderate. September as well as July, August, October, and November is considered the most uncomfortable time to visit Los Roques archipelago.