In September, the weather in San Vito Lo Capo is typically warm. Average daily high temperature in September is about 25 degrees above zero. On average, San Vito Lo Capo has 26 sunny, 2 rainy, and 2 partly cloudy days in September. The rains are usually light. September as well as May, June, and October is considered the most comfortable time to visit San Vito Lo Capo.