In May, the weather in San Vito Lo Capo is typically warm. Average daily high temperature in May is about 20 degrees above zero. On average, San Vito Lo Capo has 28 sunny, 2 partly cloudy, and 1 rainy day in May. The rains are usually light. May as well as June, September, and October is considered the most comfortable time to visit San Vito Lo Capo.