September in Calp is the rainiest month of the year. In September, the weather in Calp is typically warm. Average daily high temperature in September is about 26 degrees above zero. On average, Calp has 15 sunny, 9 rainy, and 6 partly cloudy days in September. The rains are usually heavy. September as well as January, February, March, and November is considered the most uncomfortable time to visit Calp.