September in Chiclayo is the windiest month of the year. In September, the weather in Chiclayo is typically warm. Average daily high temperature in September is about 21 degrees above zero. On average, Chiclayo has 21 partly cloudy, 5 cloudy, and 4 sunny days in September. September as well as May, June, July, and August is considered the most comfortable time to visit Chiclayo.