September in Cochabamba is the windiest month of the year. In September, the weather in Cochabamba is typically warm. Average daily high temperature in September is about 15 degrees above zero. On average, Cochabamba has 19 rainy, 8 sunny, and 3 partly cloudy days in September. The rains are usually moderate. September as well as January, February, March, and April is considered the most uncomfortable time to visit Cochabamba.