September in Ajon is the rainiest and the windiest month of the year. In September, the weather in Ajon is typically cold. Average daily high temperature in September is about 3 degrees above zero. On average, Ajon has 13 cloudy, 11 rainy, 4 sunny, and 2 partly cloudy days in September. The rains are usually light. September as well as January, February, March, and April is considered the most uncomfortable time to visit Ajon.