September in Puerto Natales is the sunniest month of the year. In September, the weather in Puerto Natales is typically cold. Average daily high temperature in September is about 7 degrees above zero. On average, Puerto Natales has 11 rainy, 7 cloudy, 7 partly cloudy, and 5 sunny 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 Puerto Natales.