January in Puerto Aisen is the sunniest and the warmest month of the year. In January, the weather in Puerto Aisen is typically warm. Average daily high temperature in January is about 11 degrees above zero. On average, Puerto Aisen has 25 rainy, 5 sunny, and 1 partly cloudy day in January. The rains are usually heavy. January as well as February, March, April, and May is considered the most uncomfortable time to visit Puerto Aisen.