December in Puerto Natales is the rainiest and the cloudiest month of the year. In December, the weather in Puerto Natales is typically warm. Average daily high temperature in December is about 11 degrees above zero. On average, Puerto Natales has 20 rainy, 10 cloudy, and 1 sunny day in December. The rains are usually moderate. December as well as January, February, March, and April is considered the most uncomfortable time to visit Puerto Natales.