December weather forecast in Salta

December in Salta is the rainiest month of the year. In December, the weather in Salta is typically warm. Average daily high temperature in December is about 21 degrees above zero. On average, Salta has 21 rainy, 6 sunny, 2 cloudy, and 2 partly cloudy days in December. The rains are usually moderate. December as well as January, February, and March is considered the most uncomfortable time to visit Salta.