January in Salta is the cloudiest and the warmest month of the year. In January, the weather in Salta is typically warm. Average daily high temperature in January is about 22 degrees above zero. On average, Salta has 26 rainy, 2 cloudy, 2 partly cloudy, and 1 sunny 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 Salta.