January in Vienna is the snowiest and the coldest month of the year. In January, the weather in Vienna is typically cold. Average daily high temperature in January is about 2 degrees above zero. On average, Vienna has 12 partly cloudy, 8 cloudy, 5 sunny, 4 rainy, and 2 snowy days in January. The rains are usually light. January as well as February, March, November, and December is considered the most uncomfortable time to visit Vienna.