January in Bratislava is the snowiest and the coldest month of the year. In January, the weather in Bratislava is typically cold. Average daily high temperature in January is about 1 degree above zero. On average, Bratislava has 11 cloudy, 10 rainy, 5 sunny, 3 partly cloudy, and 2 snowy days in January. The rains are usually moderate. January as well as February, November, and December is considered the most uncomfortable time to visit Bratislava.