December in Kaunas is the windiest month of the year. In December, the weather in Kaunas is typically freezing. Average daily high temperature in December is about zero. On average, Kaunas has 12 cloudy, 11 snowy, 6 rainy, and 2 sunny days in December. The snowfalls are usually light. December as well as March, October, and November is considered the most uncomfortable time to visit Kaunas.