In December, the weather in Hévíz is typically cold. Average daily high temperature in December is about 3 degrees above zero. On average, Hévíz has 11 partly cloudy, 8 cloudy, 6 rainy, 5 sunny, and 1 snowy day in December. The rains are usually moderate. December as well as January, February, March, and November is considered the most uncomfortable time to visit Hévíz.