In December, the weather in Desenzano del Garda is typically cold. Average daily high temperature in December is about 7 degrees above zero. On average, Desenzano del Garda has 11 sunny, 9 partly cloudy, 8 rainy, and 3 cloudy days in December. The rains are usually heavy. December as well as January, February, March, and April is considered the most uncomfortable time to visit Desenzano del Garda.