March in Karlstad is the sunniest month of the year. In March, the weather in Karlstad is typically cold. Average daily high temperature in March is about 4 degrees above zero. On average, Karlstad has 10 sunny, 10 partly cloudy, 7 cloudy, 3 rainy, and 1 snowy day in March. The rains are usually light. March as well as January, February, April, and May is considered the most uncomfortable time to visit Karlstad.