In February, the weather in Karlskrona is typically cold. Average daily high temperature in February is about 2 degrees above zero. On average, Karlskrona has 20 cloudy, 6 rainy, 2 sunny, and 1 snowy day in February. The rains are usually light. February as well as January, October, November, and December is considered the most uncomfortable time to visit Karlskrona.