April in Zelenogradsk is the sunniest month of the year. Average daily high temperature in April is about 10 degrees above zero. On average, Zelenogradsk has 11 sunny, 9 rainy, 7 partly cloudy, and 3 cloudy days in April. The rains are usually light. April as well as January, February, March, and October is considered the most uncomfortable time to visit Zelenogradsk.