In May, the weather in Zelenogorsk is typically warm. Average daily high temperature in May is about 12 degrees above zero. On average, Zelenogorsk has 19 rainy, 5 cloudy, 4 sunny, and 3 partly cloudy days in May. The rains are usually moderate. May as well as January, February, April, and August is considered the most uncomfortable time to visit Zelenogorsk.