May in Velikie Luki is the rainiest month of the year. In May, the weather in Velikie Luki is typically warm. Average daily high temperature in May is about 17 degrees above zero. On average, Velikie Luki has 20 rainy, 8 sunny, and 3 partly cloudy days in May. The rains are usually moderate. May as well as March, April, and November is considered the most uncomfortable time to visit Velikie Luki.