In May, the weather in Nizhnevartovsk is typically cold. Average daily high temperature in May is about 9 degrees above zero. On average, Nizhnevartovsk has 15 rainy, 13 cloudy, and 3 sunny days in May. The rains are usually moderate. May as well as January, February, April, and September is considered the most uncomfortable time to visit Nizhnevartovsk.