October in Vostok is the sunniest month of the year. In October, the weather in Vostok is typically cold. Average daily high temperature in October is about 7 degrees above zero. On average, Vostok has 14 partly cloudy, 11 sunny, and 6 rainy days in October. The rains are usually heavy. October as well as January, February, April, and May is considered the most uncomfortable time to visit Vostok.