August in Vladivostok is the rainiest and the warmest month of the year. In August, the weather in Vladivostok is typically warm. Average daily high temperature in August is about 24 degrees above zero. On average, Vladivostok has 14 rainy, 9 cloudy, 6 partly cloudy, and 2 sunny days in August. The rains are usually heavy. August as well as January, March, April, and May is considered the most uncomfortable time to visit Vladivostok.