In April, the weather in Vladivostok is typically cold. Average daily high temperature in April is about 9 degrees above zero. On average, Vladivostok has 11 sunny, 7 rainy, 7 partly cloudy, and 5 cloudy days in April. The rains are usually moderate. April as well as January, March, May, and August is considered the most uncomfortable time to visit Vladivostok.