July in Vyazemka is the warmest month of the year. In July, the weather in Vyazemka is typically warm. Average daily high temperature in July is about 25 degrees above zero. On average, Vyazemka has 15 sunny, 9 partly cloudy, and 7 rainy days in July. The rains are usually moderate. July as well as August is considered the most comfortable time to visit Vyazemka.