August in Tatarskiy Klyuch is the rainiest month of the year. In August, the weather in Tatarskiy Klyuch is typically warm. Average daily high temperature in August is about 19 degrees above zero. On average, Tatarskiy Klyuch has 18 rainy, 9 sunny, 3 partly cloudy, and 1 cloudy day in August. The rains are usually heavy.