August in Wysokie Mazowieckie is the sunniest month of the year. In August, the weather in Wysokie Mazowieckie is typically warm. Average daily high temperature in August is about 23 degrees above zero. On average, Wysokie Mazowieckie has 11 rainy, 9 sunny, 7 partly cloudy, and 4 cloudy days in August. The rains are usually heavy.