August in Zgorzelec is the sunniest month of the year. In August, the weather in Zgorzelec is typically warm. Average daily high temperature in August is about 22 degrees above zero. On average, Zgorzelec has 14 sunny, 9 partly cloudy, and 8 rainy days in August. The rains are usually moderate. August as well as September is considered the most comfortable time to visit Zgorzelec.