August in Slavonski Brod is the sunniest and the warmest month of the year. In August, the weather in Slavonski Brod is typically hot. Average daily high temperature in August is about 28 degrees above zero. On average, Slavonski Brod has 28 sunny, 2 rainy, and 1 partly cloudy day in August. The rains are usually light. August as well as July is considered the most comfortable time to visit Slavonski Brod.