July in Rozmberk nad Vltavou is the warmest month of the year. In July, the weather in Rozmberk nad Vltavou is typically warm. Average daily high temperature in July is about 22 degrees above zero. On average, Rozmberk nad Vltavou has 17 rainy, 7 sunny, 6 partly cloudy, and 1 cloudy day in July. The rains are usually heavy. July as well as January, February, March, and April is considered the most uncomfortable time to visit Rozmberk nad Vltavou.