July in Plettenberg Bay is the coldest month of the year. In July, the weather in Plettenberg Bay is typically warm. Average daily high temperature in July is about 17 degrees above zero. On average, Plettenberg Bay has 15 sunny, 9 rainy, and 7 partly cloudy days in July. The rains are usually moderate. July as well as June, August, September, and October is considered the most uncomfortable time to visit Plettenberg Bay.