July in Bahia Blanca is the coldest month of the year. In July, the weather in Bahia Blanca is typically warm. Average daily high temperature in July is about 13 degrees above zero. On average, Bahia Blanca has 15 sunny, 15 partly cloudy, and 1 rainy day in July. The rains are usually light. July as well as June is considered the most uncomfortable time to visit Bahia Blanca.