In July, the weather in Oloron-Sainte-Marie is typically warm. Average daily high temperature in July is about 23 degrees above zero. On average, Oloron-Sainte-Marie has 22 sunny, 5 partly cloudy, and 4 rainy days in July. The rains are usually light. July as well as August and September is considered the most comfortable time to visit Oloron-Sainte-Marie.