August in Quimper averages a daily high of 21.1°C with nights around 13.3°C. Expect roughly 14.8 wet days totalling 75.9mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Quimper is June–September.
Based on BREST GUIPAVAS, FR (55km), 1995–2024. 30 years of August data.