August in Belfort averages a daily high of 26.2°C with nights around 14°C. Expect roughly 12 wet days totalling 79.7mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Belfort is May–September.
Based on BASEL MULHOUSE, FR (49.3km), 1995–2024. 30 years of August data.