July in Roubaix averages a daily high of 23.8°C with nights around 14.2°C. Expect roughly 11.6 wet days totalling 64.1mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Roubaix is May–September.
Based on LILLE LESQUIN, FR (14.8km), 1995–2024. 30 years of July data.