March in Lille averages a daily high of 11.4°C with nights around 3.8°C. Expect roughly 12.5 wet days totalling 53.3mm. Demanding conditions — pack for it and plan indoor options.
Across the year, the best time to visit Lille is May–September.
Based on LILLE LESQUIN, FR (7.7km), 1995–2024. 30 years of March data.