March in Gronau averages a daily high of 10.2°C with nights around 1.3°C. Expect roughly 13.4 wet days totalling 56.5mm. Demanding conditions — pack for it and plan indoor options.
Across the year, the best time to visit Gronau is May–September.
Based on TWENTHE, NL (11.3km), 1995–2024. 29 years of March data.