May in Hardenberg averages a daily high of 18.3°C with nights around 7.5°C. Expect roughly 12.2 wet days totalling 63.6mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Hardenberg is May–September.
Based on HOOGEVEEN, NL (19.5km), 1995–2024. 30 years of May data.