June in Groningen averages a daily high of 20.8°C with nights around 10°C. Expect roughly 12.2 wet days totalling 64mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Groningen is May–September.
Based on EELDE, NL (10.7km), 1995–2024. 30 years of June data.