May in Cluj-Napoca averages a daily high of 21.6°C with nights around 9.2°C. Expect roughly 12.5 wet days totalling 71.5mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Cluj-Napoca is May–September.
Based on CLUJ NAPOCA, RO (3.1km), 1995–2024. 30 years of May data.