May in Iaşi averages a daily high of 23.5°C with nights around 10.6°C. Expect roughly 10 wet days totalling 53.2mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Iaşi is May–June.
Based on IASI, RO (2.5km), 1995–2024. 30 years of May data.