September in Bacău averages a daily high of 23°C with nights around 10.3°C. Expect roughly 7.9 wet days totalling 56.4mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Bacău is May–June.
Based on BACAU, RO (3.8km), 1995–2024. 30 years of September data.