September in Bucharest averages a daily high of 25.1°C with nights around 10.9°C. Expect roughly 6.7 wet days totalling 63.1mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Bucharest is April–May.
Based on BUCURESTI BANEASA, RO (9.6km), 1995–2024. 30 years of September data.