September in Sector 4 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 Sector 4 is April–May.
Based on BUCURESTI BANEASA, RO (16km), 1995–2024. 30 years of September data.