September in Voronezh averages a daily high of 19.9°C with nights around 9.4°C. Expect roughly 8.5 wet days totalling 50.2mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Voronezh is May–September.
Based on VORONEZ, RS (3.9km), 1995–2024. 30 years of September data.