September in Kyiv averages a daily high of 19.9°C with nights around 10.6°C. Expect roughly 9.8 wet days totalling 64.1mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Kyiv is May–September.
Based on KIEV, UP (6.1km), 1995–2024. 19 years of September data.