September in Minsk averages a daily high of 17.4°C with nights around 8°C. Expect roughly 9.6 wet days totalling 47.7mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Minsk is May–September.
Based on MINSK, BO (4.1km), 1995–2024. 18 years of September data.