September in Tikhvin averages a daily high of 15.8°C with nights around 6.3°C. Expect roughly 13.6 wet days totalling 64.3mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Tikhvin is May–August.
Based on TIHVIN, RS (7.9km), 1995–2024. 30 years of September data.