October in Gatchina averages a daily high of 8.3°C with nights around 1.8°C. Expect roughly 16.3 wet days totalling 65.7mm. A hard month to visit for comfort alone.
Across the year, the best time to visit Gatchina is May–August.
Based on BELOGORKA, RS (19.7km), 1995–2024. 29 years of October data.