October in Saint Petersburg averages a daily high of 8.9°C with nights around 4.3°C. Expect roughly 15.7 wet days totalling 64.6mm. A hard month to visit for comfort alone.
Across the year, the best time to visit Saint Petersburg is May–August.
Based on ST. PETERSBURG, RS (3.2km), 1995–2024. 25 years of October data.