Saint Petersburg Weather in September

The climate in Saint Petersburg during September can be summarized as hot, humid and wet.

September is in the fall / autumn in Saint Petersburg and is typically the 3rd warmest month of the year. Daytime maximum temperatures average around a steamy 32°C (89°F), whilst at night 23°C (73°F) is normal.

On average September is the 3rd wettest month of the year in Saint Petersburg with around 165mm 6.5 inches of rain making it a wet time to visit. This rainfall is typically spread over 12 days, although this may vary considerably.

On the flip side this corresponds to an average of 8.1 hours of sunshine per day.

The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Saint Petersburg in September 2024.