September Weather in Saint Petersburg

Last updated: March 2, 2024

The weather in Saint Petersburg, Russian Federation, during September is characterized by an average temperature of 12°C (54°F). Highs can soar to 22°C (71°F), while lows may dip to 4°C (39°F). Typically, the humidity level in Saint Petersburg throughout September hovers around 90%.

4°C (39°F)

Minimum temperature

12°C (54°F)

Average temperature

22°C (71°F)

Maximum temperature

90%

Humidity

Precipitation and Sunshine hours

In September, Saint Petersburg averages 76 mm (3.0 inches) of rainfall, typically over the course of 14 rainy days. The month enjoys an average of 12 hours 47 minutes of daylight, with the sun shining for approximately 9 hours 19 minutes each day. Additionally, there is a 21% probability of sunny days during this period.

76 mm (3.0 inches)

Precipitation

14 rainy days

Rainy days

9 hours 19 minutes

Sunshine hours

21%

Chance of sun

UV Index

In September, the UV Index in Saint Petersburg reaches a maximum of 4, indicating a level of Moderate exposure. The most intense UV radiation typically occurs between 13:00 and 15:00, during which unprotected skin may burn in as little as 30 minutes.

Average solar exposure data for the current time of the year. Actual values may vary and depend on many factors, such as cloud cover, vegetation cover, surface type, etc.
  07:00 08:00 09:00 10:00 11:00 12:00 13:00 14:00 15:00 16:00 17:00 18:00 19:00
UVI 1 1 2 2 3 3 4 3 3 2 1 1 1
Exposure Low Moderate Low
Time to burn 45 min 30 min 45 min

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