St Petersburg Weather in September

September in St Petersburg brings very high temperatures around 32°C (90°F) during the day, dropping to 25°C (77°F) at night, and as part of the rainy season, heavy rainfall is common.

Rainfall in St Petersburg in September

As part of the rainy season, St Petersburg sees around 18 days of rain in September, with an average of 205 mm (8.1 in). The rainy season here brings regular, substantial showers. It's worth being prepared for rain on most days you're out.

Temperature in St Petersburg in September

Expect highs of 32°C (90°F) in St Petersburg in September, with nights dropping to around 25°C (77°F). If you're spending a lot of time outdoors, it helps to plan around the warmer part of the day. Nights are warm at 25°C (77°F). It's worth making sure your accommodation has decent ventilation or air conditioning.

Sunshine in St Petersburg in September

Expect a lot of sunshine this month, with about 241 hours of sun. Showers typically arrive in the late afternoon or evening, keeping mornings and early afternoons sunny. Even during the wet season, there's plenty of sunshine for sightseeing.

September in St Petersburg can still be great, but if you prefer pleasant temperatures along with dry and sunny conditions, our weather planner can help you explore other options in the world.