Saint Petersburg Weather in September
Saint Petersburg in September sees moderate daytime temperatures of 16°C (61°F) and nighttime lows of 8°C (46°F). Rainfall is fairly high this month at around 63 mm (2.5 in), so pack a rain jacket to stay dry.
Rainfall in Saint Petersburg in September
Historically, the month has about 17 days of rain, averaging 63 mm (2.5 in) in total. This is a month with many wet days but modest rainfall totals, so showers are generally light and easy to manage.
Temperature in Saint Petersburg in September
Daytime highs in Saint Petersburg in September reach 16°C (61°F), with nights around 8°C (46°F). Temperatures can feel cooler in the morning and evening, so layering is often the best approach. With overnight lows of 8°C (46°F), nights are cold. The cold air does make for deep, comfortable sleep if you have enough blankets.
Sunshine in Saint Petersburg in September
The month experiences a moderate amount of sunlight, with 129 hours of sunshine. This provides a nice balance between sunshine and clouds.If you prefer enjoying temperate temperatures and rain-free days, June, July and August typically offer the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.
Saint Petersburg Temperature in September
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Saint Petersburg Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Saint Petersburg - and find the best time to visit.
Daily Historical Temperatures
49-year average (1976-2025)
Based on our historical records, temperatures in Saint Petersburg typically drop from around 18°C (64°F) at the start of September to approximately 12°C (54°F) by the end. Nights are cold, with lows typically ranging from 5°C (41°F) to 10°C (50°F).
Average temperatures in September
Daily Historical Precipitation
49-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in September
Historical weather records for Saint Petersburg in September
Browse day-by-day weather records for Saint Petersburg spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Saint Petersburg historical weather extremes in September
Our historical data for Saint Petersburg spans 1998 to 2025, revealing these weather extremes.
- The hottest September day on record in Saint Petersburg reached 27°C (81°F) (September 3, 2024).
- The lowest daytime temperature in September was 6°C (43°F), recorded on September 30, 2013.
- Nighttime temperatures dropped to -3°C (27°F) on September 26, 2001, marking the coldest September night on record.
Best Places in Russia in September
Find out more about the weather in Russia and which places have the best travel conditions in this month. See all of Russia in September →
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
What to Wear in Saint Petersburg in September
Comfortable temperatures call for an easy wardrobe in September. Pack summer basics like t-shirts and shorts, but include a light jacket for cooler moments. A pair of comfortable walking shoes is essential. Wet weather is likely, so pack waterproof gear for multiple rainy days. It won't hurt to bring your sunglasses along, as you'll see some sunny periods.
What To Do in Saint Petersburg in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Swimming5/10 -
Cycling6/10 -
Walking6/10 -
Camping4/10 -
Outdoor sports10/10
Saint Petersburg 3-Day Forecast
Temperature Rainfall Sunshine Humidity
See the full Saint Petersburg climate overview or explore weather in Russia.
Popular in September
Where to go in September - average daytime high across popular destinations.
Gelendzhik
24°C (75°F) Anapa
24°C (75°F) Sochi24°C (75°F) Adler24°C (75°F) Moscow
17°C (63°F) Kazan17°C (63°F) Saint Petersburg
16°C (61°F) Yekaterinburg15°C (59°F) 
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