St.-Petersburg (Saint Petersburg)
September
Weather in St.-Petersburg for September 2027
Your guide to St.-Petersburg weather in September - trends and predictions
In general, the average temperature in St.-Petersburg at the beginning of September is 20 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 15.1 °C by the end of September.
St.-Petersburg experiences moderate rainfall in September, with an average of 9 rainy days and a total precipitation of 45.6 mm.
Is September a good time to visit St.-Petersburg? check out the best time to travel to St.-Petersburg page.
Temperatures
Rain 🌧️
More
21
Dry days
9
Rainy days
0
Snow days
18°/10°
Temperatures
16 km/h
Avg max wind
75 %
Avg humidity
St.-Petersburg Weather September
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Temperatures trend during September in St.-Petersburg
See the weather trend as well as the moving average line
September weather in St.-Petersburg day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. |  Patchy rain possible | 20° /13° | 1.8 mm | 3.8 | |
| 2 Sept. |  Cloudy | 21° /12° | 0.2 mm | 3.7 | |
| 3 Sept. |  Light rain | 21° /12° | 4.2 mm | 3.7 | |
| 4 Sept. | Light rain | 20° /12° | 6.8 mm | 3.6 | |
| 5 Sept. | Patchy rain possible | 21° /12° | 0.4 mm | 3.5 | |
| 6 Sept. | Cloudy | 19° /10° | 0.2 mm | 3.4 | |
| 7 Sept. |  Sunny | 19° /10° | 0 mm | 3.3 | |
| 8 Sept. | Sunny | 21° /10° | 0 mm | 3.3 | |
| 9 Sept. |  Partly cloudy | 22° /11° | 0.6 mm | 3.2 | |
| 10 Sept. | Light rain | 22° /12° | 3 mm | 3.1 | |
| 11 Sept. | Patchy rain possible | 21° /12° | 0.8 mm | 3 | |
| 12 Sept. | Sunny | 21° /12° | 0.2 mm | 3 | |
| 13 Sept. | Light rain | 21° /13° | 3.8 mm | 2.9 | |
| 14 Sept. | Patchy rain possible | 20° /11° | 2.1 mm | 2.8 | |
| 15 Sept. |  Overcast | 18° /9° | 0.1 mm | 2.7 | |
| 16 Sept. | Partly cloudy | 20° /10° | 0.8 mm | 2.7 | |
| 17 Sept. | Light rain shower | 19° /12° | 2 mm | 2.6 | |
| 18 Sept. |  Mist | 17° /9° | 0.8 mm | 2.5 | |
| 19 Sept. | Light rain | 18° /9° | 2.8 mm | 2.5 | |
| 20 Sept. | Light rain | 16° /11° | 3.5 mm | 2.4 | |
| 21 Sept. | Patchy rain possible | 18° /10° | 1.2 mm | 2.3 | |
| 22 Sept. | Cloudy | 17° /8° | 0.4 mm | 2.2 | |
| 23 Sept. | Patchy rain possible | 16° /8° | 1.3 mm | 2.2 | |
| 24 Sept. | Light rain | 16° /8° | 2.8 mm | 2.1 | |
| 25 Sept. | Overcast | 16° /9° | 0.1 mm | 2 | |
| 26 Sept. | Overcast | 16° /10° | 0.8 mm | 2 | |
| 27 Sept. | Light rain | 15° /10° | 3 mm | 1.9 | |
| 28 Sept. | Mist | 15° /10° | 0.4 mm | 1.9 | |
| 29 Sept. | Sunny | 14° /7° | 0.4 mm | 1.8 | |
| 30 Sept. | Patchy rain possible | 13° /6° | 1.3 mm | 1.7 | |
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Important Notice
Our weather forecast for St.-Petersburg in September is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the St.-Petersburg forecast closer to your planned date for the most up-to-date weather information.
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St.-Petersburg in September - FAQ
What are the expected maximum and minimum temperatures in St.-Petersburg during September?
Enjoy moderate daytime temperatures of up to 18° and cooler nights around 10°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in St.-Petersburg during September?
In September, St.-Petersburg can expect light to moderate rainfall, totaling 45.6 mm across approximately 9 days. Occasional showers are possible, and planning ahead for them could be helpful.
What are the typical wind conditions in St.-Petersburg during September?
The average wind speed in St.-Petersburg during September is 16 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in St.-Petersburg
Explore the daily rainfall trends and prepare for St.-Petersburgs September weather 💧
Typically, St.-Petersburg has 9 rainy days in September with a total of 45.6 mm of rainfall.
UV exposure in St.-Petersburg during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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