September Weather in Sestroretsk, Russian Federation

Last updated: August 27, 2025

In Sestroretsk, Russian Federation, the average temperature in September hovers around 13°C (55°F). Daily extremes can range from a cool 4°C (39°F) to a warm 23°C (73°F). The region experiences 92 mm (3.6 in) of precipitation across approximately 14 days, contributing to an average humidity level of 90%. Prepare for a mix of brisk and mild weather, perfect for cozy indoor activities or braving the elements!

September Temperature in Sestroretsk

In September in Sestroretsk, the average temperature is 13°C (55°F). Maximum can reach 23°C (73°F) and minimum can be as low as 4°C (39°F). It's a great time to explore Sestroretsk while enjoying mild weather and comfortable conditions.

September Weather in Sestroretsk: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Sestroretsk, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Sestroretsk, September typically has an average temperature of 13°C (55°F), with highs reaching up to 23°C (73°F) and lows dropping to around 4°C (39°F).

Data source: Temperature data for Sestroretsk generated using information from the Copernicus Climate Change Service.

September Precipitation in Sestroretsk

In Sestroretsk in September, the precipitation amount is 92 mm (3.6 in) over the course of 14 days.

September Precipitation Trends in Sestroretsk

The chart displays monthly precipitation patterns in Sestroretsk, with values for each month alongside September’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how September’s conditions compare to those of other months. In Sestroretsk, September typically receives around 92 mm (3.6 inches) of precipitation spread over approximately 14 days.

Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

September Humidity in Sestroretsk

In Sestroretsk in September humidity is 90%. With an average temperature of 13°C (55°F), this humidity feels like a heavy blanket wrapping around you, making every step feel more laborious and causing a sticky discomfort that can drain your energy quickly while exploring the sights.

September Average Humidity in Sestroretsk

This chart illustrates the average monthly humidity levels in Sestroretsk, with September’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In September, average humidity in Sestroretsk is approximately 90%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Sestroretsk

In Sestroretsk in September, the maximum UV index reaches 4, which corresponds to a moderate Exposure Category. With a time to burn of 30 minutes, it’s important to take precautions to protect your skin. You can find more details in the Hourly UV Index in Sestroretsk for better planning.

Maximum UV Index Levels in Sestroretsk for September

The chart shows the monthly maximum UV Index (UVI) for Sestroretsk in September, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In September, the maximum UV index in Sestroretsk typically reaches 4, which falls under the moderate exposure category.

Data source: Sestroretsk September UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

Extreme (11+): Avoid the sun, stay in shade.
Very High (8-10): Limit sun exposure.
High (6-7): Use SPF 30+ and protective clothing.
Moderate (3-5): Midday shade recommended.
Low (0-2): No protection needed.

How September Weather in Sestroretsk Compares to Other Months

Weather in Sestroretsk varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Sestroretsk, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Sestroretsk, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-4°C (26°F)	43 mm (1.7 inches)	97%	low
February Weather	-4°C (25°F)	54 mm (2.1 inches)	94%	low
March Weather	-2°C (29°F)	54 mm (2.1 inches)	90%	moderate
April Weather	3°C (38°F)	48 mm (1.9 inches)	86%	moderate
May Weather	10°C (50°F)	49 mm (1.9 inches)	71%	moderate
June Weather	16°C (62°F)	53 mm (2.1 inches)	77%	high
July Weather	18°C (65°F)	87 mm (3.4 inches)	82%	high
August Weather	17°C (63°F)	131 mm (5.1 inches)	86%	moderate
September Weather	13°C (55°F)	92 mm (3.6 inches)	90%	moderate
October Weather	7°C (45°F)	103 mm (4.0 inches)	93%	low
November Weather	3°C (37°F)	68 mm (2.7 inches)	93%	low
December Weather	-2°C (29°F)	75 mm (2.9 inches)	94%	low