September Weather in Barnaul, Russian Federation

Last updated: August 27, 2025

In September, the average temperature in Barnaul, Russian Federation hovers around 12°C (53°F). However, expect a range from a chilly -2°C (28°F) to a warm 32°C (89°F). During this month, 55 mm (2.2 in) of precipitation falls over 12 days, contributing to an average humidity of 67%. Prepare for a blend of cool breezes and occasional showers!

September Temperature in Barnaul

In September in Barnaul, the average temperature is 12°C (53°F). Maximum temperatures can reach 32°C (89°F), while minimum temperatures can drop as low as -2°C (28°F). This range makes it essential for travelers to pack for varied weather conditions.

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

The chart illustrates September temperature patterns in Barnaul, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Barnaul, September typically has an average temperature of 12°C (53°F), with highs reaching up to 32°C (89°F) and lows dropping to around -2°C (28°F).

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

September Precipitation in Barnaul

In Barnaul in September, the total precipitation amount is 55 mm (2.2 in) over a span of 12 days.

September Precipitation Trends in Barnaul

The chart displays monthly precipitation patterns in Barnaul, 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 Barnaul, September typically receives around 55 mm (2.2 inches) of precipitation spread over approximately 12 days.

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

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

September Humidity in Barnaul

In Barnaul in September humidity is 67%. With an average temperature of 12°C (53°F), this humidity feels like a cool, brisk embrace that can be refreshing but also slightly damp, making outdoor activities enjoyable yet requiring a light jacket to stay comfortable while exploring.

September Average Humidity in Barnaul

This chart illustrates the average monthly humidity levels in Barnaul, 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 Barnaul is approximately 67%, 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 Barnaul

In Barnaul in September, the maximum UV index reaches 5, which corresponds to a moderate Exposure Category. Under these conditions, the estimated time to burn is approximately 30 minutes. For more details, you can check the Hourly UV Index in Barnaul.

Maximum UV Index Levels in Barnaul for September

The chart shows the monthly maximum UV Index (UVI) for Barnaul 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 Barnaul typically reaches 5, which falls under the moderate exposure category.

Data source: Barnaul 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 Barnaul Compares to Other Months

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

This table compares monthly weather conditions in Barnaul, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-15°C (5°F)	30 mm (1.2 inches)	92%	low
February Weather	-13°C (9°F)	24 mm (0.9 inches)	94%	low
March Weather	-5°C (23°F)	31 mm (1.2 inches)	93%	moderate
April Weather	5°C (42°F)	22 mm (0.9 inches)	84%	moderate
May Weather	14°C (58°F)	53 mm (2.1 inches)	65%	very high
June Weather	18°C (65°F)	64 mm (2.5 inches)	47%	very high
July Weather	20°C (68°F)	73 mm (2.9 inches)	49%	high
August Weather	18°C (66°F)	44 mm (1.7 inches)	53%	high
September Weather	12°C (53°F)	55 mm (2.2 inches)	67%	moderate
October Weather	4°C (40°F)	51 mm (2.0 inches)	81%	moderate
November Weather	-6°C (22°F)	55 mm (2.2 inches)	87%	low
December Weather	-12°C (10°F)	46 mm (1.8 inches)	92%	low