September Weather in Buy, Russian Federation

Last updated: August 27, 2025

In September, the average temperature in Buy, Russian Federation hovers around 11°C (51°F), with extremes ranging from a chilly -2°C (29°F) to a pleasant 24°C (75°F). Expect about 88 mm (3.5 in) of precipitation spread over 14 days, contributing to the high average humidity of 92%. ☔️

September Temperature in Buy

In September in Buy, the average temperature is 11°C (51°F). The maximum can reach 24°C (75°F), and the minimum can be as low as -2°C (29°F). Be prepared for a variety of weather conditions, making it essential to pack layers for your trip.

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

The chart illustrates September temperature patterns in Buy, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Buy, September typically has an average temperature of 11°C (51°F), with highs reaching up to 24°C (75°F) and lows dropping to around -2°C (29°F).

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

September Precipitation in Buy

In Buy in September, the precipitation amount is 88 mm (3.5 in) over the course of 14 days.

September Precipitation Trends in Buy

The chart displays monthly precipitation patterns in Buy, 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 Buy, September typically receives around 88 mm (3.5 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 Buy

In Buy in September humidity is 92%. With an average temperature of 11°C (51°F), this humidity feels like a thick fog wrapping around you, making travel feel heavy and stifling, as each step is accompanied by a palpable weight in the air.

September Average Humidity in Buy

This chart illustrates the average monthly humidity levels in Buy, 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 Buy is approximately 92%, 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 Buy

In Buy 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 Buy for better planning.

Maximum UV Index Levels in Buy for September

The chart shows the monthly maximum UV Index (UVI) for Buy 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 Buy typically reaches 4, which falls under the moderate exposure category.

Data source: Buy 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 Buy Compares to Other Months

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

This table compares monthly weather conditions in Buy, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-8°C (18°F)	43 mm (1.7 inches)	99%	low
February Weather	-8°C (19°F)	54 mm (2.1 inches)	98%	low
March Weather	-3°C (27°F)	43 mm (1.7 inches)	94%	moderate
April Weather	4°C (39°F)	45 mm (1.8 inches)	88%	moderate
May Weather	11°C (52°F)	64 mm (2.5 inches)	79%	moderate
June Weather	16°C (61°F)	68 mm (2.7 inches)	80%	high
July Weather	18°C (64°F)	97 mm (3.8 inches)	84%	high
August Weather	16°C (61°F)	81 mm (3.2 inches)	86%	high
September Weather	11°C (51°F)	88 mm (3.5 inches)	92%	moderate
October Weather	5°C (41°F)	73 mm (2.9 inches)	93%	low
November Weather	-1°C (31°F)	63 mm (2.5 inches)	93%	low
December Weather	-6°C (21°F)	53 mm (2.1 inches)	93%	low