September Weather in Ust'-Kut, Russian Federation

Last updated: August 27, 2025

In Ust'-Kut, Russian Federation, the average temperature in September typically hovers around 7°C (46°F). Visitors can expect a temperature range that may dip to a chilly -5°C (23°F) or peak at a pleasant 25°C (78°F). During this time, the area receives about 56 mm (2.2 in) of precipitation over approximately 13 days, and the average humidity rests at a comfortable 82%.

September Temperature in Ust'-Kut

In September in Ust'-Kut, the average temperature is 7°C (46°F). Maximums can reach 25°C (78°F), while minimums can drop as low as -5°C (23°F). Travelers should be prepared for a wide range of temperatures and pack accordingly.

September Weather in Ust'-Kut: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Ust'-Kut, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Ust'-Kut, September typically has an average temperature of 7°C (46°F), with highs reaching up to 25°C (78°F) and lows dropping to around -5°C (23°F).

Data source: Temperature data for Ust'-Kut generated using information from the Copernicus Climate Change Service.

September Precipitation in Ust'-Kut

In Ust'-Kut in September, the precipitation amount is 56 mm (2.2 in) over the course of 13 days.

September Precipitation Trends in Ust'-Kut

The chart displays monthly precipitation patterns in Ust'-Kut, 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 Ust'-Kut, September typically receives around 56 mm (2.2 inches) of precipitation spread over approximately 13 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 Ust'-Kut

In Ust'-Kut in September humidity is 82%. With an average temperature of 7°C (46°F), this humidity feels like a damp chill that seeps into your bones, making travel uncomfortable and necessitating extra layers to stay warm and dry.

September Average Humidity in Ust'-Kut

This chart illustrates the average monthly humidity levels in Ust'-Kut, 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 Ust'-Kut is approximately 82%, 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 Ust'-Kut

In Ust'-Kut 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 Ust'-Kut for better planning.

Maximum UV Index Levels in Ust'-Kut for September

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

Data source: Ust'-Kut 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 Ust'-Kut Compares to Other Months

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

This table compares monthly weather conditions in Ust'-Kut, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-23°C (-8°F)	21 mm (0.8 inches)	99%	low
February Weather	-20°C (-3°F)	20 mm (0.8 inches)	96%	low
March Weather	-9°C (17°F)	29 mm (1.2 inches)	88%	moderate
April Weather	1°C (34°F)	30 mm (1.2 inches)	83%	moderate
May Weather	8°C (47°F)	53 mm (2.1 inches)	76%	high
June Weather	16°C (62°F)	53 mm (2.1 inches)	66%	high
July Weather	19°C (66°F)	43 mm (1.7 inches)	75%	high
August Weather	16°C (61°F)	39 mm (1.5 inches)	72%	high
September Weather	7°C (46°F)	56 mm (2.2 inches)	82%	moderate
October Weather	-1°C (31°F)	36 mm (1.4 inches)	94%	moderate
November Weather	-13°C (9°F)	41 mm (1.6 inches)	100%	low
December Weather	-22°C (-8°F)	42 mm (1.6 inches)	100%	low