September Weather in Bayansayr, Mongolia

Last updated: August 28, 2025

In September, the average temperature in Bayansayr, Mongolia hovers around 14°C (58°F), offering a comfortable climate for exploration. Be prepared for temperature fluctuations, as it can dip to a chilly -4°C (25°F) or soar to a warm 32°C (89°F). With 12 mm (0.5 in) of precipitation spread over 3 days, a light raincoat might come in handy. The average humidity is a pleasant 46%, ensuring a refreshing atmosphere throughout the month.

September Temperature in Bayansayr

In September in Bayansayr, the average temperature is 14°C (58°F). The maximum can reach 32°C (89°F), and the minimum can be as low as -4°C (25°F). Be prepared for a wide range of temperatures during your travels, so pack accordingly!

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

The chart illustrates September temperature patterns in Bayansayr, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Bayansayr, September typically has an average temperature of 14°C (58°F), with highs reaching up to 32°C (89°F) and lows dropping to around -4°C (25°F).

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

September Precipitation in Bayansayr

In Bayansayr in September, the precipitation amount is 12 mm (0.5 in) during a span of 3 days.

September Precipitation Trends in Bayansayr

The chart displays monthly precipitation patterns in Bayansayr, 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 Bayansayr, September typically receives around 12 mm (0.5 inches) of precipitation spread over approximately 3 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 Bayansayr

In Bayansayr in September, humidity is 46%. With an average temperature of 14°C (58°F), this humidity feels like a refreshing yet slightly brisk breeze, making it quite pleasant for traveling as you can comfortably explore without feeling overheated.

September Average Humidity in Bayansayr

This chart illustrates the average monthly humidity levels in Bayansayr, 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 Bayansayr is approximately 46%, 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 Bayansayr

In Bayansayr in September, the maximum UV index is 7, which corresponds to the high Exposure Category. This means that the time to burn is approximately 25 minutes. For more detailed information, you can check the Hourly UV Index in Bayansayr.

Maximum UV Index Levels in Bayansayr for September

The chart shows the monthly maximum UV Index (UVI) for Bayansayr 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 Bayansayr typically reaches 7, which falls under the high exposure category.

Data source: Bayansayr 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 Bayansayr Compares to Other Months

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

This table compares monthly weather conditions in Bayansayr, 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 (6°F)	2 mm (0.1 inches)	89%	low
February Weather	-10°C (14°F)	2 mm (0.1 inches)	81%	moderate
March Weather	-1°C (31°F)	5 mm (0.2 inches)	60%	high
April Weather	8°C (47°F)	6 mm (0.2 inches)	51%	very high
May Weather	15°C (59°F)	11 mm (0.4 inches)	35%	very high
June Weather	21°C (70°F)	11 mm (0.4 inches)	35%	very high
July Weather	23°C (73°F)	34 mm (1.3 inches)	36%	very high
August Weather	21°C (69°F)	20 mm (0.8 inches)	42%	very high
September Weather	14°C (58°F)	12 mm (0.5 inches)	46%	high
October Weather	4°C (39°F)	3 mm (0.1 inches)	49%	moderate
November Weather	-6°C (22°F)	1 mm (0.1 inches)	64%	moderate
December Weather	-14°C (8°F)	1 mm (0.0 inches)	89%	low