September Weather in Arvayheer, Mongolia

Last updated: August 28, 2025

In September, the average temperature in Arvayheer, Mongolia hovers around 10°C (51°F). During this time, you can experience a wide range of temperatures, from a chilly -8°C (19°F) to a surprisingly warm 27°C (81°F). Expect 22 mm (0.9 in) of precipitation over 5 days, accompanied by an average humidity of 65%.

September Temperature in Arvayheer

In September in Arvayheer, the average temperature is 10°C (51°F). Maximums can reach 27°C (81°F) and minimums can be as low as -8°C (19°F). Be prepared for a wide range of temperatures and pack accordingly for your travels.

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

The chart illustrates September temperature patterns in Arvayheer, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Arvayheer, September typically has an average temperature of 10°C (51°F), with highs reaching up to 27°C (81°F) and lows dropping to around -8°C (19°F).

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

September Precipitation in Arvayheer

In Arvayheer in September, the total precipitation amount is 22 mm (0.9 in) spread over a period of 5 days.

September Precipitation Trends in Arvayheer

The chart displays monthly precipitation patterns in Arvayheer, 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 Arvayheer, September typically receives around 22 mm (0.9 inches) of precipitation spread over approximately 5 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 Arvayheer

In Arvayheer in September, humidity is 65%. With an average temperature of 10°C (51°F), this humidity feels like a chilly embrace that can make outdoor activities slightly uncomfortable, adding a dampness to the air that clings to your skin and requires a light jacket to stay cozy while exploring.

September Average Humidity in Arvayheer

This chart illustrates the average monthly humidity levels in Arvayheer, 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 Arvayheer is approximately 65%, 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 Arvayheer

In Arvayheer 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 Arvayheer.

Maximum UV Index Levels in Arvayheer for September

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

Data source: Arvayheer 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 Arvayheer Compares to Other Months

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

This table compares monthly weather conditions in Arvayheer, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-16°C (3°F)	2 mm (0.1 inches)	89%	low
February Weather	-13°C (8°F)	7 mm (0.3 inches)	78%	moderate
March Weather	-4°C (25°F)	12 mm (0.5 inches)	66%	moderate
April Weather	3°C (38°F)	17 mm (0.7 inches)	64%	very high
May Weather	10°C (50°F)	17 mm (0.7 inches)	52%	very high
June Weather	16°C (61°F)	24 mm (0.9 inches)	59%	very high
July Weather	18°C (65°F)	63 mm (2.5 inches)	63%	very high
August Weather	15°C (60°F)	62 mm (2.5 inches)	62%	very high
September Weather	10°C (51°F)	22 mm (0.9 inches)	65%	high
October Weather	1°C (34°F)	9 mm (0.4 inches)	65%	moderate
November Weather	-7°C (19°F)	5 mm (0.2 inches)	69%	moderate
December Weather	-15°C (5°F)	4 mm (0.2 inches)	86%	low