September Weather in Sergelen, Mongolia

Last updated: August 28, 2025

In Sergelen, Mongolia, the average temperature in September hovers around 13°C (55°F), with a minimum dip of -4°C (26°F) and occasional peaks reaching 32°C (89°F). You'll want to prepare for some rain, as 41 mm (1.6 in) of precipitation can be expected over 7 days, contributing to an average humidity of 81%.

September Temperature in Sergelen

In September in Sergelen, the average temperature is 13°C (55°F). Maximums can reach 32°C (89°F), while minimums can drop as low as -4°C (26°F). This wide temperature range means travelers should be prepared for both warm and chilly conditions, making layering essential for outdoor adventures.

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

The chart illustrates September temperature patterns in Sergelen, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Sergelen, September typically has an average temperature of 13°C (55°F), with highs reaching up to 32°C (89°F) and lows dropping to around -4°C (26°F).

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

September Precipitation in Sergelen

In Sergelen in September, the precipitation amount is 41 mm (1.6 in) spread over a duration of 7 days.

September Precipitation Trends in Sergelen

The chart displays monthly precipitation patterns in Sergelen, 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 Sergelen, September typically receives around 41 mm (1.6 inches) of precipitation spread over approximately 7 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 Sergelen

In Sergelen in September, humidity is 81%. With an average temperature of 13°C (55°F), this humidity feels like a damp blanket wrapping around you, making strolls outdoors feel heavy and slightly oppressive, which may be less than ideal for travelers looking to explore comfortably.

September Average Humidity in Sergelen

This chart illustrates the average monthly humidity levels in Sergelen, 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 Sergelen is approximately 81%, 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 Sergelen

In Sergelen in September, the maximum UV index is 6, which corresponds to a high Exposure Category. The time to burn is approximately 25 minutes. To find the hourly UV index in Sergelen, you can refer to this Hourly UV Index in Sergelen.

Maximum UV Index Levels in Sergelen for September

The chart shows the monthly maximum UV Index (UVI) for Sergelen 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 Sergelen typically reaches 6, which falls under the high exposure category.

Data source: Sergelen 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 Sergelen Compares to Other Months

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

This table compares monthly weather conditions in Sergelen, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-19°C (-2°F)	2 mm (0.1 inches)	91%	low
February Weather	-15°C (4°F)	6 mm (0.2 inches)	82%	moderate
March Weather	-4°C (24°F)	6 mm (0.3 inches)	66%	moderate
April Weather	5°C (41°F)	9 mm (0.4 inches)	60%	high
May Weather	13°C (55°F)	23 mm (0.9 inches)	66%	very high
June Weather	19°C (67°F)	48 mm (1.9 inches)	64%	very high
July Weather	22°C (71°F)	86 mm (3.4 inches)	75%	very high
August Weather	18°C (65°F)	116 mm (4.6 inches)	77%	very high
September Weather	13°C (55°F)	41 mm (1.6 inches)	81%	high
October Weather	2°C (36°F)	23 mm (0.9 inches)	76%	moderate
November Weather	-8°C (18°F)	5 mm (0.2 inches)	74%	low
December Weather	-16°C (4°F)	3 mm (0.1 inches)	84%	low