September Weather in Ulan, China

Last updated: August 22, 2025

In September, the average temperature in Ulan, China is a pleasant 16°C (61°F). Expect a range in temperatures, with a minimum as cool as 2°C (35°F) and a maximum reaching 30°C (87°F). With 47 mm (1.8 in) of precipitation spread over 6 days, you'll want to be prepared for a few showers. The average humidity sits comfortably at 53%, making for a generally enjoyable climate!

September Temperature in Ulan

In September in Ulan, the average temperature is 16°C (61°F). Maximums can reach 30°C (87°F) and minimums can be as low as 2°C (35°F). This varied climate makes it essential for travelers to pack for both warm and cool weather while exploring the area.

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

The chart illustrates September temperature patterns in Ulan, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Ulan, September typically has an average temperature of 16°C (61°F), with highs reaching up to 30°C (87°F) and lows dropping to around 2°C (35°F).

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

September Precipitation in Ulan

In Ulan in September, the total precipitation amount is 47 mm (1.8 in) spread over the course of 6 days.

September Precipitation Trends in Ulan

The chart displays monthly precipitation patterns in Ulan, 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 Ulan, September typically receives around 47 mm (1.8 inches) of precipitation spread over approximately 6 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 Ulan

In Ulan in September humidity is 53%. With an average temperature of 16°C (61°F), this humidity feels like a gentle embrace, making it a pleasant experience for traveling, as you can enjoy outdoor activities without feeling overly muggy or sticky.

September Average Humidity in Ulan

This chart illustrates the average monthly humidity levels in Ulan, 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 Ulan is approximately 53%, 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 Ulan

In Ulan in September, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Ulan.

Maximum UV Index Levels in Ulan for September

The chart shows the monthly maximum UV Index (UVI) for Ulan 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 Ulan typically reaches 9, which falls under the very high exposure category.

Data source: Ulan 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 Ulan Compares to Other Months

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

This table compares monthly weather conditions in Ulan, 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)	2 mm (0.1 inches)	62%	moderate
February Weather	-4°C (25°F)	6 mm (0.3 inches)	60%	moderate
March Weather	4°C (40°F)	11 mm (0.5 inches)	54%	high
April Weather	11°C (51°F)	22 mm (0.9 inches)	63%	very high
May Weather	16°C (61°F)	26 mm (1.0 inches)	44%	extreme
June Weather	21°C (70°F)	50 mm (2.0 inches)	49%	extreme
July Weather	23°C (74°F)	45 mm (1.8 inches)	45%	extreme
August Weather	21°C (70°F)	59 mm (2.3 inches)	51%	extreme
September Weather	16°C (61°F)	47 mm (1.8 inches)	53%	very high
October Weather	8°C (46°F)	30 mm (1.2 inches)	62%	high
November Weather	1°C (34°F)	6 mm (0.3 inches)	62%	moderate
December Weather	-7°C (19°F)	3 mm (0.1 inches)	68%	low