September Weather in Changchun, China

Last updated: August 23, 2025

In September, the average temperature in Changchun, China reaches a pleasant 27°C (81°F), with a minimum of 20°C (69°F) and a maximum of 35°C (96°F). Expect about 82 mm (3.2 in) of precipitation spread across 12 days, and enjoy an average humidity of 67% during this vibrant month.

September Temperature in Changchun

In September, in Changchun, the average temperature is 27°C (81°F), with maximums reaching up to 35°C (96°F) and minimums dropping as low as 20°C (69°F). This makes Changchun an ideal destination for travelers looking to enjoy warm weather and pleasant conditions.

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

The chart illustrates September temperature patterns in Changchun, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Changchun, September typically has an average temperature of 27°C (81°F), with highs reaching up to 35°C (96°F) and lows dropping to around 20°C (69°F).

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

September Precipitation in Changchun

In Changchun in September, the precipitation amount is 82 mm (3.2 in) occurring over a span of 12 days.

September Precipitation Trends in Changchun

The chart displays monthly precipitation patterns in Changchun, 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 Changchun, September typically receives around 82 mm (3.2 inches) of precipitation spread over approximately 12 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 Changchun

In Changchun in September, humidity is 67%. With an average temperature of 27°C (81°F), this humidity feels like a warm, sticky embrace, making outdoor activities feel more strenuous and prompting travelers to seek shade and hydration frequently.

September Average Humidity in Changchun

This chart illustrates the average monthly humidity levels in Changchun, 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 Changchun is approximately 67%, 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 Changchun

In Changchun in September, the maximum UV index reaches 11, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's essential to take precautions. For more details, you can check the Hourly UV Index in Changchun.

Maximum UV Index Levels in Changchun for September

The chart shows the monthly maximum UV Index (UVI) for Changchun 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 Changchun typically reaches 11, which falls under the extreme exposure category.

Data source: Changchun 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 Changchun Compares to Other Months

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

This table compares monthly weather conditions in Changchun, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	12°C (53°F)	42 mm (1.6 inches)	66%	high
February Weather	11°C (53°F)	71 mm (2.8 inches)	71%	very high
March Weather	15°C (58°F)	128 mm (5.0 inches)	81%	very high
April Weather	18°C (65°F)	90 mm (3.5 inches)	84%	extreme
May Weather	23°C (73°F)	124 mm (4.9 inches)	87%	extreme
June Weather	26°C (79°F)	267 mm (10.5 inches)	84%	extreme
July Weather	29°C (84°F)	115 mm (4.5 inches)	88%	extreme
August Weather	29°C (84°F)	240 mm (9.5 inches)	85%	extreme
September Weather	27°C (81°F)	82 mm (3.2 inches)	67%	extreme
October Weather	23°C (73°F)	84 mm (3.3 inches)	72%	very high
November Weather	18°C (65°F)	70 mm (2.7 inches)	77%	very high
December Weather	14°C (57°F)	36 mm (1.4 inches)	80%	high