September Weather in Heilongkou, China

Last updated: August 22, 2025

In Heilongkou, China, the average temperature in September is a comfortable 17°C (63°F). However, temperatures can vary significantly, with a minimum of 9°C (48°F) and a maximum reaching up to 29°C (84°F). Expect 202 mm (8.0 in) of precipitation spread over 14 days, and enjoy the ambiance enveloped by an average humidity of 81%.

September Temperature in Heilongkou

In September in Heilongkou, the average temperature is 17°C (63°F). Maximums can reach 29°C (84°F), while minimums can drop to as low as 9°C (48°F). This mild climate makes it an ideal time for outdoor activities and exploring the local sights.

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

The chart illustrates September temperature patterns in Heilongkou, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Heilongkou, September typically has an average temperature of 17°C (63°F), with highs reaching up to 29°C (84°F) and lows dropping to around 9°C (48°F).

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

September Precipitation in Heilongkou

In Heilongkou in September, the precipitation amount is 202 mm (8.0 in) distributed over the course of 14 days.

September Precipitation Trends in Heilongkou

The chart displays monthly precipitation patterns in Heilongkou, 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 Heilongkou, September typically receives around 202 mm (8.0 inches) of precipitation spread over approximately 14 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 Heilongkou

In Heilongkou in September humidity is 81%. With an average temperature of 17°C (63°F), this humidity feels like a warm blanket enveloping you, making travel slightly oppressive and calling for frequent breaks in air-conditioned spaces to recharge and enjoy your journey comfortably.

September Average Humidity in Heilongkou

This chart illustrates the average monthly humidity levels in Heilongkou, 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 Heilongkou 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 Heilongkou

In Heilongkou in September, the maximum UV index reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, you can check the Hourly UV Index in Heilongkou.

Maximum UV Index Levels in Heilongkou for September

The chart shows the monthly maximum UV Index (UVI) for Heilongkou 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 Heilongkou typically reaches 10, which falls under the very high exposure category.

Data source: Heilongkou 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 Heilongkou Compares to Other Months

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

This table compares monthly weather conditions in Heilongkou, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-1°C (30°F)	20 mm (0.8 inches)	79%	moderate
February Weather	2°C (35°F)	31 mm (1.2 inches)	82%	high
March Weather	7°C (46°F)	52 mm (2.1 inches)	88%	very high
April Weather	12°C (53°F)	79 mm (3.1 inches)	84%	very high
May Weather	16°C (62°F)	67 mm (2.6 inches)	77%	extreme
June Weather	20°C (68°F)	154 mm (6.1 inches)	82%	extreme
July Weather	22°C (72°F)	147 mm (5.8 inches)	85%	extreme
August Weather	22°C (71°F)	153 mm (6.0 inches)	83%	extreme
September Weather	17°C (63°F)	202 mm (8.0 inches)	81%	very high
October Weather	10°C (51°F)	111 mm (4.4 inches)	87%	very high
November Weather	5°C (42°F)	36 mm (1.4 inches)	86%	high
December Weather	0°C (32°F)	13 mm (0.5 inches)	84%	moderate