September Weather in Helong, China

Last updated: August 22, 2025

In September, the average temperature in Helong, China reaches a pleasant 26°C (78°F). However, expect fluctuations, with minimums dropping to 15°C (58°F) and maximums soaring to 36°C (97°F). During this month, you'll encounter 104 mm (4.1 in) of precipitation spread over 14 days, contributing to an average humidity of 62%. Embrace the warmth mixed with occasional showers!

September Temperature in Helong

In September in Helong, the average temperature is 26°C (78°F). Maximums can reach up to 36°C (97°F), while minimums can drop to as low as 15°C (58°F). This makes it an ideal time for travelers to enjoy a warm climate with comfortable evenings.

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

The chart illustrates September temperature patterns in Helong, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Helong, September typically has an average temperature of 26°C (78°F), with highs reaching up to 36°C (97°F) and lows dropping to around 15°C (58°F).

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

September Precipitation in Helong

In Helong in September, the precipitation amount is 104 mm (4.1 in) distributed over a span of 14 days.

September Precipitation Trends in Helong

The chart displays monthly precipitation patterns in Helong, 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 Helong, September typically receives around 104 mm (4.1 inches) of precipitation spread over approximately 14 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 Helong

In Helong in September, humidity is 62%. With an average temperature of 26°C (78°F), this humidity feels like walking through a warm, damp blanket, making it essential to stay hydrated and take regular breaks while exploring the sights.

September Average Humidity in Helong

This chart illustrates the average monthly humidity levels in Helong, 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 Helong is approximately 62%, 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 Helong

In Helong 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 Helong.

Maximum UV Index Levels in Helong for September

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

Data source: Helong 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 Helong Compares to Other Months

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

This table compares monthly weather conditions in Helong, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	9°C (48°F)	47 mm (1.9 inches)	64%	high
February Weather	10°C (51°F)	97 mm (3.8 inches)	69%	very high
March Weather	15°C (59°F)	186 mm (7.3 inches)	79%	extreme
April Weather	18°C (65°F)	175 mm (6.9 inches)	81%	extreme
May Weather	23°C (73°F)	247 mm (9.7 inches)	86%	extreme
June Weather	25°C (78°F)	355 mm (14.0 inches)	83%	extreme
July Weather	28°C (83°F)	136 mm (5.4 inches)	89%	extreme
August Weather	28°C (82°F)	180 mm (7.1 inches)	84%	extreme
September Weather	26°C (78°F)	104 mm (4.1 inches)	62%	extreme
October Weather	20°C (69°F)	41 mm (1.6 inches)	64%	very high
November Weather	15°C (60°F)	70 mm (2.8 inches)	72%	very high
December Weather	10°C (50°F)	39 mm (1.5 inches)	76%	high