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September Weather in Hailun, China

Last updated: August 23, 2025

In September, the average temperature in Hailun, China hovers around 15°C (58°F), with fluctuations from a chilly 0°C (33°F) to a warm 28°C (83°F). Expect 104 mm (4.1 in) of precipitation spread over about 10 days, accompanied by a high average humidity of 85%.

September Temperature in Hailun

In September in Hailun, the average temperature is 15°C (58°F), with maximums reaching 28°C (83°F) and minimums dropping as low as 0°C (33°F). This pleasant climate makes Hailun an ideal destination for travelers looking to enjoy a mix of warm days and cooler evenings.

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

The chart illustrates September temperature patterns in Hailun, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Hailun, September typically has an average temperature of 15°C (58°F), with highs reaching up to 28°C (83°F) and lows dropping to around 0°C (33°F).
JanFebMarAprMayJunJulAugSepOctNovDec-44264457667468584220-0
Data source: Temperature data for Hailun generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Hailun

In Hailun in September, the precipitation amount is 104 mm (4.1 in) over a period of 10 days.

September Precipitation Trends in Hailun

The chart displays monthly precipitation patterns in Hailun, 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 Hailun, September typically receives around 104 mm (4.1 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec5613327013217618910424239
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Hailun

In Hailun in September humidity is 85%. With an average temperature of 15°C (58°F), this humidity feels like an enveloping blanket, making travel feel sticky and heavy, often leading to a sense of discomfort that can drain your energy during outdoor explorations.

September Average Humidity in Hailun

This chart illustrates the average monthly humidity levels in Hailun, 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 Hailun is approximately 85%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec75%70%63%59%61%79%85%87%85%81%61%60%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Hailun

In Hailun 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 Hailun, you can refer to this Hourly UV Index in Hailun.

Maximum UV Index Levels in Hailun for September

The chart shows the monthly maximum UV Index (UVI) for Hailun 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 Hailun typically reaches 6, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec224678986421
Data source: Hailun 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 Hailun Compares to Other Months

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

This table compares monthly weather conditions in Hailun, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-20°C (-4°F)5 mm (0.2 inches)75%low
February Weather-15°C (5°F)6 mm (0.2 inches)70%low
March Weather-4°C (26°F)13 mm (0.5 inches)63%moderate
April Weather6°C (44°F)32 mm (1.2 inches)59%high
May Weather14°C (58°F)70 mm (2.7 inches)61%high
June Weather19°C (66°F)132 mm (5.2 inches)79%very high
July Weather23°C (74°F)176 mm (6.9 inches)84%very high
August Weather20°C (68°F)189 mm (7.4 inches)87%very high
September Weather15°C (58°F)104 mm (4.1 inches)85%high
October Weather5°C (42°F)24 mm (1.0 inches)80%moderate
November Weather-7°C (20°F)23 mm (0.9 inches)61%low
December Weather-18°C (0°F)9 mm (0.3 inches)60%low

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