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September Weather in Jiannan, China

Last updated: August 22, 2025

In Jiannan, China, the average temperature in September hovers around 22°C (71°F), with the mercury dipping as low as 13°C (56°F) and soaring up to 34°C (93°F). Be prepared for some wet days, as precipitation amounts reach 171 mm (6.7 in) over approximately 18 days. The atmosphere is often humid, with an average humidity level of 77%.

September Temperature in Jiannan

In September in Jiannan, the average temperature is 22°C (71°F), with maximums reaching up to 34°C (93°F) and minimums dropping as low as 13°C (56°F). This makes it an ideal time for travelers looking to enjoy warm, pleasant weather while exploring the sights.

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

The chart illustrates September temperature patterns in Jiannan, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Jiannan, September typically has an average temperature of 22°C (71°F), with highs reaching up to 34°C (93°F) and lows dropping to around 13°C (56°F).
JanFebMarAprMayJunJulAugSepOctNovDec414454616773787971615243
Data source: Temperature data for Jiannan 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 Jiannan

In Jiannan in September, the precipitation amount is 171 mm (6.7 in) over the course of 18 days.

September Precipitation Trends in Jiannan

The chart displays monthly precipitation patterns in Jiannan, 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 Jiannan, September typically receives around 171 mm (6.7 inches) of precipitation spread over approximately 18 days.
JanFebMarAprMayJunJulAugSepOctNovDec44581281721812282732161711187540
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Jiannan

In Jiannan in September, humidity is 77%. With an average temperature of 22°C (71°F), this humidity feels like a warm, enveloping blanket that can make walking around feel a bit stifling, requiring frequent breaks in shaded areas and plenty of hydration.

September Average Humidity in Jiannan

This chart illustrates the average monthly humidity levels in Jiannan, 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 Jiannan is approximately 77%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec72%76%87%82%83%84%87%85%77%81%86%81%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Jiannan

In Jiannan 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 Jiannan.

Maximum UV Index Levels in Jiannan for September

The chart shows the monthly maximum UV Index (UVI) for Jiannan 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 Jiannan typically reaches 11, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec5610111212121211975
Data source: Jiannan 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 Jiannan Compares to Other Months

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

This table compares monthly weather conditions in Jiannan, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather5°C (42°F)44 mm (1.7 inches)72%moderate
February Weather7°C (45°F)58 mm (2.3 inches)76%high
March Weather12°C (54°F)128 mm (5.0 inches)87%very high
April Weather16°C (61°F)172 mm (6.8 inches)82%extreme
May Weather19°C (67°F)181 mm (7.1 inches)83%extreme
June Weather23°C (73°F)228 mm (9.0 inches)84%extreme
July Weather26°C (78°F)273 mm (10.7 inches)87%extreme
August Weather26°C (79°F)216 mm (8.5 inches)85%extreme
September Weather22°C (71°F)171 mm (6.7 inches)77%extreme
October Weather16°C (61°F)118 mm (4.6 inches)81%very high
November Weather11°C (52°F)75 mm (3.0 inches)86%high
December Weather6°C (44°F)40 mm (1.6 inches)81%moderate

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