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September Weather in Yunyan, China

Last updated: August 22, 2025

In September, the average temperature in Yunyan, China hovers around 26°C (79°F). Expect a comfortable minimum of 16°C (62°F) and the occasional peak at a sizzling 38°C (100°F). This month also brings about 83 mm (3.3 in) of rainfall spread over 13 days, contributing to an average humidity level of 62%. Stay prepared for both sun and showers!

September Temperature in Yunyan

In September in Yunyan, the average temperature is 26°C (79°F). Maximums can reach 38°C (100°F), and minimums can be as low as 16°C (62°F). It's an ideal time for travelers who enjoy warm weather while still having the option for cooler evenings.

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

The chart illustrates September temperature patterns in Yunyan, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Yunyan, September typically has an average temperature of 26°C (79°F), with highs reaching up to 38°C (100°F) and lows dropping to around 16°C (62°F).
JanFebMarAprMayJunJulAugSepOctNovDec464959657479838279675948
Data source: Temperature data for Yunyan 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 Yunyan

In Yunyan in September, the precipitation amount is 83 mm (3.3 in) over a span of 13 days.

September Precipitation Trends in Yunyan

The chart displays monthly precipitation patterns in Yunyan, 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 Yunyan, September typically receives around 83 mm (3.3 inches) of precipitation spread over approximately 13 days.
JanFebMarAprMayJunJulAugSepOctNovDec53941631471472149810283537334
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Yunyan

In Yunyan in September humidity is 62%. With an average temperature of 26°C (79°F), this humidity feels like a warm embrace, making travel enjoyable but slightly sticky, as the air wraps around you with a tropical touch.

September Average Humidity in Yunyan

This chart illustrates the average monthly humidity levels in Yunyan, 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 Yunyan is approximately 62%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec63%66%77%73%85%83%89%88%62%56%63%70%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Yunyan

In Yunyan 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 Yunyan.

Maximum UV Index Levels in Yunyan for September

The chart shows the monthly maximum UV Index (UVI) for Yunyan 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 Yunyan typically reaches 11, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec79111213131313111086
Data source: Yunyan 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 Yunyan Compares to Other Months

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

This table compares monthly weather conditions in Yunyan, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather8°C (46°F)53 mm (2.1 inches)63%high
February Weather9°C (49°F)94 mm (3.7 inches)66%very high
March Weather15°C (59°F)163 mm (6.4 inches)77%extreme
April Weather18°C (65°F)147 mm (5.8 inches)73%extreme
May Weather23°C (74°F)147 mm (5.8 inches)85%extreme
June Weather26°C (79°F)214 mm (8.4 inches)83%extreme
July Weather28°C (83°F)98 mm (3.9 inches)89%extreme
August Weather28°C (83°F)102 mm (4.0 inches)88%extreme
September Weather26°C (79°F)83 mm (3.3 inches)62%extreme
October Weather19°C (67°F)53 mm (2.1 inches)56%very high
November Weather15°C (59°F)73 mm (2.9 inches)63%very high
December Weather9°C (49°F)34 mm (1.4 inches)70%high

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