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September Weather in Chi'an, China

Last updated: August 22, 2025

In September, the average temperature in Chi'an, China is a warm 27°C (80°F). Expect a range of temperatures from a cool 17°C (63°F) to a toasty 39°C (102°F). During this month, precipitation averages 90 mm (3.5 in) over 11 days, accompanied by a comfortable average humidity level of 72%.

September Temperature in Chi'an

In September in Chi'an, the average temperature is 27°C (80°F). Maximums can reach 39°C (102°F) and minimums can be as low as 17°C (63°F). This warm climate makes Chi'an an ideal destination for travelers seeking sunny weather and outdoor activities.

September Weather in Chi'an: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Chi'an, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Chi'an, September typically has an average temperature of 27°C (80°F), with highs reaching up to 39°C (102°F) and lows dropping to around 17°C (63°F).
JanFebMarAprMayJunJulAugSepOctNovDec454756657378858680695948
Data source: Temperature data for Chi'an 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 Chi'an

In Chi'an in September, the total precipitation amounts to 90 mm (3.5 in) over the course of 11 days.

September Precipitation Trends in Chi'an

The chart displays monthly precipitation patterns in Chi'an, 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 Chi'an, September typically receives around 90 mm (3.5 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec69711289718228222613390546667
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Chi'an

In Chi'an in September humidity is 72%. With an average temperature of 27°C (80°F), this humidity feels like a warm, sticky embrace that can make outdoor activities exhausting and often requires frequent breaks in the shade for travelers to stay comfortable.

September Average Humidity in Chi'an

This chart illustrates the average monthly humidity levels in Chi'an, 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 Chi'an is approximately 72%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec65%71%81%86%87%87%91%87%72%74%80%78%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Chi'an

In Chi'an 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 Chi'an.

Maximum UV Index Levels in Chi'an for September

The chart shows the monthly maximum UV Index (UVI) for Chi'an 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 Chi'an typically reaches 11, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec6710101212121211865
Data source: Chi'an 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 Chi'an Compares to Other Months

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

This table compares monthly weather conditions in Chi'an, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather7°C (45°F)69 mm (2.7 inches)65%high
February Weather8°C (47°F)71 mm (2.8 inches)71%high
March Weather14°C (57°F)128 mm (5.1 inches)81%very high
April Weather18°C (65°F)97 mm (3.8 inches)86%very high
May Weather23°C (74°F)181 mm (7.1 inches)87%extreme
June Weather25°C (78°F)282 mm (11.1 inches)87%extreme
July Weather29°C (85°F)226 mm (8.9 inches)91%extreme
August Weather30°C (87°F)133 mm (5.2 inches)87%extreme
September Weather27°C (80°F)90 mm (3.5 inches)72%extreme
October Weather20°C (69°F)54 mm (2.1 inches)74%very high
November Weather15°C (59°F)66 mm (2.6 inches)80%high
December Weather9°C (48°F)67 mm (2.6 inches)78%moderate

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