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September Weather in Yi'an, China

Last updated: August 23, 2025

In September, the average temperature in Yi'an, China sits at a comfortable 14°C (58°F), with minimums dipping to 0°C (31°F) and maximums reaching up to 29°C (84°F). Expect a average precipitation of 95 mm (3.8 in) spread over 10 days, and a notably high humidity level of 85%.

September Temperature in Yi'an

In September in Yi'an, the average temperature is 14°C (58°F). Maximum temperatures can reach 29°C (84°F), while the minimum can drop as low as 0°C (31°F). This variation makes Yi'an a great destination for travelers seeking both warm days and cool evenings.

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

The chart illustrates September temperature patterns in Yi'an, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Yi'an, September typically has an average temperature of 14°C (58°F), with highs reaching up to 29°C (84°F) and lows dropping to around 0°C (31°F).
JanFebMarAprMayJunJulAugSepOctNovDec-352643576774685841200
Data source: Temperature data for Yi'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 Yi'an

In Yi'an in September, the precipitation amount is 95 mm (3.8 in) over the course of 10 days.

September Precipitation Trends in Yi'an

The chart displays monthly precipitation patterns in Yi'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 Yi'an, September typically receives around 95 mm (3.8 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec351131411111521779524155
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Yi'an

In Yi'an in September, humidity is 85%. With an average temperature of 14°C (58°F), this humidity feels like a thick blanket wrapping around you, making even short walks feel heavy and exhausting for traveling.

September Average Humidity in Yi'an

This chart illustrates the average monthly humidity levels in Yi'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 Yi'an 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 Yi'an

In Yi'an 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 Yi'an, you can refer to this Hourly UV Index in Yi'an.

Maximum UV Index Levels in Yi'an for September

The chart shows the monthly maximum UV Index (UVI) for Yi'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 Yi'an typically reaches 6, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec224678886421
Data source: Yi'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 Yi'an Compares to Other Months

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

This table compares monthly weather conditions in Yi'an, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-20°C (-3°F)3 mm (0.1 inches)75%low
February Weather-15°C (5°F)5 mm (0.2 inches)70%low
March Weather-3°C (27°F)11 mm (0.4 inches)63%moderate
April Weather6°C (44°F)31 mm (1.2 inches)59%high
May Weather14°C (58°F)41 mm (1.6 inches)61%high
June Weather19°C (67°F)111 mm (4.4 inches)79%very high
July Weather24°C (75°F)152 mm (6.0 inches)84%very high
August Weather20°C (68°F)177 mm (7.0 inches)87%very high
September Weather14°C (58°F)95 mm (3.8 inches)85%high
October Weather5°C (41°F)24 mm (0.9 inches)80%moderate
November Weather-7°C (20°F)15 mm (0.6 inches)61%low
December Weather-18°C (0°F)5 mm (0.2 inches)60%low

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