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September Weather in Keyihe, China

Last updated: August 22, 2025

In September, the average temperature in Keyihe, China hovers around 9°C (48°F), with a range that can dip to a chilly -5°C (23°F) and reach a pleasant 27°C (81°F). Expect 97 mm (3.8 in) of precipitation spread over about 12 days, contributing to a high average humidity of 86%. Whether you're planning a visit or just curious, this locale offers a unique climate experience!

September Temperature in Keyihe

In September in Keyihe, the average temperature is 9°C (48°F). The maximum can reach 27°C (81°F), and the minimum can be as low as -5°C (23°F). This range makes it an ideal time for travelers seeking a mix of mild weather and the chance to experience both warm days and cool nights.

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

The chart illustrates September temperature patterns in Keyihe, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Keyihe, September typically has an average temperature of 9°C (48°F), with highs reaching up to 27°C (81°F) and lows dropping to around -5°C (23°F).
JanFebMarAprMayJunJulAugSepOctNovDec-10-315344858655948319-9
Data source: Temperature data for Keyihe 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 Keyihe

In Keyihe in September, the precipitation amount is 97 mm (3.8 in) spread over 12 days.

September Precipitation Trends in Keyihe

The chart displays monthly precipitation patterns in Keyihe, 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 Keyihe, September typically receives around 97 mm (3.8 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec461920671141681679743134
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Keyihe

In Keyihe in September, humidity is 86%. With an average temperature of 9°C (48°F), this humidity feels like a damp chill that wraps around you, making outdoor activities uncomfortable and travel less enjoyable.

September Average Humidity in Keyihe

This chart illustrates the average monthly humidity levels in Keyihe, 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 Keyihe is approximately 86%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec96%89%79%73%77%81%86%85%86%86%89%96%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Keyihe

In Keyihe in September, the maximum UV index reaches 5, which corresponds to a moderate Exposure Category. Under these conditions, the estimated time to burn is approximately 30 minutes. For more details, you can check the Hourly UV Index in Keyihe.

Maximum UV Index Levels in Keyihe for September

The chart shows the monthly maximum UV Index (UVI) for Keyihe 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 Keyihe typically reaches 5, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec124678985321
Data source: Keyihe 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 Keyihe Compares to Other Months

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

This table compares monthly weather conditions in Keyihe, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-23°C (-10°F)4 mm (0.1 inches)96%low
February Weather-19°C (-3°F)6 mm (0.2 inches)89%low
March Weather-9°C (15°F)19 mm (0.7 inches)79%moderate
April Weather1°C (34°F)20 mm (0.8 inches)72%high
May Weather9°C (48°F)67 mm (2.6 inches)77%high
June Weather15°C (59°F)114 mm (4.5 inches)81%very high
July Weather18°C (65°F)168 mm (6.6 inches)86%very high
August Weather15°C (59°F)167 mm (6.6 inches)85%very high
September Weather9°C (48°F)97 mm (3.8 inches)86%moderate
October Weather0°C (31°F)43 mm (1.7 inches)86%moderate
November Weather-13°C (10°F)13 mm (0.5 inches)89%low
December Weather-23°C (-9°F)4 mm (0.1 inches)96%low

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