nomadseason

September Weather in Hai'an, China

Last updated: August 23, 2025

In September, the average temperature in Hai'an, China hovers around a warm 28°C (83°F). You can expect a minimum of 24°C (76°F) and a maximum of 33°C (92°F). With an average humidity of 80%, the region experiences an average precipitation of 188 mm (7.4 in) spread over 20 days. Be prepared for a humid yet vibrant atmosphere!

September Temperature in Hai'an

In September in Hai'an, the average temperature is 28°C (83°F), with maximums reaching 33°C (92°F) and minimums dropping as low as 24°C (76°F). This makes it an ideal destination for travelers looking to enjoy warm, pleasant weather.

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

The chart illustrates September temperature patterns in Hai'an, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Hai'an, September typically has an average temperature of 28°C (83°F), with highs reaching up to 33°C (92°F) and lows dropping to around 24°C (76°F).
JanFebMarAprMayJunJulAugSepOctNovDec666673778285858483797468
Data source: Temperature data for Hai'an generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Hai'an

In Hai'an in September, the precipitation amount is 188 mm (7.4 in) over a period of 20 days.

September Precipitation Trends in Hai'an

The chart displays monthly precipitation patterns in Hai'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 Hai'an, September typically receives around 188 mm (7.4 inches) of precipitation spread over approximately 20 days.
JanFebMarAprMayJunJulAugSepOctNovDec16372480911471782841882073521
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

September Humidity in Hai'an

In Hai'an in September, humidity is 80%. With an average temperature of 28°C (83°F), this humidity feels like a thick blanket enveloping you, making travel feel sluggish and sticky, as every movement generates a sheen of perspiration that clings to your skin.

September Average Humidity in Hai'an

This chart illustrates the average monthly humidity levels in Hai'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 Hai'an is approximately 80%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec66%70%72%71%76%78%87%87%80%74%71%72%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Hai'an

In Hai'an in September, the maximum UV index is 12, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, underscoring the importance of sun protection. For detailed information, you can check the Hourly UV Index in Hai'an.

Maximum UV Index Levels in Hai'an for September

The chart shows the monthly maximum UV Index (UVI) for Hai'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 Hai'an typically reaches 12, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec810121213131313121198
Data source: Hai'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 Hai'an Compares to Other Months

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

This table compares monthly weather conditions in Hai'an, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather19°C (66°F)16 mm (0.6 inches)66%very high
February Weather19°C (67°F)37 mm (1.5 inches)69%very high
March Weather23°C (73°F)24 mm (1.0 inches)72%extreme
April Weather25°C (77°F)80 mm (3.1 inches)71%extreme
May Weather28°C (82°F)91 mm (3.6 inches)76%extreme
June Weather29°C (85°F)147 mm (5.8 inches)78%extreme
July Weather29°C (85°F)178 mm (7.0 inches)87%extreme
August Weather29°C (84°F)284 mm (11.2 inches)87%extreme
September Weather28°C (83°F)188 mm (7.4 inches)80%extreme
October Weather26°C (79°F)207 mm (8.1 inches)74%extreme
November Weather23°C (74°F)35 mm (1.4 inches)71%very high
December Weather20°C (68°F)21 mm (0.8 inches)72%very high

Compare Hai'an's Climate with Cities Worldwide