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September Weather in Helie, China

Last updated: August 23, 2025

In September, the average temperature in Helie, China reaches a comfortable 25°C (77°F). You might experience a minimum of 17°C (63°F) and a warm maximum of 34°C (93°F). With 121 mm (4.8 in) of precipitation spread over 12 days, be prepared for occasional rain showers. The climate is quite humid, with an average humidity level of 81%, adding to the lush atmosphere of the region.

September Temperature in Helie

In September in Helie, the average temperature is 25°C (77°F). Maximum temperatures can reach 34°C (93°F), while minimums can dip as low as 17°C (63°F). This pleasant climate makes Helie an ideal destination for travelers seeking a warm getaway.

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

The chart illustrates September temperature patterns in Helie, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Helie, September typically has an average temperature of 25°C (77°F), with highs reaching up to 34°C (93°F) and lows dropping to around 17°C (63°F).
JanFebMarAprMayJunJulAugSepOctNovDec414454627277848577665745
Data source: Temperature data for Helie 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 Helie

In Helie in September, the precipitation amount reaches 121 mm (4.8 in) over the course of 12 days.

September Precipitation Trends in Helie

The chart displays monthly precipitation patterns in Helie, 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 Helie, September typically receives around 121 mm (4.8 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec69729081125188283158121555050
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Helie

In Helie in September, humidity is 81%. With an average temperature of 25°C (77°F), this humidity feels like walking through a warm, thick blanket, making traveling quite challenging as you may feel sticky and sluggish, requiring frequent breaks to stay refreshed and hydrated.

September Average Humidity in Helie

This chart illustrates the average monthly humidity levels in Helie, 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 Helie is approximately 81%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec70%73%81%87%87%89%93%91%81%80%82%77%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Helie

In Helie in September, the maximum UV index reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, you can check the Hourly UV Index in Helie.

Maximum UV Index Levels in Helie for September

The chart shows the monthly maximum UV Index (UVI) for Helie 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 Helie typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec568101011111110764
Data source: Helie 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 Helie Compares to Other Months

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

This table compares monthly weather conditions in Helie, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather5°C (41°F)69 mm (2.7 inches)70%moderate
February Weather6°C (44°F)72 mm (2.8 inches)73%high
March Weather12°C (54°F)90 mm (3.6 inches)81%very high
April Weather17°C (62°F)81 mm (3.2 inches)87%very high
May Weather22°C (72°F)125 mm (4.9 inches)87%very high
June Weather25°C (78°F)187 mm (7.4 inches)89%extreme
July Weather29°C (84°F)283 mm (11.2 inches)93%extreme
August Weather29°C (85°F)158 mm (6.2 inches)91%extreme
September Weather25°C (77°F)121 mm (4.8 inches)81%very high
October Weather19°C (67°F)55 mm (2.2 inches)80%high
November Weather14°C (57°F)50 mm (2.0 inches)82%high
December Weather7°C (45°F)50 mm (2.0 inches)77%moderate

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