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September Weather in Heris, Iran

Last updated: August 23, 2025

In September, the average temperature in Heris, Iran is a pleasant 18°C (64°F). Expect a minimum of 3°C (37°F) and a maximum reaching up to 34°C (94°F). During this month, the area typically receives 9 mm (0.4 in) of precipitation over just 2 days. With an average humidity of 59%, the climate remains fairly comfortable and inviting for outdoor activities.

September Temperature in Heris

In September in Heris, the average temperature is 18°C (64°F). Maximums can reach 34°C (94°F), and minimums can be as low as 3°C (37°F). Be sure to pack both light clothing for the warm days and warmer layers for the cooler evenings.

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

The chart illustrates September temperature patterns in Heris, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Heris, September typically has an average temperature of 18°C (64°F), with highs reaching up to 34°C (94°F) and lows dropping to around 3°C (37°F).
JanFebMarAprMayJunJulAugSepOctNovDec222839485767726964523931
Data source: Temperature data for Heris 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 Heris

In Heris in September, the precipitation amount is 9 mm (0.4 in) over the course of 2 days.

September Precipitation Trends in Heris

The chart displays monthly precipitation patterns in Heris, 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 Heris, September typically receives around 9 mm (0.4 inches) of precipitation spread over approximately 2 days.
JanFebMarAprMayJunJulAugSepOctNovDec3156657749151189323542
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Heris

In Heris in September, humidity is 59%. With an average temperature of 18°C (64°F), this humidity feels like a mild embrace, making it comfortable for traveling and perfect for exploring the sights without feeling too hot or sticky.

September Average Humidity in Heris

This chart illustrates the average monthly humidity levels in Heris, 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 Heris is approximately 59%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec77%78%76%69%68%62%59%46%59%76%79%78%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Heris

In Heris in September, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Heris.

Maximum UV Index Levels in Heris for September

The chart shows the monthly maximum UV Index (UVI) for Heris 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 Heris typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec45109121212119743
Data source: Heris 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 Heris Compares to Other Months

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

This table compares monthly weather conditions in Heris, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-6°C (22°F)31 mm (1.2 inches)77%moderate
February Weather-2°C (28°F)56 mm (2.2 inches)78%moderate
March Weather4°C (39°F)65 mm (2.6 inches)76%very high
April Weather9°C (48°F)77 mm (3.0 inches)69%very high
May Weather14°C (57°F)49 mm (1.9 inches)68%extreme
June Weather20°C (68°F)15 mm (0.6 inches)62%extreme
July Weather22°C (72°F)11 mm (0.4 inches)59%extreme
August Weather21°C (70°F)8 mm (0.3 inches)46%extreme
September Weather18°C (64°F)9 mm (0.4 inches)59%very high
October Weather11°C (52°F)32 mm (1.3 inches)76%high
November Weather4°C (39°F)35 mm (1.4 inches)78%moderate
December Weather-1°C (31°F)42 mm (1.7 inches)77%moderate

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