nomadseason

September Weather in Avellaneda, Argentina

Last updated: August 22, 2025

In September, the average temperature in Avellaneda, Argentina is a comfortable 14°C (58°F). Expect a minimum of 3°C (37°F) and a pleasant maximum of 26°C (79°F). During this month, precipitation averages 78 mm (3.1 in), typically spread over 6 days. Additionally, the average humidity sits at a moderate 72%, making it a unique experience for visitors.

September Temperature in Avellaneda

In September in Avellaneda, the average temperature is 14°C (58°F), with maximums reaching up to 26°C (79°F) and minimums dropping as low as 3°C (37°F). This mild climate makes it an ideal time for travelers to explore the outdoors and enjoy the local attractions.

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

The chart illustrates September temperature patterns in Avellaneda, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Avellaneda, September typically has an average temperature of 14°C (58°F), with highs reaching up to 26°C (79°F) and lows dropping to around 3°C (37°F).
JanFebMarAprMayJunJulAugSepOctNovDec767370665854515458626872
Data source: Temperature data for Avellaneda 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 Avellaneda

In Avellaneda in September, the precipitation amount is 78 mm (3.1 in) spread over 6 days.

September Precipitation Trends in Avellaneda

The chart displays monthly precipitation patterns in Avellaneda, 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 Avellaneda, September typically receives around 78 mm (3.1 inches) of precipitation spread over approximately 6 days.
JanFebMarAprMayJunJulAugSepOctNovDec626975797161654878926765
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

September Humidity in Avellaneda

In Avellaneda in September, humidity is 72%. With an average temperature of 14°C (58°F), this humidity feels like a damp blanket wrapping around you, making walking and exploring slightly uncomfortable and requiring frequent breaks for hydration.

September Average Humidity in Avellaneda

This chart illustrates the average monthly humidity levels in Avellaneda, 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 Avellaneda is approximately 72%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec51%61%66%80%85%80%69%66%72%63%59%56%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Avellaneda

In Avellaneda in September, the maximum UV index is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to the Hourly UV Index in Avellaneda.

Maximum UV Index Levels in Avellaneda for September

The chart shows the monthly maximum UV Index (UVI) for Avellaneda 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 Avellaneda typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec141211753468101314
Data source: Avellaneda 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 Avellaneda Compares to Other Months

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

This table compares monthly weather conditions in Avellaneda, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather24°C (76°F)62 mm (2.5 inches)50%extreme
February Weather23°C (74°F)69 mm (2.7 inches)61%extreme
March Weather21°C (70°F)75 mm (3.0 inches)66%extreme
April Weather19°C (66°F)79 mm (3.1 inches)80%high
May Weather15°C (58°F)71 mm (2.8 inches)85%moderate
June Weather12°C (54°F)61 mm (2.4 inches)80%moderate
July Weather11°C (51°F)65 mm (2.6 inches)69%moderate
August Weather12°C (54°F)48 mm (1.9 inches)66%high
September Weather14°C (58°F)78 mm (3.1 inches)72%very high
October Weather17°C (62°F)92 mm (3.6 inches)63%very high
November Weather20°C (69°F)67 mm (2.6 inches)59%extreme
December Weather22°C (73°F)65 mm (2.6 inches)56%extreme

Compare Avellaneda's Climate with Cities Worldwide