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September Weather in Buenos Aires, Panama

Last updated: August 27, 2025

In Buenos Aires, Panama, the average temperature in September hovers around 22°C (72°F). Expect a minimum of 18°C (64°F) and a pleasant maximum of 28°C (83°F) during this time. Be prepared for considerable precipitation, averaging 322 mm (12.7 in) over 30 days, and don't forget to stay hydrated, as the average humidity reaches a notable 87%.

September Temperature in Buenos Aires

In September in Buenos Aires, the average temperature is 22°C (72°F), with maximums reaching up to 28°C (83°F) and minimums dipping as low as 18°C (64°F). This pleasant climate makes it an ideal destination for travelers seeking comfortable weather and outdoor activities.

September Weather in Buenos Aires: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Buenos Aires, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Buenos Aires, September typically has an average temperature of 22°C (72°F), with highs reaching up to 28°C (83°F) and lows dropping to around 18°C (64°F).
JanFebMarAprMayJunJulAugSepOctNovDec696970717272717171717070
Data source: Temperature data for Buenos Aires 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 Buenos Aires

In Buenos Aires in September, the precipitation amount is 322 mm (12.7 in) over the course of 30 days.

September Precipitation Trends in Buenos Aires

The chart displays monthly precipitation patterns in Buenos Aires, 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 Buenos Aires, September typically receives around 322 mm (12.7 inches) of precipitation spread over approximately 30 days.
JanFebMarAprMayJunJulAugSepOctNovDec1167982203382313306292322411355175
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Buenos Aires

In Buenos Aires in September humidity is 87%. With an average temperature of 22°C (72°F), this humidity feels like a warm blanket wrapping around you, making every step while traveling feel slightly heavier and more tedious, yet still refreshing in the shade.

September Average Humidity in Buenos Aires

This chart illustrates the average monthly humidity levels in Buenos Aires, 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 Buenos Aires is approximately 87%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec72%71%69%70%73%90%89%87%87%86%86%79%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Buenos Aires

In Buenos Aires in September, the maximum UV index is 14, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, so it's crucial to take precautions. For the detailed hourly UV index in Buenos Aires, you can check here.

Maximum UV Index Levels in Buenos Aires for September

The chart shows the monthly maximum UV Index (UVI) for Buenos Aires 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 Buenos Aires typically reaches 14, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec121314151514141314141211
Data source: Buenos Aires 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 Buenos Aires Compares to Other Months

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

This table compares monthly weather conditions in Buenos Aires, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather21°C (69°F)116 mm (4.6 inches)72%extreme
February Weather21°C (70°F)79 mm (3.1 inches)71%extreme
March Weather21°C (70°F)82 mm (3.2 inches)69%extreme
April Weather22°C (72°F)203 mm (8.0 inches)70%extreme
May Weather22°C (72°F)382 mm (15.0 inches)73%extreme
June Weather22°C (72°F)313 mm (12.3 inches)90%extreme
July Weather22°C (72°F)306 mm (12.1 inches)88%extreme
August Weather22°C (72°F)292 mm (11.5 inches)87%extreme
September Weather22°C (72°F)322 mm (12.7 inches)87%extreme
October Weather22°C (71°F)411 mm (16.2 inches)86%extreme
November Weather21°C (71°F)355 mm (14.0 inches)86%extreme
December Weather21°C (70°F)175 mm (6.9 inches)79%extreme

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