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September Weather in San Bernardo, Argentina

Last updated: August 22, 2025

In San Bernardo, Argentina, the average temperature in September hovers around 20°C (69°F), with a minimum dipping to 4°C (40°F) and a maximum soaring up to 43°C (109°F). Rainfall brings 62 mm (2.4 in) of precipitation over 7 days, while the air remains comfortably 45% humid.

September Temperature in San Bernardo

In September in San Bernardo, the average temperature is 20°C (69°F). Maximum temperatures can reach 43°C (109°F), while minimums can drop to as low as 4°C (40°F). This wide range of temperatures makes it essential to pack accordingly when traveling to San Bernardo during this time.

September Weather in San Bernardo: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in San Bernardo, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In San Bernardo, September typically has an average temperature of 20°C (69°F), with highs reaching up to 43°C (109°F) and lows dropping to around 4°C (40°F).
JanFebMarAprMayJunJulAugSepOctNovDec827976716460596369737781
Data source: Temperature data for San Bernardo 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 San Bernardo

In San Bernardo in September, the total precipitation amount is 62 mm (2.4 in) observed over a span of 7 days.

September Precipitation Trends in San Bernardo

The chart displays monthly precipitation patterns in San Bernardo, 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 San Bernardo, September typically receives around 62 mm (2.4 inches) of precipitation spread over approximately 7 days.
JanFebMarAprMayJunJulAugSepOctNovDec146891079278423136627912577
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in San Bernardo

In San Bernardo in September, humidity is 45%. With an average temperature of 20°C (69°F), this humidity feels like a pleasant embrace, making it comfortable for traveling and exploring the sights without feeling overly sticky or weighed down.

September Average Humidity in San Bernardo

This chart illustrates the average monthly humidity levels in San Bernardo, 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 San Bernardo is approximately 45%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec72%65%69%78%84%70%51%36%45%46%61%76%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in San Bernardo

In San Bernardo 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 San Bernardo.

Maximum UV Index Levels in San Bernardo for September

The chart shows the monthly maximum UV Index (UVI) for San Bernardo 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 San Bernardo typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec15141210756810131414
Data source: San Bernardo 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 San Bernardo Compares to Other Months

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

This table compares monthly weather conditions in San Bernardo, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather28°C (82°F)146 mm (5.7 inches)72%extreme
February Weather26°C (80°F)89 mm (3.5 inches)65%extreme
March Weather25°C (77°F)107 mm (4.2 inches)69%extreme
April Weather22°C (71°F)92 mm (3.6 inches)78%very high
May Weather18°C (64°F)78 mm (3.1 inches)84%high
June Weather16°C (60°F)42 mm (1.7 inches)70%moderate
July Weather15°C (59°F)31 mm (1.2 inches)51%high
August Weather17°C (63°F)36 mm (1.4 inches)36%very high
September Weather20°C (69°F)62 mm (2.4 inches)45%very high
October Weather23°C (73°F)79 mm (3.1 inches)46%extreme
November Weather25°C (77°F)125 mm (4.9 inches)61%extreme
December Weather27°C (81°F)77 mm (3.0 inches)76%extreme

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