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September Weather in San Javier, Argentina

Last updated: August 22, 2025

In September, the average temperature in San Javier, Argentina is a pleasant 17°C (63°F). However, be prepared for a range, with minimum temperatures dipping to 3°C (37°F) and maximum highs reaching up to 35°C (96°F). This month brings an average precipitation of 82 mm (3.2 in) spread over 8 days, accompanied by a comfortable average humidity of 59%.

September Temperature in San Javier

In September in San Javier, the average temperature is 17°C (63°F), with maximums reaching up to 35°C (96°F) and minimums dropping as low as 3°C (37°F). Be sure to pack layers to prepare for the varying temperatures during your travels!

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

The chart illustrates September temperature patterns in San Javier, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In San Javier, September typically has an average temperature of 17°C (63°F), with highs reaching up to 35°C (96°F) and lows dropping to around 3°C (37°F).
JanFebMarAprMayJunJulAugSepOctNovDec797773686156555863687377
Data source: Temperature data for San Javier 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 Javier

In San Javier in September, the total precipitation amount reached 82 mm (3.2 in) over the course of 8 days.

September Precipitation Trends in San Javier

The chart displays monthly precipitation patterns in San Javier, 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 Javier, September typically receives around 82 mm (3.2 inches) of precipitation spread over approximately 8 days.
JanFebMarAprMayJunJulAugSepOctNovDec11410910684144784879821068476
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in San Javier

In San Javier in September, humidity is 59%. With an average temperature of 17°C (63°F), this humidity feels like a refreshing embrace, making it pleasant for traveling as long as you're prepared for occasional mugginess.

September Average Humidity in San Javier

This chart illustrates the average monthly humidity levels in San Javier, 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 Javier is approximately 59%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec51%57%65%76%83%78%58%54%59%50%53%57%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in San Javier

In San Javier 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 San Javier.

Maximum UV Index Levels in San Javier for September

The chart shows the monthly maximum UV Index (UVI) for San Javier 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 Javier typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec151312964579121415
Data source: San Javier 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 Javier Compares to Other Months

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

This table compares monthly weather conditions in San Javier, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather26°C (79°F)114 mm (4.5 inches)51%extreme
February Weather25°C (77°F)109 mm (4.3 inches)57%extreme
March Weather23°C (73°F)106 mm (4.2 inches)65%extreme
April Weather20°C (69°F)84 mm (3.3 inches)76%very high
May Weather16°C (61°F)144 mm (5.7 inches)83%high
June Weather13°C (56°F)77 mm (3.1 inches)78%moderate
July Weather13°C (55°F)48 mm (1.9 inches)58%moderate
August Weather14°C (58°F)79 mm (3.1 inches)54%high
September Weather17°C (63°F)82 mm (3.2 inches)59%very high
October Weather20°C (68°F)106 mm (4.2 inches)50%extreme
November Weather23°C (73°F)84 mm (3.3 inches)53%extreme
December Weather25°C (77°F)76 mm (3.0 inches)57%extreme

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