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September Weather in San Javier, Chile

Last updated: August 22, 2025

In September, the average temperature in San Javier, Chile hovers around 11°C (52°F), with a range that can dip as low as 0°C (32°F) and peak at a comfortable 26°C (79°F). Expect 55 mm (2.1 in) of precipitation spread across approximately 4 days, making for a moderately wet month. The average humidity sits at 62%, adding a gentle touch to the overall atmosphere.

September Temperature in San Javier

In September in San Javier, the average temperature is 11°C (52°F). Maximum temperatures can reach 26°C (79°F), while minimums can drop as low as 0°C (32°F). It's advisable to pack layers to accommodate both warm days and cooler nights when traveling.

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 11°C (52°F), with highs reaching up to 26°C (79°F) and lows dropping to around 0°C (32°F).
JanFebMarAprMayJunJulAugSepOctNovDec706964585248474952566368
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 precipitation amount is 55 mm (2.1 in) over the course of 4 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 55 mm (2.1 inches) of precipitation spread over approximately 4 days.
JanFebMarAprMayJunJulAugSepOctNovDec14893294200851065534162
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 62%. With an average temperature of 11°C (52°F), this humidity feels like a cool, damp embrace that might make walking around a bit uncomfortable, but the crisp air can still be refreshing for exploring the sights if you dress warmly.

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 62%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec40%41%46%54%70%78%82%79%62%64%53%39%
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 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 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 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec141311753458101314
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 Weather21°C (70°F)14 mm (0.6 inches)40%extreme
February Weather20°C (69°F)8 mm (0.3 inches)41%extreme
March Weather18°C (65°F)9 mm (0.3 inches)46%extreme
April Weather14°C (58°F)32 mm (1.2 inches)54%high
May Weather11°C (52°F)94 mm (3.7 inches)70%moderate
June Weather9°C (49°F)200 mm (7.9 inches)78%moderate
July Weather8°C (48°F)85 mm (3.4 inches)82%moderate
August Weather9°C (49°F)106 mm (4.2 inches)79%moderate
September Weather11°C (52°F)55 mm (2.1 inches)62%very high
October Weather13°C (56°F)34 mm (1.3 inches)64%very high
November Weather17°C (63°F)16 mm (0.6 inches)53%extreme
December Weather20°C (68°F)2 mm (0.1 inches)39%extreme

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