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September Weather in El Alto, Argentina

Last updated: August 22, 2025

In El Alto, Argentina, the average temperature in September hovers around 18°C (65°F). Expect a minimum of 1°C (34°F) and a maximum soaring up to 36°C (98°F). During this month, you'll see an average precipitation of 16 mm (0.6 in) over the course of 3 days, accompanied by a comfortable average humidity level of 51%. Enjoy the pleasant weather!

September Temperature in El Alto

In September in El Alto, the average temperature is 18°C (65°F), with maximums reaching up to 36°C (98°F) and minimums dropping as low as 1°C (34°F). This wide temperature range makes it essential for travelers to pack accordingly, ensuring they're prepared for both warm days and cooler nights.

September Weather in El Alto: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in El Alto, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In El Alto, September typically has an average temperature of 18°C (65°F), with highs reaching up to 36°C (98°F) and lows dropping to around 1°C (34°F).
JanFebMarAprMayJunJulAugSepOctNovDec797572676054535865707477
Data source: Temperature data for El Alto 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 El Alto

In El Alto in September, the precipitation amount is 16 mm (0.6 in), spread over a duration of 3 days.

September Precipitation Trends in El Alto

The chart displays monthly precipitation patterns in El Alto, 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 El Alto, September typically receives around 16 mm (0.6 inches) of precipitation spread over approximately 3 days.
JanFebMarAprMayJunJulAugSepOctNovDec839596883895216427580
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in El Alto

In El Alto in September, humidity is 51%. With an average temperature of 18°C (65°F), this humidity feels like a mild embrace, making it quite pleasant for traveling, allowing for comfortable exploration without the overwhelming heat or stickiness often found in more humid climates.

September Average Humidity in El Alto

This chart illustrates the average monthly humidity levels in El Alto, 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 El Alto is approximately 51%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec63%66%68%83%82%72%57%42%51%47%58%62%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in El Alto

In El Alto 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 El Alto.

Maximum UV Index Levels in El Alto for September

The chart shows the monthly maximum UV Index (UVI) for El Alto 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 El Alto typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec15141310755710131515
Data source: El Alto 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 El Alto Compares to Other Months

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

This table compares monthly weather conditions in El Alto, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather26°C (79°F)83 mm (3.3 inches)63%extreme
February Weather24°C (76°F)95 mm (3.7 inches)66%extreme
March Weather22°C (72°F)96 mm (3.8 inches)68%extreme
April Weather20°C (68°F)88 mm (3.5 inches)83%very high
May Weather15°C (60°F)38 mm (1.5 inches)82%high
June Weather12°C (54°F)9 mm (0.4 inches)72%moderate
July Weather12°C (53°F)4 mm (0.2 inches)57%moderate
August Weather15°C (59°F)2 mm (0.1 inches)42%high
September Weather18°C (65°F)16 mm (0.6 inches)51%very high
October Weather21°C (70°F)42 mm (1.7 inches)47%extreme
November Weather24°C (75°F)75 mm (2.9 inches)58%extreme
December Weather25°C (77°F)80 mm (3.2 inches)61%extreme

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