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September Weather in Castelli, Argentina

Last updated: August 22, 2025

In Castelli, Argentina, the average temperature in September is a pleasant 22°C (71°F). However, temperatures can vary widely, with a minimum of 5°C (41°F) and a maximum soaring to 43°C (110°F). The region experiences approximately 60 mm (2.4 in) of precipitation over 8 days, complemented by an average humidity of 45%.

September Temperature in Castelli

In September in Castelli, the average temperature is 22°C (71°F), with maximums reaching up to 43°C (110°F) and minimums dropping as low as 5°C (41°F). Be prepared for a wide range of temperatures when traveling to Castelli during this month.

September Weather in Castelli: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Castelli, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Castelli, September typically has an average temperature of 22°C (71°F), with highs reaching up to 43°C (110°F) and lows dropping to around 5°C (41°F).
JanFebMarAprMayJunJulAugSepOctNovDec838077726662616571757982
Data source: Temperature data for Castelli 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 Castelli

In Castelli in September, the total precipitation amount is 60 mm (2.4 in) spread over the course of 8 days.

September Precipitation Trends in Castelli

The chart displays monthly precipitation patterns in Castelli, 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 Castelli, September typically receives around 60 mm (2.4 inches) of precipitation spread over approximately 8 days.
JanFebMarAprMayJunJulAugSepOctNovDec12293957585322922609013458
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Castelli

In Castelli in September, humidity is 45%. With an average temperature of 22°C (71°F), this humidity feels like a comfortable and refreshing environment for traveling, allowing for pleasant outdoor activities without the discomfort of excessive moisture in the air.

September Average Humidity in Castelli

This chart illustrates the average monthly humidity levels in Castelli, 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 Castelli 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 Castelli

In Castelli 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 Castelli.

Maximum UV Index Levels in Castelli for September

The chart shows the monthly maximum UV Index (UVI) for Castelli 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 Castelli typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec14141310756810131415
Data source: Castelli 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 Castelli Compares to Other Months

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

This table compares monthly weather conditions in Castelli, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather28°C (83°F)122 mm (4.8 inches)72%extreme
February Weather27°C (81°F)93 mm (3.7 inches)65%extreme
March Weather25°C (78°F)95 mm (3.7 inches)69%extreme
April Weather22°C (73°F)75 mm (3.0 inches)78%very high
May Weather19°C (66°F)85 mm (3.3 inches)84%high
June Weather17°C (62°F)32 mm (1.3 inches)70%moderate
July Weather16°C (61°F)29 mm (1.1 inches)51%high
August Weather18°C (66°F)22 mm (0.8 inches)36%very high
September Weather22°C (71°F)60 mm (2.4 inches)45%very high
October Weather24°C (75°F)90 mm (3.5 inches)46%extreme
November Weather26°C (79°F)134 mm (5.3 inches)61%extreme
December Weather28°C (82°F)58 mm (2.3 inches)76%extreme

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