September Weather in Castelli, Argentina

Last updated: August 22, 2025

In September, the average temperature in Castelli, Argentina hovers around 13°C (56°F). Expect a minimum of 0°C (33°F) and a maximum of 27°C (81°F), making it a month of notable contrasts. Throughout the month, precipitation is around 74 mm (2.9 in) across 7 days, contributing to an average humidity of 76%. Stay prepared for a mix of chilly and mild days!

September Temperature in Castelli

In September in Castelli, the average temperature is 13°C (56°F). Maximum temperatures can reach 27°C (81°F), while minimums can drop as low as 0°C (33°F). It's a great time to visit for those who enjoy mild weather with a chance of warmer days.

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 13°C (56°F), with highs reaching up to 27°C (81°F) and lows dropping to around 0°C (33°F).

Data source: Temperature data for Castelli generated using information from the Copernicus Climate Change Service.

September Precipitation in Castelli

In Castelli in September, the precipitation amount is 74 mm (2.9 in) over a period of 7 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 74 mm (2.9 inches) of precipitation spread over approximately 7 days.

Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

September Humidity in Castelli

In Castelli in September humidity is 76%. With an average temperature of 13°C (56°F), this humidity feels like a damp blanket enveloping you, making travel a bit uncomfortable as you navigate through the heavy, moisture-laden 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 76%, offering insight into how humid the weather typically is during this month.

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 is 7, which corresponds to the high Exposure Category. This means that the time to burn is approximately 25 minutes. 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 7, which falls under the high exposure category.

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.
	Temperature	Precipitation	Humidity	UV
January Weather	23°C (74°F)	60 mm (2.4 inches)	59%	extreme
February Weather	22°C (72°F)	65 mm (2.6 inches)	70%	extreme
March Weather	20°C (68°F)	89 mm (3.5 inches)	72%	extreme
April Weather	17°C (64°F)	89 mm (3.5 inches)	82%	high
May Weather	13°C (56°F)	51 mm (2.0 inches)	86%	moderate
June Weather	11°C (51°F)	63 mm (2.5 inches)	81%	moderate
July Weather	10°C (49°F)	60 mm (2.4 inches)	73%	moderate
August Weather	11°C (52°F)	47 mm (1.9 inches)	69%	moderate
September Weather	13°C (56°F)	74 mm (2.9 inches)	76%	high
October Weather	15°C (60°F)	61 mm (2.4 inches)	69%	very high
November Weather	19°C (66°F)	65 mm (2.6 inches)	66%	extreme
December Weather	21°C (70°F)	90 mm (3.6 inches)	61%	extreme