September Weather in Arauco, Argentina

Last updated: August 22, 2025

In September, the average temperature in Arauco, Argentina is a comfortable 18°C (64°F), with a minimum dipping to 2°C (35°F) and soaring to a maximum of 37°C (99°F). Expect 12 mm (0.5 in) of precipitation over 2 days, complemented by an average humidity of 51%. Stay prepared for a variety of weather conditions this month!

September Temperature in Arauco

In September, in Arauco, the average temperature is 18°C (64°F). Maximums can reach 37°C (99°F) and minimums can be as low as 2°C (35°F). This makes Arauco a versatile destination for travelers, offering a range of experiences from warm days to cooler nights.

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

The chart illustrates September temperature patterns in Arauco, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Arauco, September typically has an average temperature of 18°C (64°F), with highs reaching up to 37°C (99°F) and lows dropping to around 2°C (35°F).

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

September Precipitation in Arauco

In Arauco in September, the precipitation amount is 12 mm (0.5 in) over the course of 2 days.

September Precipitation Trends in Arauco

The chart displays monthly precipitation patterns in Arauco, 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 Arauco, September typically receives around 12 mm (0.5 inches) of precipitation spread over approximately 2 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 Arauco

In Arauco in September, humidity is 51%. With an average temperature of 18°C (64°F), this humidity feels like a refreshing breeze that makes outdoor activities enjoyable, perfect for exploring the sights without feeling overheated.

September Average Humidity in Arauco

This chart illustrates the average monthly humidity levels in Arauco, 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 Arauco is approximately 51%, 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 Arauco

In Arauco 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 Arauco.

Maximum UV Index Levels in Arauco for September

The chart shows the monthly maximum UV Index (UVI) for Arauco 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 Arauco typically reaches 10, which falls under the very high exposure category.

Data source: Arauco 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 Arauco Compares to Other Months

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

This table compares monthly weather conditions in Arauco, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	25°C (78°F)	55 mm (2.2 inches)	63%	extreme
February Weather	24°C (75°F)	63 mm (2.5 inches)	66%	extreme
March Weather	22°C (72°F)	42 mm (1.6 inches)	68%	extreme
April Weather	19°C (67°F)	26 mm (1.0 inches)	83%	very high
May Weather	15°C (60°F)	16 mm (0.6 inches)	82%	high
June Weather	12°C (54°F)	6 mm (0.2 inches)	72%	moderate
July Weather	12°C (54°F)	2 mm (0.1 inches)	57%	high
August Weather	15°C (59°F)	3 mm (0.1 inches)	42%	high
September Weather	18°C (64°F)	12 mm (0.5 inches)	51%	very high
October Weather	21°C (70°F)	15 mm (0.6 inches)	47%	extreme
November Weather	23°C (74°F)	25 mm (1.0 inches)	58%	extreme
December Weather	25°C (77°F)	36 mm (1.4 inches)	61%	extreme