September Weather in Las Heras, Argentina

Last updated: August 22, 2025

In Las Heras, Argentina, the average temperature in September hovers around 9°C (48°F). During this month, expect a minimum chill of -4°C (25°F) and a pleasant maximum of 25°C (77°F). Rainfall is moderate, with an average precipitation amount of 16 mm (0.6 in) over 4 days. The atmosphere can feel quite damp, with an average humidity level of 77%.

September Temperature in Las Heras

In September in Las Heras, the average temperature is 9°C (48°F). The maximum can reach 25°C (77°F) and the minimum can be as low as -4°C (25°F). This diverse range of temperatures suggests a need for layered clothing and flexibility in your travel plans.

September Weather in Las Heras: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Las Heras, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Las Heras, September typically has an average temperature of 9°C (48°F), with highs reaching up to 25°C (77°F) and lows dropping to around -4°C (25°F).

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

September Precipitation in Las Heras

In Las Heras in September, the precipitation amount is 16 mm (0.6 in) over a span of 4 days.

September Precipitation Trends in Las Heras

The chart displays monthly precipitation patterns in Las Heras, 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 Las Heras, September typically receives around 16 mm (0.6 inches) of precipitation spread over approximately 4 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 Las Heras

In Las Heras in September, humidity is 77%. With an average temperature of 9°C (48°F), this humidity feels like a damp embrace, making traveling a bit more challenging as the cool air combines with the moisture, often leaving you with a chill that seeps into your bones.

September Average Humidity in Las Heras

This chart illustrates the average monthly humidity levels in Las Heras, 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 Las Heras is approximately 77%, 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 Las Heras

In Las Heras in September, the maximum UV index is 6, which corresponds to a high Exposure Category. The time to burn is approximately 25 minutes. To find the hourly UV index in Las Heras, you can refer to this Hourly UV Index in Las Heras.

Maximum UV Index Levels in Las Heras for September

The chart shows the monthly maximum UV Index (UVI) for Las Heras 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 Las Heras typically reaches 6, which falls under the high exposure category.

Data source: Las Heras 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 Las Heras Compares to Other Months

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

This table compares monthly weather conditions in Las Heras, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	18°C (65°F)	6 mm (0.2 inches)	63%	extreme
February Weather	19°C (66°F)	15 mm (0.6 inches)	67%	extreme
March Weather	15°C (60°F)	32 mm (1.3 inches)	69%	very high
April Weather	12°C (53°F)	28 mm (1.1 inches)	76%	moderate
May Weather	8°C (46°F)	24 mm (0.9 inches)	81%	moderate
June Weather	4°C (39°F)	29 mm (1.2 inches)	85%	low
July Weather	4°C (39°F)	20 mm (0.8 inches)	86%	low
August Weather	6°C (44°F)	22 mm (0.9 inches)	85%	moderate
September Weather	9°C (48°F)	16 mm (0.6 inches)	77%	high
October Weather	12°C (53°F)	11 mm (0.4 inches)	71%	very high
November Weather	16°C (60°F)	11 mm (0.4 inches)	65%	extreme
December Weather	18°C (65°F)	14 mm (0.6 inches)	63%	extreme