September Weather in Rosario de Lerma, Argentina

Last updated: August 22, 2025

In Rosario de Lerma, Argentina, the average temperature in September hovers around 15°C (59°F). Expect a minimum of 1°C (34°F) and a maximum of 33°C (92°F). During this month, you can anticipate about 28 mm (1.1 in) of precipitation spread over 7 days, with an average humidity of 57%. Enjoy your stay!

September Temperature in Rosario de Lerma

In September in Rosario de Lerma, the average temperature is 15°C (59°F). Maximums can reach 33°C (92°F), and minimums can be as low as 1°C (34°F). This diverse range of temperatures makes it essential for travelers to pack layers to accommodate both warm days and chilly nights.

September Weather in Rosario de Lerma: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Rosario de Lerma, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Rosario de Lerma, September typically has an average temperature of 15°C (59°F), with highs reaching up to 33°C (92°F) and lows dropping to around 1°C (34°F).

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

September Precipitation in Rosario de Lerma

In Rosario de Lerma in September, the precipitation amount is 28 mm (1.1 in) over a period of 7 days.

September Precipitation Trends in Rosario de Lerma

The chart displays monthly precipitation patterns in Rosario de Lerma, 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 Rosario de Lerma, September typically receives around 28 mm (1.1 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 Rosario de Lerma

In Rosario de Lerma in September, humidity is 57%. With an average temperature of 15°C (59°F), this humidity feels like a refreshing embrace, making it comfortable for traveling while adding a light dampness that keeps the air feeling vibrant and alive.

September Average Humidity in Rosario de Lerma

This chart illustrates the average monthly humidity levels in Rosario de Lerma, 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 Rosario de Lerma is approximately 57%, 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 Rosario de Lerma

In Rosario de Lerma in September, the maximum UV index is 12, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, underscoring the importance of sun protection. For detailed information, you can check the Hourly UV Index in Rosario de Lerma.

Maximum UV Index Levels in Rosario de Lerma for September

The chart shows the monthly maximum UV Index (UVI) for Rosario de Lerma 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 Rosario de Lerma typically reaches 12, which falls under the extreme exposure category.

Data source: Rosario de Lerma 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 Rosario de Lerma Compares to Other Months

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

This table compares monthly weather conditions in Rosario de Lerma, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	20°C (69°F)	167 mm (6.6 inches)	84%	extreme
February Weather	19°C (67°F)	189 mm (7.4 inches)	87%	extreme
March Weather	18°C (64°F)	171 mm (6.7 inches)	88%	extreme
April Weather	16°C (61°F)	143 mm (5.6 inches)	85%	extreme
May Weather	13°C (55°F)	71 mm (2.8 inches)	74%	very high
June Weather	10°C (50°F)	31 mm (1.2 inches)	56%	high
July Weather	10°C (50°F)	26 mm (1.0 inches)	47%	very high
August Weather	12°C (53°F)	18 mm (0.7 inches)	44%	very high
September Weather	15°C (59°F)	28 mm (1.1 inches)	57%	extreme
October Weather	18°C (64°F)	76 mm (3.0 inches)	55%	extreme
November Weather	19°C (66°F)	112 mm (4.4 inches)	70%	extreme
December Weather	20°C (68°F)	156 mm (6.2 inches)	77%	extreme