September Weather in Formosa, Argentina

Last updated: August 22, 2025

In Formosa, Argentina, the average temperature for September hovers around 21°C (71°F). Expect it to range from a brisk minimum of 8°C (47°F) to a scorching maximum of 41°C (105°F). During this month, you can anticipate about 87 mm (3.4 in) of precipitation spread over 7 days, with an average humidity level of 50%. Enjoy the variety that September brings!

September Temperature in Formosa

In September in Formosa, the average temperature is 21°C (71°F), with maximums reaching up to 41°C (105°F) and minimums dipping as low as 8°C (47°F). Be prepared for a wide range of temperatures when traveling to Formosa in September.

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

The chart illustrates September temperature patterns in Formosa, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Formosa, September typically has an average temperature of 21°C (71°F), with highs reaching up to 41°C (105°F) and lows dropping to around 8°C (47°F).

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

September Precipitation in Formosa

In Formosa in September, the precipitation amount is 87 mm (3.4 in) over a span of 7 days.

September Precipitation Trends in Formosa

The chart displays monthly precipitation patterns in Formosa, 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 Formosa, September typically receives around 87 mm (3.4 inches) of precipitation spread over approximately 7 days.

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

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

September Humidity in Formosa

In Formosa in September humidity is 50%. With an average temperature of 21°C (71°F), this humidity feels like a pleasant embrace, making it comfortable for exploring the sights and indulging in outdoor activities without feeling overheated or sticky.

September Average Humidity in Formosa

This chart illustrates the average monthly humidity levels in Formosa, 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 Formosa is approximately 50%, 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 Formosa

In Formosa 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 Formosa.

Maximum UV Index Levels in Formosa for September

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

Data source: Formosa 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 Formosa Compares to Other Months

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

This table compares monthly weather conditions in Formosa, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	28°C (83°F)	132 mm (5.2 inches)	76%	extreme
February Weather	27°C (81°F)	69 mm (2.7 inches)	70%	extreme
March Weather	26°C (78°F)	106 mm (4.2 inches)	73%	extreme
April Weather	23°C (73°F)	121 mm (4.8 inches)	83%	very high
May Weather	19°C (67°F)	171 mm (6.7 inches)	85%	high
June Weather	18°C (64°F)	73 mm (2.9 inches)	73%	moderate
July Weather	17°C (62°F)	63 mm (2.5 inches)	63%	high
August Weather	19°C (66°F)	50 mm (2.0 inches)	44%	very high
September Weather	21°C (71°F)	87 mm (3.4 inches)	50%	very high
October Weather	24°C (75°F)	155 mm (6.1 inches)	53%	extreme
November Weather	25°C (78°F)	175 mm (6.9 inches)	66%	extreme
December Weather	27°C (81°F)	82 mm (3.2 inches)	82%	extreme