September Weather in Sao Caetano do Sul, Brazil

Last updated: August 22, 2025

In September, the average temperature in Sao Caetano do Sul, Brazil is 20°C (68°F), making it a pleasant time to visit. Expect a minimum of 9°C (48°F) and a maximum of 34°C (94°F), providing a wide range of warmth. During this month, you can anticipate 47 mm (1.9 in) of precipitation spread over 6 days, with an average humidity of 58%. Perfect for exploring the outdoors!

September Temperature in Sao Caetano do Sul

In September in Sao Caetano do Sul, the average temperature is 20°C (68°F). Maximums can reach 34°C (94°F), while minimums can drop as low as 9°C (48°F). This pleasant climate makes it an ideal time for travelers to explore and enjoy outdoor activities.

September Weather in Sao Caetano do Sul: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Sao Caetano do Sul, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Sao Caetano do Sul, September typically has an average temperature of 20°C (68°F), with highs reaching up to 34°C (94°F) and lows dropping to around 9°C (48°F).

Data source: Temperature data for Sao Caetano do Sul generated using information from the Copernicus Climate Change Service.

September Precipitation in Sao Caetano do Sul

In Sao Caetano do Sul in September, the precipitation amount is 47 mm (1.9 in) over the course of 6 days.

September Precipitation Trends in Sao Caetano do Sul

The chart displays monthly precipitation patterns in Sao Caetano do Sul, 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 Sao Caetano do Sul, September typically receives around 47 mm (1.9 inches) of precipitation spread over approximately 6 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 Sao Caetano do Sul

In Sao Caetano do Sul in September humidity is 58%. With an average temperature of 20°C (68°F), this humidity feels like a refreshing embrace, creating a comfortable atmosphere for exploring the local sights and enjoying leisurely walks outdoors.

September Average Humidity in Sao Caetano do Sul

This chart illustrates the average monthly humidity levels in Sao Caetano do Sul, 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 Sao Caetano do Sul is approximately 58%, 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 Sao Caetano do Sul

In Sao Caetano do Sul in September, the maximum UV index reaches 11, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's essential to take precautions. For more details, you can check the Hourly UV Index in Sao Caetano do Sul.

Maximum UV Index Levels in Sao Caetano do Sul for September

The chart shows the monthly maximum UV Index (UVI) for Sao Caetano do Sul 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 Sao Caetano do Sul typically reaches 11, which falls under the extreme exposure category.

Data source: Sao Caetano do Sul 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 Sao Caetano do Sul Compares to Other Months

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

This table compares monthly weather conditions in Sao Caetano do Sul, 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)	192 mm (7.6 inches)	88%	extreme
February Weather	22°C (73°F)	166 mm (6.5 inches)	88%	extreme
March Weather	22°C (73°F)	147 mm (5.8 inches)	87%	extreme
April Weather	20°C (69°F)	58 mm (2.3 inches)	84%	extreme
May Weather	18°C (65°F)	56 mm (2.2 inches)	79%	very high
June Weather	18°C (64°F)	48 mm (1.9 inches)	77%	high
July Weather	16°C (62°F)	29 mm (1.1 inches)	72%	high
August Weather	17°C (63°F)	64 mm (2.5 inches)	65%	very high
September Weather	20°C (68°F)	47 mm (1.9 inches)	58%	extreme
October Weather	20°C (69°F)	135 mm (5.3 inches)	50%	extreme
November Weather	20°C (69°F)	126 mm (5.0 inches)	75%	extreme
December Weather	22°C (72°F)	150 mm (5.9 inches)	80%	extreme