September Weather in Alterosa, Brazil

Last updated: August 22, 2025

In September, the average temperature in Alterosa, Brazil is a pleasant 22°C (72°F). Expect a minimum of 9°C (49°F) and a maximum of 35°C (96°F), offering a comfortable range for various activities. During this month, the area experiences about 39 mm (1.5 in) of precipitation over 4 days, with an average humidity level of 49%. Enjoy the balanced climate that allows for both outdoor adventures and cozy indoor retreats!

September Temperature in Alterosa

In September in Alterosa, the average temperature is 22°C (72°F). Maximums can reach 35°C (96°F) and minimums can be as low as 9°C (49°F). This makes Alterosa a great destination for travelers who enjoy warm weather with comfortable evenings.

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

The chart illustrates September temperature patterns in Alterosa, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Alterosa, September typically has an average temperature of 22°C (72°F), with highs reaching up to 35°C (96°F) and lows dropping to around 9°C (49°F).

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

September Precipitation in Alterosa

In Alterosa in September, the precipitation amount is 39 mm (1.5 in) spread over a period of 4 days.

September Precipitation Trends in Alterosa

The chart displays monthly precipitation patterns in Alterosa, 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 Alterosa, September typically receives around 39 mm (1.5 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 Alterosa

In Alterosa in September, humidity is 49%. With an average temperature of 22°C (72°F), this humidity feels like a comfortable, refreshing embrace, making it ideal for exploring the sights and enjoying outdoor activities without feeling overheated.

September Average Humidity in Alterosa

This chart illustrates the average monthly humidity levels in Alterosa, 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 Alterosa is approximately 49%, 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 Alterosa

In Alterosa 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 Alterosa.

Maximum UV Index Levels in Alterosa for September

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

Data source: Alterosa 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 Alterosa Compares to Other Months

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

This table compares monthly weather conditions in Alterosa, 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)	212 mm (8.4 inches)	85%	extreme
February Weather	23°C (74°F)	248 mm (9.8 inches)	87%	extreme
March Weather	23°C (74°F)	172 mm (6.8 inches)	87%	extreme
April Weather	21°C (70°F)	61 mm (2.4 inches)	80%	extreme
May Weather	19°C (66°F)	47 mm (1.8 inches)	74%	very high
June Weather	18°C (65°F)	19 mm (0.7 inches)	72%	high
July Weather	17°C (62°F)	7 mm (0.3 inches)	67%	very high
August Weather	19°C (66°F)	25 mm (1.0 inches)	58%	very high
September Weather	22°C (72°F)	39 mm (1.5 inches)	49%	extreme
October Weather	23°C (73°F)	153 mm (6.0 inches)	36%	extreme
November Weather	22°C (72°F)	205 mm (8.1 inches)	65%	extreme
December Weather	23°C (73°F)	270 mm (10.6 inches)	72%	extreme