September Weather in Promissao, Brazil

Last updated: August 22, 2025

In September, the average temperature in Promissao, Brazil hovers around 26°C (79°F). Temperatures can fluctuate significantly, with a minimum of 12°C (55°F) and peaks reaching up to 40°C (104°F). Expect some light rain, with 20 mm (0.8 in) of precipitation over 2 days. The atmosphere tends to be relatively dry, boasting an average humidity of 41%. Enjoy the warm climate!

September Temperature in Promissao

In September in Promissao, the average temperature is 26°C (79°F). Maximum temperatures can reach 40°C (104°F), while minimum temperatures can drop as low as 12°C (55°F). This climate offers great flexibility for travelers, allowing for both warm outdoor activities and cooler evenings.

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

The chart illustrates September temperature patterns in Promissao, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Promissao, September typically has an average temperature of 26°C (79°F), with highs reaching up to 40°C (104°F) and lows dropping to around 12°C (55°F).

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

September Precipitation in Promissao

In Promissao in September, the precipitation amount is 20 mm (0.8 in) over the course of 2 days.

September Precipitation Trends in Promissao

The chart displays monthly precipitation patterns in Promissao, 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 Promissao, September typically receives around 20 mm (0.8 inches) of precipitation spread over approximately 2 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 Promissao

In Promissao in September humidity is 41%. With an average temperature of 26°C (79°F), this humidity feels like a comfortable embrace, making it ideal for exploring the sights and enjoying outdoor activities without feeling overly sticky or overheated.

September Average Humidity in Promissao

This chart illustrates the average monthly humidity levels in Promissao, 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 Promissao is approximately 41%, 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 Promissao

In Promissao 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 Promissao.

Maximum UV Index Levels in Promissao for September

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

Data source: Promissao 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 Promissao Compares to Other Months

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

This table compares monthly weather conditions in Promissao, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	26°C (80°F)	162 mm (6.4 inches)	85%	extreme
February Weather	26°C (80°F)	130 mm (5.1 inches)	87%	extreme
March Weather	26°C (80°F)	82 mm (3.2 inches)	86%	extreme
April Weather	25°C (77°F)	43 mm (1.7 inches)	79%	extreme
May Weather	22°C (72°F)	40 mm (1.6 inches)	68%	very high
June Weather	22°C (71°F)	13 mm (0.5 inches)	60%	high
July Weather	21°C (70°F)	8 mm (0.3 inches)	57%	very high
August Weather	22°C (72°F)	26 mm (1.0 inches)	48%	very high
September Weather	26°C (79°F)	20 mm (0.8 inches)	41%	extreme
October Weather	26°C (79°F)	95 mm (3.7 inches)	35%	extreme
November Weather	26°C (79°F)	133 mm (5.2 inches)	65%	extreme
December Weather	26°C (79°F)	132 mm (5.2 inches)	80%	extreme