September Weather in Palmas, Brazil

Last updated: August 22, 2025

In September, the average temperature in Palmas, Brazil is a warm 29°C (85°F). You can expect a comfortable minimum of 17°C (64°F), while the heat can peak at a sweltering 39°C (102°F). With a modest precipitation amount of just 10 mm (0.4 in) over 1 day, the average humidity sits at a pleasant 35%, making it an ideal time for outdoor activities!

September Temperature in Palmas

In September in Palmas, the average temperature is 29°C (85°F), with maximums reaching up to 39°C (102°F) and minimums dropping as low as 17°C (64°F). This makes it an ideal time for travelers who enjoy warm weather, but it's wise to stay hydrated and protect yourself from the sun.

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

The chart illustrates September temperature patterns in Palmas, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Palmas, September typically has an average temperature of 29°C (85°F), with highs reaching up to 39°C (102°F) and lows dropping to around 17°C (64°F).

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

September Precipitation in Palmas

In Palmas in September, the precipitation amount is 10 mm (0.4 in) over the course of 1 day.

September Precipitation Trends in Palmas

The chart displays monthly precipitation patterns in Palmas, 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 Palmas, September typically receives around 10 mm (0.4 inches) of precipitation spread over approximately 1 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 Palmas

In Palmas in September, humidity is 35%. With an average temperature of 29°C (85°F), this humidity feels like a comfortable warmth that is easy to enjoy while traveling, allowing you to explore without feeling overly sticky or weighed down by the heat.

September Average Humidity in Palmas

This chart illustrates the average monthly humidity levels in Palmas, 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 Palmas is approximately 35%, 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 Palmas

In Palmas in September, the maximum UV index reaches 13, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's crucial to take protective measures. For detailed information, you can check the Hourly UV Index in Palmas.

Maximum UV Index Levels in Palmas for September

The chart shows the monthly maximum UV Index (UVI) for Palmas 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 Palmas typically reaches 13, which falls under the extreme exposure category.

Data source: Palmas 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 Palmas Compares to Other Months

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

This table compares monthly weather conditions in Palmas, 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 (78°F)	270 mm (10.6 inches)	88%	extreme
February Weather	25°C (78°F)	409 mm (16.1 inches)	89%	extreme
March Weather	26°C (79°F)	318 mm (12.5 inches)	91%	extreme
April Weather	26°C (80°F)	197 mm (7.8 inches)	88%	extreme
May Weather	27°C (80°F)	25 mm (1.0 inches)	75%	extreme
June Weather	26°C (79°F)	1 mm (0.0 inches)	62%	very high
July Weather	26°C (79°F)	1 mm (0.1 inches)	54%	very high
August Weather	28°C (82°F)	1 mm (0.0 inches)	44%	extreme
September Weather	29°C (85°F)	10 mm (0.4 inches)	35%	extreme
October Weather	28°C (83°F)	108 mm (4.3 inches)	28%	extreme
November Weather	26°C (80°F)	281 mm (11.1 inches)	45%	extreme
December Weather	26°C (79°F)	307 mm (12.1 inches)	71%	extreme