September Weather in Barreiras, Brazil

Last updated: August 22, 2025

In September, the average temperature in Barreiras, Brazil is a warm 27°C (81°F), with a pleasing range that can dip to 14°C (58°F) at its lowest and rise to a steamy 39°C (102°F) at its highest. Expect minimal rainfall with just 1 mm (0.0 in) over 0 days, contributing to an average humidity of 37%. Enjoy the sun and warmth of this vibrant destination!

September Temperature in Barreiras

In September in Barreiras, the average temperature is 27°C (81°F). Maximum temperatures can reach as high as 39°C (102°F), while minimums can drop to a chilly 14°C (58°F). Be sure to pack for both warm days and cooler evenings during your travels!

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

The chart illustrates September temperature patterns in Barreiras, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Barreiras, September typically has an average temperature of 27°C (81°F), with highs reaching up to 39°C (102°F) and lows dropping to around 14°C (58°F).

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

September Precipitation in Barreiras

In Barreiras in September, the precipitation amount is 1 mm (0.0 in) during a span of 0 days.

September Precipitation Trends in Barreiras

The chart displays monthly precipitation patterns in Barreiras, 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 Barreiras, September typically receives around 1 mm (0.0 inches) of precipitation spread over approximately 0 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 Barreiras

In Barreiras in September, humidity is 37%. With an average temperature of 27°C (81°F), this humidity feels like a comfortable embrace for traveling, allowing for enjoyable outdoor exploration without the heaviness often associated with higher humidity levels.

September Average Humidity in Barreiras

This chart illustrates the average monthly humidity levels in Barreiras, 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 Barreiras is approximately 37%, 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 Barreiras

In Barreiras 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 Barreiras.

Maximum UV Index Levels in Barreiras for September

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

Data source: Barreiras 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 Barreiras Compares to Other Months

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

This table compares monthly weather conditions in Barreiras, 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 (79°F)	91 mm (3.6 inches)	84%	extreme
February Weather	25°C (77°F)	193 mm (7.6 inches)	89%	extreme
March Weather	25°C (77°F)	175 mm (6.9 inches)	91%	extreme
April Weather	25°C (77°F)	85 mm (3.3 inches)	84%	extreme
May Weather	25°C (77°F)	12 mm (0.5 inches)	67%	extreme
June Weather	24°C (75°F)	1 mm (0.0 inches)	54%	very high
July Weather	23°C (74°F)	1 mm (0.0 inches)	48%	very high
August Weather	25°C (77°F)	2 mm (0.1 inches)	44%	extreme
September Weather	27°C (81°F)	1 mm (0.0 inches)	37%	extreme
October Weather	28°C (83°F)	42 mm (1.6 inches)	29%	extreme
November Weather	26°C (79°F)	158 mm (6.2 inches)	35%	extreme
December Weather	25°C (78°F)	196 mm (7.7 inches)	56%	extreme