September Weather in Barro, Brazil

Last updated: August 22, 2025

In September, the average temperature in Barro, Brazil is a warm 29°C (85°F), with minimums dipping to 20°C (69°F) and peaks reaching up to 38°C (100°F). Rainfall is minimal, with just 1 mm (0.0 in) of precipitation spread over 0 days, while the average humidity sits comfortably at 59%. Enjoy the warmth!

September Temperature in Barro

In September in Barro, the average temperature is 29°C (85°F), with maximums potentially reaching 38°C (100°F) and minimums dropping to as low as 20°C (69°F). Be prepared for warm and sometimes hot weather, making it ideal for beach outings and outdoor activities.

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

The chart illustrates September temperature patterns in Barro, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Barro, September typically has an average temperature of 29°C (85°F), with highs reaching up to 38°C (100°F) and lows dropping to around 20°C (69°F).

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

September Precipitation in Barro

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

September Precipitation Trends in Barro

The chart displays monthly precipitation patterns in Barro, 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 Barro, 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 Barro

In Barro in September, humidity is 59%. With an average temperature of 29°C (85°F), this humidity feels like a warm embrace, making travel both invigorating and slightly sticky, requiring frequent breaks to cool off and stay refreshed.

September Average Humidity in Barro

This chart illustrates the average monthly humidity levels in Barro, 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 Barro is approximately 59%, 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 Barro

In Barro 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 Barro.

Maximum UV Index Levels in Barro for September

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

Data source: Barro 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 Barro Compares to Other Months

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

This table compares monthly weather conditions in Barro, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	29°C (84°F)	72 mm (2.8 inches)	88%	extreme
February Weather	28°C (82°F)	150 mm (5.9 inches)	91%	extreme
March Weather	27°C (81°F)	187 mm (7.3 inches)	92%	extreme
April Weather	27°C (80°F)	141 mm (5.6 inches)	92%	extreme
May Weather	27°C (80°F)	48 mm (1.9 inches)	89%	extreme
June Weather	27°C (81°F)	13 mm (0.5 inches)	80%	extreme
July Weather	27°C (80°F)	15 mm (0.6 inches)	70%	extreme
August Weather	28°C (83°F)	1 mm (0.0 inches)	65%	extreme
September Weather	29°C (85°F)	1 mm (0.0 inches)	59%	extreme
October Weather	31°C (87°F)	4 mm (0.1 inches)	53%	extreme
November Weather	31°C (88°F)	7 mm (0.3 inches)	49%	extreme
December Weather	30°C (86°F)	30 mm (1.2 inches)	59%	extreme