September Weather in Tres Barras, Brazil

Last updated: August 22, 2025

In September, the average temperature in Tres Barras, Brazil is a pleasant 18°C (65°F). Expect a minimum of 4°C (40°F) and a maximum of 33°C (91°F), showcasing a wide range of weather possibilities. Be prepared for 71 mm (2.8 in) of precipitation spread over 8 days, contributing to an average humidity of 75%.

September Temperature in Tres Barras

In September, in Tres Barras, the average temperature is 18°C (65°F). Maximum temperatures can reach 33°C (91°F), while minimums can drop as low as 4°C (40°F). This variation makes Tres Barras an ideal destination, offering pleasant days for outdoor activities and cooler evenings for cozy relaxation.

September Weather in Tres Barras: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Tres Barras, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Tres Barras, September typically has an average temperature of 18°C (65°F), with highs reaching up to 33°C (91°F) and lows dropping to around 4°C (40°F).

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

September Precipitation in Tres Barras

In Tres Barras in September, the precipitation amount is 71 mm (2.8 in) over the course of 8 days.

September Precipitation Trends in Tres Barras

The chart displays monthly precipitation patterns in Tres Barras, 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 Tres Barras, September typically receives around 71 mm (2.8 inches) of precipitation spread over approximately 8 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 Tres Barras

In Tres Barras in September, humidity is 75%. With an average temperature of 18°C (65°F), this humidity feels like a warm, enveloping blanket that can make outdoor exploration feel a bit stifling, potentially leading to discomfort during travel activities.

September Average Humidity in Tres Barras

This chart illustrates the average monthly humidity levels in Tres Barras, 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 Tres Barras is approximately 75%, 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 Tres Barras

In Tres Barras 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 Tres Barras.

Maximum UV Index Levels in Tres Barras for September

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

Data source: Tres Barras 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 Tres Barras Compares to Other Months

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

This table compares monthly weather conditions in Tres Barras, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	22°C (72°F)	163 mm (6.4 inches)	85%	extreme
February Weather	21°C (71°F)	131 mm (5.2 inches)	81%	extreme
March Weather	21°C (70°F)	117 mm (4.6 inches)	82%	extreme
April Weather	18°C (65°F)	52 mm (2.1 inches)	84%	extreme
May Weather	16°C (61°F)	106 mm (4.2 inches)	86%	high
June Weather	15°C (59°F)	123 mm (4.8 inches)	84%	high
July Weather	14°C (57°F)	27 mm (1.1 inches)	77%	high
August Weather	15°C (59°F)	87 mm (3.4 inches)	70%	very high
September Weather	18°C (65°F)	71 mm (2.8 inches)	75%	extreme
October Weather	19°C (66°F)	157 mm (6.2 inches)	76%	extreme
November Weather	20°C (68°F)	116 mm (4.6 inches)	84%	extreme
December Weather	21°C (71°F)	149 mm (5.9 inches)	88%	extreme