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September Weather in Barra Mansa, Brazil

Last updated: August 22, 2025

In Barra Mansa, Brazil, the average temperature in September is a pleasant 21°C (71°F). Expect a minimum of 11°C (51°F) and soaring maximums of 35°C (95°F). During this month, anticipate 53 mm (2.1 in) of precipitation, spread over approximately 8 days. With an average humidity of 68%, it’s a vibrant time to experience the local scenery!

September Temperature in Barra Mansa

In September in Barra Mansa, the average temperature is 21°C (71°F). The maximum can reach 35°C (95°F), while the minimum can drop to as low as 11°C (51°F). This makes Barra Mansa a great destination for travelers looking to enjoy mild weather with some warm days.

September Weather in Barra Mansa: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Barra Mansa, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Barra Mansa, September typically has an average temperature of 21°C (71°F), with highs reaching up to 35°C (95°F) and lows dropping to around 11°C (51°F).
JanFebMarAprMayJunJulAugSepOctNovDec767474716766646570727173
Data source: Temperature data for Barra Mansa generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Barra Mansa

In Barra Mansa in September, the total precipitation amount is 53 mm (2.1 in) over the course of 8 days.

September Precipitation Trends in Barra Mansa

The chart displays monthly precipitation patterns in Barra Mansa, 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 Barra Mansa, September typically receives around 53 mm (2.1 inches) of precipitation spread over approximately 8 days.
JanFebMarAprMayJunJulAugSepOctNovDec193209177765424224953112190261
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Barra Mansa

In Barra Mansa in September, humidity is 68%. With an average temperature of 21°C (71°F), this humidity feels like a warm embrace, making traveling a bit sticky but also inviting for leisurely strolls and outdoor adventures.

September Average Humidity in Barra Mansa

This chart illustrates the average monthly humidity levels in Barra Mansa, 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 Barra Mansa is approximately 68%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec85%85%86%83%81%80%76%73%68%61%72%75%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Barra Mansa

In Barra Mansa in September, the maximum UV index is 12, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, underscoring the importance of sun protection. For detailed information, you can check the Hourly UV Index in Barra Mansa.

Maximum UV Index Levels in Barra Mansa for September

The chart shows the monthly maximum UV Index (UVI) for Barra Mansa 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 Barra Mansa typically reaches 12, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec161613118781012131416
Data source: Barra Mansa 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 Barra Mansa Compares to Other Months

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

This table compares monthly weather conditions in Barra Mansa, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather24°C (76°F)193 mm (7.6 inches)85%extreme
February Weather24°C (75°F)208 mm (8.2 inches)85%extreme
March Weather24°C (75°F)177 mm (7.0 inches)86%extreme
April Weather22°C (71°F)76 mm (3.0 inches)83%extreme
May Weather19°C (67°F)54 mm (2.1 inches)81%very high
June Weather19°C (66°F)24 mm (0.9 inches)80%high
July Weather18°C (64°F)22 mm (0.9 inches)76%very high
August Weather18°C (65°F)49 mm (1.9 inches)73%very high
September Weather21°C (71°F)53 mm (2.1 inches)68%extreme
October Weather22°C (72°F)111 mm (4.4 inches)61%extreme
November Weather22°C (71°F)190 mm (7.5 inches)72%extreme
December Weather23°C (74°F)261 mm (10.3 inches)75%extreme

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