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September Weather in Barro Alto, Brazil

Last updated: August 22, 2025

In Barro Alto, Brazil, the average temperature in September is a pleasant 23°C (73°F). Expect a range that can dip to a minimum of 14°C (57°F) and soar to a maximum of 38°C (100°F). Rainfall is minimal, with an average precipitation of just 5 mm (0.2 in) over 0 days. Overall, the climate enjoys a comfortable average humidity of 63%, making it an ideal time to explore!

September Temperature in Barro Alto

In September in Barro Alto, the average temperature is 23°C (73°F). Maximums can reach 38°C (100°F), while minimums can drop to as low as 14°C (57°F). This makes Barro Alto a great destination for travelers seeking warm weather and a comfortable climate during this time of year.

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

The chart illustrates September temperature patterns in Barro Alto, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Barro Alto, September typically has an average temperature of 23°C (73°F), with highs reaching up to 38°C (100°F) and lows dropping to around 14°C (57°F).
JanFebMarAprMayJunJulAugSepOctNovDec767676757371697073777676
Data source: Temperature data for Barro Alto 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 Barro Alto

In Barro Alto in September, the precipitation amount is 5 mm (0.2 in) during a span of 0 days.

September Precipitation Trends in Barro Alto

The chart displays monthly precipitation patterns in Barro Alto, 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 Alto, September typically receives around 5 mm (0.2 inches) of precipitation spread over approximately 0 days.
JanFebMarAprMayJunJulAugSepOctNovDec39537542956552410494
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Barro Alto

In Barro Alto in September humidity is 63%. With an average temperature of 23°C (73°F), this humidity feels like a warm embrace, making outdoor excursions enjoyable yet slightly sticky, so travelers should dress lightly and stay hydrated to fully appreciate the sights.

September Average Humidity in Barro Alto

This chart illustrates the average monthly humidity levels in Barro Alto, 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 Alto is approximately 63%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec76%85%90%89%84%81%75%70%63%57%50%54%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Barro Alto

In Barro Alto 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 Alto.

Maximum UV Index Levels in Barro Alto for September

The chart shows the monthly maximum UV Index (UVI) for Barro Alto 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 Alto typically reaches 13, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec151515141210111313151515
Data source: Barro Alto 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 Alto Compares to Other Months

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

This table compares monthly weather conditions in Barro Alto, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather25°C (76°F)39 mm (1.5 inches)76%extreme
February Weather25°C (77°F)53 mm (2.1 inches)85%extreme
March Weather25°C (77°F)75 mm (2.9 inches)90%extreme
April Weather24°C (75°F)41 mm (1.6 inches)89%extreme
May Weather23°C (73°F)9 mm (0.3 inches)84%extreme
June Weather21°C (71°F)5 mm (0.2 inches)81%very high
July Weather20°C (69°F)6 mm (0.2 inches)75%extreme
August Weather21°C (70°F)5 mm (0.2 inches)70%extreme
September Weather23°C (73°F)5 mm (0.2 inches)63%extreme
October Weather25°C (77°F)24 mm (0.9 inches)57%extreme
November Weather24°C (76°F)104 mm (4.1 inches)50%extreme
December Weather24°C (76°F)94 mm (3.7 inches)54%extreme

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