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September Weather in Mariana, Brazil

Last updated: August 22, 2025

In September, the average temperature in Mariana, Brazil is a pleasant 20°C (68°F). Expect a comfortable range, with minimums dipping to 9°C (48°F) and maximums soaring to 33°C (92°F). Alongside this warm climate, 55 mm (2.1 in) of precipitation is typical, often spread over about 7 days. Humidity levels hover around 63%, making it a lovely time to experience all that Mariana has to offer!

September Temperature in Mariana

In September in Mariana, the average temperature is 20°C (68°F). Maximum can reach 33°C (92°F) and minimum can be as low as 9°C (48°F). This pleasant climate makes Mariana an ideal destination for travelers seeking a comfortable and enjoyable experience.

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

The chart illustrates September temperature patterns in Mariana, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Mariana, September typically has an average temperature of 20°C (68°F), with highs reaching up to 33°C (92°F) and lows dropping to around 9°C (48°F).
JanFebMarAprMayJunJulAugSepOctNovDec727171686463616268696970
Data source: Temperature data for Mariana 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 Mariana

In Mariana in September, the total precipitation amount reaches 55 mm (2.1 in) over the course of 7 days.

September Precipitation Trends in Mariana

The chart displays monthly precipitation patterns in Mariana, 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 Mariana, September typically receives around 55 mm (2.1 inches) of precipitation spread over approximately 7 days.
JanFebMarAprMayJunJulAugSepOctNovDec19328119080531573555192256277
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Mariana

In Mariana in September humidity is 63%. With an average temperature of 20°C (68°F), this humidity feels like a warm, refreshing embrace, making travel comfortable and inviting, as long as you stay hydrated and take occasional breaks in the shade.

September Average Humidity in Mariana

This chart illustrates the average monthly humidity levels in Mariana, 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 Mariana is approximately 63%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec83%85%88%86%82%82%77%72%63%48%61%68%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Mariana

In Mariana 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 Mariana.

Maximum UV Index Levels in Mariana for September

The chart shows the monthly maximum UV Index (UVI) for Mariana 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 Mariana typically reaches 12, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec171514129781112141416
Data source: Mariana 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 Mariana Compares to Other Months

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

This table compares monthly weather conditions in Mariana, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather22°C (72°F)193 mm (7.6 inches)83%extreme
February Weather22°C (71°F)281 mm (11.1 inches)85%extreme
March Weather22°C (71°F)190 mm (7.5 inches)87%extreme
April Weather20°C (68°F)80 mm (3.1 inches)86%extreme
May Weather18°C (64°F)53 mm (2.1 inches)82%very high
June Weather17°C (63°F)15 mm (0.6 inches)82%high
July Weather16°C (61°F)7 mm (0.3 inches)77%very high
August Weather17°C (62°F)35 mm (1.4 inches)72%extreme
September Weather20°C (68°F)55 mm (2.1 inches)63%extreme
October Weather21°C (69°F)192 mm (7.6 inches)48%extreme
November Weather20°C (69°F)256 mm (10.1 inches)61%extreme
December Weather21°C (71°F)277 mm (10.9 inches)68%extreme

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