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September Weather in Imperatriz, Brazil

Last updated: August 22, 2025

In September, the average temperature in Imperatriz, Brazil reaches a warm 29°C (85°F). Expect temperatures to range from a comfortable 19°C (66°F) at night to a sizzling 38°C (101°F) during the day. With a modest precipitation of only 9 mm (0.3 in) spread over 1 day, the humidity stays around 45%, making it a pleasant time to enjoy the outdoors!

September Temperature in Imperatriz

In September, in Imperatriz, the average temperature is 29°C (85°F), with maximums reaching up to 38°C (101°F) and minimums dropping as low as 19°C (66°F). This makes for warm and pleasant weather, perfect for outdoor adventures and exploration.

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

The chart illustrates September temperature patterns in Imperatriz, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Imperatriz, September typically has an average temperature of 29°C (85°F), with highs reaching up to 38°C (101°F) and lows dropping to around 19°C (66°F).
JanFebMarAprMayJunJulAugSepOctNovDec808080808181818384848281
Data source: Temperature data for Imperatriz 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 Imperatriz

In Imperatriz in September, the precipitation amount is 9 mm (0.3 in) over the course of 1 day.

September Precipitation Trends in Imperatriz

The chart displays monthly precipitation patterns in Imperatriz, 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 Imperatriz, September typically receives around 9 mm (0.3 inches) of precipitation spread over approximately 1 days.
JanFebMarAprMayJunJulAugSepOctNovDec16622720314852552927121136
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Imperatriz

In Imperatriz in September, humidity is 45%. With an average temperature of 29°C (85°F), this humidity feels like a warm and comfortable climate for traveling, allowing for enjoyable outdoor activities without feeling excessively sticky or overwhelming.

September Average Humidity in Imperatriz

This chart illustrates the average monthly humidity levels in Imperatriz, 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 Imperatriz is approximately 45%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec91%88%87%93%89%78%64%51%45%48%52%81%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Imperatriz

In Imperatriz 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 Imperatriz.

Maximum UV Index Levels in Imperatriz for September

The chart shows the monthly maximum UV Index (UVI) for Imperatriz 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 Imperatriz typically reaches 13, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec151515151311111213131414
Data source: Imperatriz 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 Imperatriz Compares to Other Months

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

This table compares monthly weather conditions in Imperatriz, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather26°C (80°F)165 mm (6.5 inches)91%extreme
February Weather26°C (80°F)227 mm (8.9 inches)88%extreme
March Weather26°C (80°F)202 mm (8.0 inches)87%extreme
April Weather27°C (81°F)148 mm (5.8 inches)93%extreme
May Weather27°C (81°F)52 mm (2.1 inches)89%extreme
June Weather27°C (81°F)5 mm (0.2 inches)78%extreme
July Weather27°C (81°F)5 mm (0.2 inches)64%extreme
August Weather28°C (83°F)2 mm (0.1 inches)51%extreme
September Weather29°C (85°F)9 mm (0.3 inches)45%extreme
October Weather29°C (84°F)27 mm (1.1 inches)48%extreme
November Weather28°C (82°F)121 mm (4.8 inches)52%extreme
December Weather27°C (81°F)136 mm (5.3 inches)81%extreme

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