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September Weather in Atalaia, Brazil

Last updated: August 22, 2025

In September, the average temperature in Atalaia, Brazil is a pleasant 24°C (75°F). Expect a minimum of 18°C (65°F) and a maximum of 32°C (89°F), perfect for outdoor activities. However, be prepared for some rain, as 71 mm (2.8 in) of precipitation is typical over 22 days. With an average humidity of 79%, it’s a good idea to stay hydrated and enjoy the vibrant atmosphere!

September Temperature in Atalaia

In September in Atalaia, the average temperature is 24°C (75°F). Maximums can reach 32°C (89°F) and minimums can be as low as 18°C (65°F). This pleasant climate makes it an ideal destination for outdoor activities and exploration.

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

The chart illustrates September temperature patterns in Atalaia, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Atalaia, September typically has an average temperature of 24°C (75°F), with highs reaching up to 32°C (89°F) and lows dropping to around 18°C (65°F).
JanFebMarAprMayJunJulAugSepOctNovDec808180797775747475777980
Data source: Temperature data for Atalaia 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 Atalaia

In Atalaia in September, the total precipitation amount is 71 mm (2.8 in), which falls over the course of 22 days.

September Precipitation Trends in Atalaia

The chart displays monthly precipitation patterns in Atalaia, 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 Atalaia, September typically receives around 71 mm (2.8 inches) of precipitation spread over approximately 22 days.
JanFebMarAprMayJunJulAugSepOctNovDec49531251261321321549771423846
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Atalaia

In Atalaia in September, humidity is 79%. With an average temperature of 24°C (75°F), this humidity feels like a warm, tropical embrace, making traveling quite sticky and requiring ample hydration and light clothing to keep comfortable while exploring.

September Average Humidity in Atalaia

This chart illustrates the average monthly humidity levels in Atalaia, 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 Atalaia is approximately 79%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec84%87%88%89%90%89%86%84%79%74%71%72%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Atalaia

In Atalaia 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 Atalaia.

Maximum UV Index Levels in Atalaia for September

The chart shows the monthly maximum UV Index (UVI) for Atalaia 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 Atalaia typically reaches 13, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec141414141210101213131514
Data source: Atalaia 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 Atalaia Compares to Other Months

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

This table compares monthly weather conditions in Atalaia, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather26°C (80°F)49 mm (1.9 inches)84%extreme
February Weather27°C (81°F)53 mm (2.1 inches)87%extreme
March Weather27°C (80°F)125 mm (4.9 inches)88%extreme
April Weather26°C (79°F)126 mm (5.0 inches)89%extreme
May Weather25°C (77°F)132 mm (5.2 inches)90%extreme
June Weather24°C (75°F)132 mm (5.2 inches)89%very high
July Weather23°C (74°F)154 mm (6.1 inches)86%very high
August Weather23°C (74°F)97 mm (3.8 inches)84%extreme
September Weather24°C (75°F)71 mm (2.8 inches)79%extreme
October Weather25°C (78°F)42 mm (1.6 inches)74%extreme
November Weather26°C (79°F)38 mm (1.5 inches)71%extreme
December Weather26°C (80°F)46 mm (1.8 inches)72%extreme

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