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August Weather in Rio Branco, Brazil

Last updated: August 22, 2025

In August, the average temperature in Rio Branco, Brazil reaches a pleasant 26°C (79°F). However, temperatures can vary significantly, with a minimum of 12°C (53°F) and a maximum soaring to 37°C (99°F). Expect some rain, as the area receives about 26 mm (1.0 in) of precipitation over 5 days. With an average humidity of 37%, the climate is generally comfortable for outdoor activities.

August Temperature in Rio Branco

In August in Rio Branco, the average temperature is 26°C (79°F). Maximum temperatures can reach 37°C (99°F), while minimums can drop to 12°C (53°F). Travelers should be prepared for warm days and cooler nights, making it a great time to explore outdoor activities.

August Weather in Rio Branco: Daily Temperature Highs, Lows, and Averages

The chart illustrates August temperature patterns in Rio Branco, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Rio Branco, August typically has an average temperature of 26°C (79°F), with highs reaching up to 37°C (99°F) and lows dropping to around 12°C (53°F).
JanFebMarAprMayJunJulAugSepOctNovDec787878787776767881807979
Data source: Temperature data for Rio Branco 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.

August Precipitation in Rio Branco

In Rio Branco in August, the precipitation amount is 26 mm (1.0 in) over the course of 5 days.

August Precipitation Trends in Rio Branco

The chart displays monthly precipitation patterns in Rio Branco, with values for each month alongside August’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how August’s conditions compare to those of other months. In Rio Branco, August typically receives around 26 mm (1.0 inches) of precipitation spread over approximately 5 days.
JanFebMarAprMayJunJulAugSepOctNovDec2642852881688333142653125207305
Data source: Precipitation data for August generated using information from the Copernicus Climate Change Service.
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August Humidity in Rio Branco

In Rio Branco in August, humidity is 37%. With an average temperature of 26°C (79°F), this humidity feels like a comfortable and pleasant environment for traveling, allowing you to explore without feeling overly sticky or fatigued.

August Average Humidity in Rio Branco

This chart illustrates the average monthly humidity levels in Rio Branco, with August’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In August, average humidity in Rio Branco is approximately 37%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec88%87%87%89%84%67%46%37%33%44%73%88%
Data source: Humidity data for August generated using information from the Copernicus Climate Change Service.

August UV Index in Rio Branco

In Rio Branco in August, the maximum UV index reaches 11, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's essential to take precautions. For more details, you can check the Hourly UV Index in Rio Branco.

Maximum UV Index Levels in Rio Branco for August

The chart shows the monthly maximum UV Index (UVI) for Rio Branco in August, 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 August, the maximum UV index in Rio Branco typically reaches 11, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec151616141210101112141514
Data source: Rio Branco August 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 August Weather in Rio Branco Compares to Other Months

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

This table compares monthly weather conditions in Rio Branco, showing how August’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather26°C (79°F)264 mm (10.4 inches)88%extreme
February Weather25°C (78°F)285 mm (11.2 inches)87%extreme
March Weather26°C (78°F)288 mm (11.3 inches)87%extreme
April Weather26°C (78°F)168 mm (6.6 inches)89%extreme
May Weather25°C (77°F)83 mm (3.3 inches)84%extreme
June Weather24°C (76°F)33 mm (1.3 inches)67%very high
July Weather25°C (76°F)14 mm (0.6 inches)46%very high
August Weather26°C (79°F)26 mm (1.0 inches)37%extreme
September Weather27°C (82°F)53 mm (2.1 inches)33%extreme
October Weather27°C (81°F)125 mm (4.9 inches)44%extreme
November Weather26°C (80°F)206 mm (8.1 inches)73%extreme
December Weather26°C (79°F)305 mm (12.0 inches)88%extreme

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