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December Weather in Barro Alto, Brazil

Last updated: August 22, 2025

In December, the average temperature in Barro Alto, Brazil is a pleasant 25°C (77°F), with lows dipping to 18°C (65°F) and highs reaching up to 35°C (95°F). Expect about 250 mm (9.9 in) of precipitation spread over 21 days, contributing to an average humidity of 70%. Whether you're planning outdoor activities or enjoying the vibrant local culture, this climate offers a dynamic experience!

December Temperature in Barro Alto

In December in Barro Alto, the average temperature is 25°C (77°F). The maximum can reach 35°C (95°F), while the minimum can be as low as 18°C (65°F). This pleasant climate makes Barro Alto an ideal destination for travelers seeking warm weather and outdoor adventures.

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

The chart illustrates December 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, December typically has an average temperature of 25°C (77°F), with highs reaching up to 35°C (95°F) and lows dropping to around 18°C (65°F).
JanFebMarAprMayJunJulAugSepOctNovDec777677777674737882817777
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.

December Precipitation in Barro Alto

In Barro Alto in December, the precipitation amount is 250 mm (9.9 in) spread over 21 days.

December Precipitation Trends in Barro Alto

The chart displays monthly precipitation patterns in Barro Alto, with values for each month alongside December’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how December’s conditions compare to those of other months. In Barro Alto, December typically receives around 250 mm (9.9 inches) of precipitation spread over approximately 21 days.
JanFebMarAprMayJunJulAugSepOctNovDec142254164829101593199250
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Barro Alto

In Barro Alto in December, humidity is 70%. With an average temperature of 25°C (77°F), this humidity feels like walking through a warm, moist blanket that clings to your skin, making every step feel heavier as you explore the sights and sounds of your destination.

December Average Humidity in Barro Alto

This chart illustrates the average monthly humidity levels in Barro Alto, with December’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In December, average humidity in Barro Alto is approximately 70%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec86%90%90%82%65%59%53%44%34%26%50%70%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Barro Alto

In Barro Alto in December, the maximum UV index is 16, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, making it crucial to take protective measures. For detailed information, you can refer to the Hourly UV Index in Barro Alto.

Maximum UV Index Levels in Barro Alto for December

The chart shows the monthly maximum UV Index (UVI) for Barro Alto in December, 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 December, the maximum UV index in Barro Alto typically reaches 16, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec16151413119101213151516
Data source: Barro Alto December 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 December 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 December’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 December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather25°C (78°F)142 mm (5.6 inches)86%extreme
February Weather24°C (76°F)254 mm (10.0 inches)89%extreme
March Weather25°C (77°F)164 mm (6.5 inches)90%extreme
April Weather25°C (77°F)82 mm (3.2 inches)82%extreme
May Weather24°C (76°F)9 mm (0.4 inches)65%extreme
June Weather23°C (74°F)1 mm (0.0 inches)59%very high
July Weather23°C (73°F)0 mm (0.0 inches)53%very high
August Weather25°C (78°F)1 mm (0.1 inches)44%extreme
September Weather28°C (82°F)5 mm (0.2 inches)34%extreme
October Weather27°C (82°F)93 mm (3.7 inches)26%extreme
November Weather25°C (77°F)199 mm (7.8 inches)50%extreme
December Weather25°C (77°F)250 mm (9.9 inches)70%extreme

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