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December Weather in Montanhas, Brazil

Last updated: August 22, 2025

In December, the average temperature in Montanhas, Brazil is a pleasant 27°C (81°F). Expect the minimum to drop to 21°C (70°F), while the maximum can reach up to 32°C (90°F). You'll encounter around 41 mm (1.6 in) of precipitation spread over 17 days, contributing to an average humidity of 70%.

December Temperature in Montanhas

In December in Montanhas, the average temperature is 27°C (81°F), with maximums reaching 32°C (90°F) and minimums dropping as low as 21°C (70°F). This pleasant climate makes it an ideal time for travelers to explore and enjoy outdoor activities.

December Weather in Montanhas: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Montanhas, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Montanhas, December typically has an average temperature of 27°C (81°F), with highs reaching up to 32°C (90°F) and lows dropping to around 21°C (70°F).
JanFebMarAprMayJunJulAugSepOctNovDec808180797877757677798080
Data source: Temperature data for Montanhas 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 Montanhas

In Montanhas in December, the total precipitation amount is 41 mm (1.6 in), which occurs over a span of 17 days.

December Precipitation Trends in Montanhas

The chart displays monthly precipitation patterns in Montanhas, 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 Montanhas, December typically receives around 41 mm (1.6 inches) of precipitation spread over approximately 17 days.
JanFebMarAprMayJunJulAugSepOctNovDec4895137124115931143533272741
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Montanhas

In Montanhas in December humidity is 70%. With an average temperature of 27°C (81°F), this humidity feels like a warm embrace that clings to the skin, making it essential to stay hydrated and plan for plenty of shade while exploring the vibrant sights and sounds.

December Average Humidity in Montanhas

This chart illustrates the average monthly humidity levels in Montanhas, 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 Montanhas is approximately 70%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec86%89%90%89%90%86%80%77%72%68%66%70%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Montanhas

In Montanhas in December, the maximum UV index is 14, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, so it's crucial to take precautions. For the detailed hourly UV index in Montanhas, you can check here.

Maximum UV Index Levels in Montanhas for December

The chart shows the monthly maximum UV Index (UVI) for Montanhas 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 Montanhas typically reaches 14, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec141415141211111213131414
Data source: Montanhas 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 Montanhas Compares to Other Months

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

This table compares monthly weather conditions in Montanhas, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather27°C (81°F)48 mm (1.9 inches)86%extreme
February Weather27°C (81°F)95 mm (3.7 inches)89%extreme
March Weather27°C (80°F)136 mm (5.4 inches)89%extreme
April Weather26°C (80°F)124 mm (4.9 inches)89%extreme
May Weather26°C (78°F)115 mm (4.5 inches)90%extreme
June Weather25°C (77°F)93 mm (3.7 inches)86%extreme
July Weather24°C (76°F)114 mm (4.5 inches)80%extreme
August Weather24°C (76°F)35 mm (1.4 inches)77%extreme
September Weather25°C (77°F)33 mm (1.3 inches)72%extreme
October Weather26°C (79°F)27 mm (1.1 inches)68%extreme
November Weather27°C (80°F)27 mm (1.0 inches)66%extreme
December Weather27°C (81°F)41 mm (1.6 inches)70%extreme

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