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December Weather in Mari, Brazil

Last updated: August 22, 2025

In December, the average temperature in Mari, Brazil is a warm 27°C (81°F). You'll experience temperatures that can dip to a comfortable 21°C (70°F) and rise to a balmy 33°C (91°F). Expect some rain, with 43 mm (1.7 in) of precipitation spread over 17 days. The average humidity hovers around 70%, ensuring a tropical feel throughout the month.

December Temperature in Mari

In December in Mari, the average temperature is 27°C (81°F). Maximums can reach 33°C (91°F), and minimums can be as low as 21°C (70°F). This makes it a great time for travelers to enjoy warm weather while exploring the beauty of Mari.

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

The chart illustrates December temperature patterns in Mari, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Mari, December typically has an average temperature of 27°C (81°F), with highs reaching up to 33°C (91°F) and lows dropping to around 21°C (70°F).
JanFebMarAprMayJunJulAugSepOctNovDec818181807977757677798181
Data source: Temperature data for Mari 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 Mari

In Mari in December, the total precipitation amount is 43 mm (1.7 in) recorded over a span of 17 days.

December Precipitation Trends in Mari

The chart displays monthly precipitation patterns in Mari, 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 Mari, December typically receives around 43 mm (1.7 inches) of precipitation spread over approximately 17 days.
JanFebMarAprMayJunJulAugSepOctNovDec477911912812581863533272843
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Mari

In Mari 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 Mari

This chart illustrates the average monthly humidity levels in Mari, 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 Mari 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 Mari

In Mari 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 Mari, you can check here.

Maximum UV Index Levels in Mari for December

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

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

This table compares monthly weather conditions in Mari, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather27°C (81°F)47 mm (1.8 inches)86%extreme
February Weather27°C (81°F)79 mm (3.1 inches)89%extreme
March Weather27°C (81°F)119 mm (4.7 inches)89%extreme
April Weather27°C (80°F)128 mm (5.0 inches)89%extreme
May Weather26°C (79°F)125 mm (4.9 inches)90%extreme
June Weather25°C (77°F)81 mm (3.2 inches)86%extreme
July Weather24°C (76°F)86 mm (3.4 inches)80%extreme
August Weather24°C (76°F)35 mm (1.4 inches)77%extreme
September Weather25°C (78°F)33 mm (1.3 inches)72%extreme
October Weather26°C (80°F)27 mm (1.1 inches)68%extreme
November Weather27°C (81°F)28 mm (1.1 inches)66%extreme
December Weather27°C (81°F)43 mm (1.7 inches)70%extreme

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