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December Weather in Macae, Brazil

Last updated: August 22, 2025

In December, the average temperature in Macae, Brazil reaches a comfortable 25°C (77°F). Expect temperatures to range from a minimum of 20°C (69°F) to a maximum of 30°C (87°F). However, be prepared for occasional rain, with an average precipitation of 154 mm (6.1 in) over 15 days. Don't forget to stay hydrated, as the average humidity is a tropical 81%!

December Temperature in Macae

In December in Macae, the average temperature is 25°C (77°F). Maximums can reach 30°C (87°F), and minimums can be as low as 20°C (69°F). This pleasant and moderate climate makes it an ideal destination for outdoor activities and exploration.

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

The chart illustrates December temperature patterns in Macae, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Macae, December typically has an average temperature of 25°C (77°F), with highs reaching up to 30°C (87°F) and lows dropping to around 20°C (69°F).
JanFebMarAprMayJunJulAugSepOctNovDec797879767473717072747477
Data source: Temperature data for Macae 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 Macae

In Macae in December, the precipitation amount is 154 mm (6.1 in) over the course of 15 days.

December Precipitation Trends in Macae

The chart displays monthly precipitation patterns in Macae, 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 Macae, December typically receives around 154 mm (6.1 inches) of precipitation spread over approximately 15 days.
JanFebMarAprMayJunJulAugSepOctNovDec71121132607437235055103187154
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Macae

In Macae in December, humidity is 81%. With an average temperature of 25°C (77°F), this humidity feels like walking through a warm, thick blanket, making traveling quite challenging as you may feel sticky and sluggish, requiring frequent breaks to stay refreshed and hydrated.

December Average Humidity in Macae

This chart illustrates the average monthly humidity levels in Macae, 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 Macae is approximately 81%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec85%86%84%82%80%78%77%75%76%74%79%81%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Macae

In Macae in December, the maximum UV index reaches an alarming 15, which falls into the extreme Exposure Category. With a time to burn of just 10 minutes, it's crucial to take precautions. For detailed information, you can check the Hourly UV Index in Macae.

Maximum UV Index Levels in Macae for December

The chart shows the monthly maximum UV Index (UVI) for Macae 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 Macae typically reaches 15, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec16141311867911131415
Data source: Macae 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 Macae Compares to Other Months

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

This table compares monthly weather conditions in Macae, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather26°C (79°F)71 mm (2.8 inches)85%extreme
February Weather26°C (78°F)121 mm (4.8 inches)86%extreme
March Weather26°C (79°F)132 mm (5.2 inches)84%extreme
April Weather25°C (77°F)60 mm (2.4 inches)82%extreme
May Weather23°C (74°F)74 mm (2.9 inches)80%very high
June Weather23°C (73°F)37 mm (1.5 inches)78%high
July Weather21°C (71°F)23 mm (0.9 inches)77%high
August Weather21°C (71°F)50 mm (2.0 inches)75%very high
September Weather22°C (73°F)55 mm (2.2 inches)75%extreme
October Weather23°C (74°F)102 mm (4.0 inches)74%extreme
November Weather23°C (74°F)187 mm (7.4 inches)79%extreme
December Weather25°C (77°F)154 mm (6.1 inches)81%extreme

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