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December Weather in Cachoeiras de Macacu, Brazil

Last updated: August 22, 2025

In Cachoeiras de Macacu, Brazil, the average temperature in December hovers around 23°C (74°F), making it a pleasant time to visit. Temperatures can range from a cool 12°C (54°F) to a warm 32°C (90°F), offering a diverse climate experience. Expect about 345 mm (13.6 in) of precipitation over 26 days, which contributes to the average humidity of 75%. Plan your activities accordingly to fully enjoy this vibrant destination!

December Temperature in Cachoeiras de Macacu

In December in Cachoeiras de Macacu, the average temperature is 23°C (74°F). Maximums can reach 32°C (90°F), while minimums can drop as low as 12°C (54°F). This mild climate makes Cachoeiras de Macacu an ideal destination for travelers seeking pleasant weather and a comfortable outdoor experience.

December Weather in Cachoeiras de Macacu: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Cachoeiras de Macacu, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Cachoeiras de Macacu, December typically has an average temperature of 23°C (74°F), with highs reaching up to 32°C (90°F) and lows dropping to around 12°C (54°F).
JanFebMarAprMayJunJulAugSepOctNovDec767474706766646469717073
Data source: Temperature data for Cachoeiras de Macacu 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 Cachoeiras de Macacu

In Cachoeiras de Macacu in December, the precipitation amount reaches 345 mm (13.6 in) over the course of 26 days.

December Precipitation Trends in Cachoeiras de Macacu

The chart displays monthly precipitation patterns in Cachoeiras de Macacu, 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 Cachoeiras de Macacu, December typically receives around 345 mm (13.6 inches) of precipitation spread over approximately 26 days.
JanFebMarAprMayJunJulAugSepOctNovDec2553342471247650347383165290345
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Cachoeiras de Macacu

In Cachoeiras de Macacu in December, humidity is 75%. With an average temperature of 23°C (74°F), this humidity feels like a warm, heavy blanket wrapping around you, making it feel more sweltering than it actually is, which can be quite uncomfortable for traveling.

December Average Humidity in Cachoeiras de Macacu

This chart illustrates the average monthly humidity levels in Cachoeiras de Macacu, 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 Cachoeiras de Macacu is approximately 75%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec85%85%86%83%81%80%76%73%68%61%72%75%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Cachoeiras de Macacu

In Cachoeiras de Macacu 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 Cachoeiras de Macacu.

Maximum UV Index Levels in Cachoeiras de Macacu for December

The chart shows the monthly maximum UV Index (UVI) for Cachoeiras de Macacu 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 Cachoeiras de Macacu typically reaches 16, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec16151411867912131416
Data source: Cachoeiras de Macacu 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 Cachoeiras de Macacu Compares to Other Months

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

This table compares monthly weather conditions in Cachoeiras de Macacu, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather24°C (76°F)255 mm (10.1 inches)85%extreme
February Weather24°C (75°F)334 mm (13.2 inches)85%extreme
March Weather23°C (74°F)247 mm (9.7 inches)86%extreme
April Weather21°C (71°F)124 mm (4.9 inches)83%extreme
May Weather19°C (67°F)76 mm (3.0 inches)81%very high
June Weather19°C (66°F)50 mm (2.0 inches)80%high
July Weather18°C (64°F)34 mm (1.3 inches)76%high
August Weather18°C (65°F)73 mm (2.9 inches)73%very high
September Weather21°C (70°F)83 mm (3.3 inches)68%extreme
October Weather22°C (71°F)164 mm (6.5 inches)61%extreme
November Weather21°C (71°F)290 mm (11.4 inches)72%extreme
December Weather23°C (74°F)345 mm (13.6 inches)75%extreme

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