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December Weather in Guapimirim, Brazil

Last updated: August 22, 2025

In December, the average temperature in Guapimirim, Brazil hovers around 23°C (74°F), making it a pleasant time to visit. However, temperatures can vary significantly, with a minimum of 14°C (58°F) and a maximum reaching 33°C (91°F). Be prepared for some rain, as the area receives an average of 309 mm (12.2 in) of precipitation over 25 days. The humidity is quite high, averaging at 75%, so be sure to stay hydrated!

December Temperature in Guapimirim

In December in Guapimirim, the average temperature is 23°C (74°F). Maximums can reach 33°C (91°F) and minimums can be as low as 14°C (58°F). This pleasant weather makes Guapimirim an ideal destination for travelers seeking mild climates and enjoyable outdoor activities.

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

The chart illustrates December temperature patterns in Guapimirim, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Guapimirim, December typically has an average temperature of 23°C (74°F), with highs reaching up to 33°C (91°F) and lows dropping to around 14°C (58°F).
JanFebMarAprMayJunJulAugSepOctNovDec777575716867646570727174
Data source: Temperature data for Guapimirim 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 Guapimirim

In Guapimirim in December, the total precipitation amount is 309 mm (12.2 in) over the course of 25 days.

December Precipitation Trends in Guapimirim

The chart displays monthly precipitation patterns in Guapimirim, 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 Guapimirim, December typically receives around 309 mm (12.2 inches) of precipitation spread over approximately 25 days.
JanFebMarAprMayJunJulAugSepOctNovDec2253112261067150377377156261309
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Guapimirim

In Guapimirim 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 Guapimirim

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

In Guapimirim 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 Guapimirim.

Maximum UV Index Levels in Guapimirim for December

The chart shows the monthly maximum UV Index (UVI) for Guapimirim 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 Guapimirim typically reaches 15, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec16151311867912131415
Data source: Guapimirim 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 Guapimirim Compares to Other Months

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

This table compares monthly weather conditions in Guapimirim, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather25°C (77°F)225 mm (8.9 inches)85%extreme
February Weather24°C (75°F)311 mm (12.2 inches)85%extreme
March Weather24°C (75°F)226 mm (8.9 inches)86%extreme
April Weather22°C (71°F)106 mm (4.2 inches)83%extreme
May Weather20°C (68°F)71 mm (2.8 inches)81%very high
June Weather19°C (67°F)50 mm (2.0 inches)80%high
July Weather18°C (65°F)37 mm (1.4 inches)76%high
August Weather18°C (65°F)73 mm (2.9 inches)73%very high
September Weather21°C (70°F)77 mm (3.0 inches)68%extreme
October Weather22°C (72°F)156 mm (6.1 inches)61%extreme
November Weather22°C (71°F)261 mm (10.3 inches)72%extreme
December Weather23°C (74°F)309 mm (12.2 inches)75%extreme

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