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December Weather in Rio Bonito, Brazil

Last updated: August 22, 2025

The average temperature in Rio Bonito, Brazil during December hovers around 25°C (77°F). Expect minimum temperatures of 17°C (63°F) and peaks reaching 33°C (92°F). With an average precipitation of 222 mm (8.7 in) spread over 21 days, you might want to keep that umbrella handy. Additionally, the average humidity sits at a comfortable 75%, adding to the region's unique climate charm.

December Temperature in Rio Bonito

In December in Rio Bonito, the average temperature is 25°C (77°F), with maximums reaching 33°C (92°F) and minimums dropping to as low as 17°C (63°F). This pleasant climate makes it an ideal time for traveling and exploring the attractions of Rio Bonito.

December Weather in Rio Bonito: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Rio Bonito, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Rio Bonito, December typically has an average temperature of 25°C (77°F), with highs reaching up to 33°C (92°F) and lows dropping to around 17°C (63°F).
JanFebMarAprMayJunJulAugSepOctNovDec807979757271696973747477
Data source: Temperature data for Rio Bonito 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 Rio Bonito

In Rio Bonito in December, the precipitation amount is 222 mm (8.7 in) recorded over the course of 21 days.

December Precipitation Trends in Rio Bonito

The chart displays monthly precipitation patterns in Rio Bonito, 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 Rio Bonito, December typically receives around 222 mm (8.7 inches) of precipitation spread over approximately 21 days.
JanFebMarAprMayJunJulAugSepOctNovDec1592081991037546316866119211222
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Rio Bonito

In Rio Bonito in December humidity is 75%. With an average temperature of 25°C (77°F), this humidity feels like a warm blanket, enveloping you and making travel somewhat taxing, as every step can feel heavier and the air thicker, often leading to a desire for shade and cool breezes.

December Average Humidity in Rio Bonito

This chart illustrates the average monthly humidity levels in Rio Bonito, 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 Rio Bonito 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 Rio Bonito

In Rio Bonito 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 Rio Bonito.

Maximum UV Index Levels in Rio Bonito for December

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

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

This table compares monthly weather conditions in Rio Bonito, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather27°C (80°F)159 mm (6.2 inches)85%extreme
February Weather26°C (79°F)208 mm (8.2 inches)85%extreme
March Weather26°C (79°F)199 mm (7.8 inches)86%extreme
April Weather24°C (76°F)103 mm (4.0 inches)83%extreme
May Weather22°C (72°F)75 mm (3.0 inches)81%very high
June Weather22°C (71°F)46 mm (1.8 inches)80%high
July Weather20°C (69°F)31 mm (1.2 inches)76%high
August Weather21°C (69°F)68 mm (2.7 inches)73%very high
September Weather23°C (73°F)66 mm (2.6 inches)68%extreme
October Weather23°C (74°F)118 mm (4.7 inches)61%extreme
November Weather23°C (74°F)211 mm (8.3 inches)72%extreme
December Weather25°C (77°F)222 mm (8.7 inches)75%extreme

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