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December Weather in Rio Real, Brazil

Last updated: August 22, 2025

In December, the average temperature in Rio Real, Brazil is a warm 27°C (80°F), with minimums dipping to 20°C (67°F) and maximums soaring to 36°C (97°F). This month sees approximately 49 mm (1.9 in) of precipitation over about 11 days, while the average humidity rests at a comfortable 61%.

December Temperature in Rio Real

In December in Rio Real, the average temperature is 27°C (80°F). Maximum temperatures can reach 36°C (97°F), while minimums can drop to as low as 20°C (67°F). It's a great time to visit for warm weather and comfortable evenings.

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

The chart illustrates December temperature patterns in Rio Real, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Rio Real, December typically has an average temperature of 27°C (80°F), with highs reaching up to 36°C (97°F) and lows dropping to around 20°C (67°F).
JanFebMarAprMayJunJulAugSepOctNovDec818281807775737475787980
Data source: Temperature data for Rio Real 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 Real

In Rio Real in December, the total precipitation amount is 49 mm (1.9 in) spread over 11 days.

December Precipitation Trends in Rio Real

The chart displays monthly precipitation patterns in Rio Real, 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 Real, December typically receives around 49 mm (1.9 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec313068859181654550345549
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Rio Real

In Rio Real in December, humidity is 61%. With an average temperature of 27°C (80°F), this humidity feels like a warm embrace, making travel feel slightly sultry but manageable, adding a touch of heaviness to the air that invites you to explore the local culture at a leisurely pace.

December Average Humidity in Rio Real

This chart illustrates the average monthly humidity levels in Rio Real, 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 Real is approximately 61%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec76%84%89%91%89%87%80%75%70%66%61%61%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Rio Real

In Rio Real 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 Rio Real, you can check here.

Maximum UV Index Levels in Rio Real for December

The chart shows the monthly maximum UV Index (UVI) for Rio Real 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 Real typically reaches 14, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec141414131110101213141514
Data source: Rio Real 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 Real Compares to Other Months

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

This table compares monthly weather conditions in Rio Real, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather27°C (81°F)31 mm (1.2 inches)76%extreme
February Weather28°C (82°F)30 mm (1.2 inches)84%extreme
March Weather27°C (81°F)68 mm (2.7 inches)89%extreme
April Weather26°C (80°F)85 mm (3.3 inches)91%extreme
May Weather25°C (77°F)91 mm (3.6 inches)89%extreme
June Weather24°C (75°F)81 mm (3.2 inches)87%very high
July Weather23°C (73°F)65 mm (2.6 inches)80%very high
August Weather23°C (74°F)45 mm (1.8 inches)75%extreme
September Weather24°C (76°F)50 mm (2.0 inches)70%extreme
October Weather26°C (79°F)33 mm (1.3 inches)66%extreme
November Weather26°C (80°F)55 mm (2.2 inches)61%extreme
December Weather27°C (80°F)49 mm (1.9 inches)61%extreme

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