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December Weather in Vianopolis, Brazil

Last updated: August 22, 2025

In December, the average temperature in Vianopolis, Brazil is a pleasant 23°C (74°F), with a minimum dipping to 16°C (61°F) and a maximum soaring to 32°C (91°F). Expect around 233 mm (9.2 in) of precipitation over 22 days, contributing to an average humidity level of 76%. Enjoy the mild, yet humid atmosphere as you explore this vibrant destination!

December Temperature in Vianopolis

In December in Vianopolis, the average temperature is 23°C (74°F). Maximums can reach 32°C (91°F), while minimums can drop to as low as 16°C (61°F). This pleasant climate makes Vianopolis an ideal destination for outdoor activities and sightseeing during this time of year.

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

The chart illustrates December temperature patterns in Vianopolis, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Vianopolis, December typically has an average temperature of 23°C (74°F), with highs reaching up to 32°C (91°F) and lows dropping to around 16°C (61°F).
JanFebMarAprMayJunJulAugSepOctNovDec747374737069677277777374
Data source: Temperature data for Vianopolis 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 Vianopolis

In Vianopolis in December, the total precipitation amount is 233 mm (9.2 in), distributed over a period of 22 days.

December Precipitation Trends in Vianopolis

The chart displays monthly precipitation patterns in Vianopolis, 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 Vianopolis, December typically receives around 233 mm (9.2 inches) of precipitation spread over approximately 22 days.
JanFebMarAprMayJunJulAugSepOctNovDec146255178982210214119220233
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Vianopolis

In Vianopolis in December humidity is 76%. With an average temperature of 23°C (74°F), this humidity feels like a warm, thick blanket wrapping around you, making outdoor exploration feel a bit sluggish and requiring frequent breaks for hydration and respite from the heat.

December Average Humidity in Vianopolis

This chart illustrates the average monthly humidity levels in Vianopolis, 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 Vianopolis is approximately 76%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec85%89%89%80%67%63%56%47%36%28%58%76%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Vianopolis

In Vianopolis in December, the maximum UV index reaches an alarming 17, which falls under the extreme Exposure Category. With a time to burn of just 10 minutes, it's crucial to stay protected. For more details on the hourly UV index in Vianopolis, you can check Hourly UV Index in Vianopolis.

Maximum UV Index Levels in Vianopolis for December

The chart shows the monthly maximum UV Index (UVI) for Vianopolis 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 Vianopolis typically reaches 17, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec1616141310991212151617
Data source: Vianopolis 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 Vianopolis Compares to Other Months

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

This table compares monthly weather conditions in Vianopolis, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather23°C (74°F)146 mm (5.8 inches)85%extreme
February Weather23°C (74°F)255 mm (10.0 inches)89%extreme
March Weather23°C (74°F)178 mm (7.0 inches)89%extreme
April Weather23°C (73°F)98 mm (3.9 inches)80%extreme
May Weather21°C (70°F)22 mm (0.9 inches)67%very high
June Weather21°C (69°F)1 mm (0.0 inches)62%very high
July Weather20°C (68°F)0 mm (0.0 inches)56%very high
August Weather22°C (73°F)2 mm (0.1 inches)47%extreme
September Weather25°C (77°F)14 mm (0.5 inches)36%extreme
October Weather25°C (77°F)119 mm (4.7 inches)28%extreme
November Weather23°C (74°F)220 mm (8.6 inches)58%extreme
December Weather23°C (74°F)233 mm (9.2 inches)76%extreme

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