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December Weather in Santo Antonio, Brazil

Last updated: August 22, 2025

In December, the average temperature in Santo Antonio, Brazil hovers around 27°C (82°F). Daily temperatures can range from a minimum of 22°C (71°F) to a sweltering maximum of 34°C (94°F). Expect some moisture in the air with an average humidity of 70% and approximately 26 mm (1.0 in) of precipitation spread over 10 days.

December Temperature in Santo Antonio

In December in Santo Antonio, the average temperature is 27°C (82°F). Maximum temperatures can reach 34°C (94°F), while minimums can drop to 22°C (71°F). This weather makes it an ideal time to explore and enjoy outdoor activities in Santo Antonio.

December Weather in Santo Antonio: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Santo Antonio, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Santo Antonio, December typically has an average temperature of 27°C (82°F), with highs reaching up to 34°C (94°F) and lows dropping to around 22°C (71°F).
JanFebMarAprMayJunJulAugSepOctNovDec818181807977767778808181
Data source: Temperature data for Santo Antonio 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 Santo Antonio

In Santo Antonio in December, the precipitation amount is 26 mm (1.0 in) spread over 10 days.

December Precipitation Trends in Santo Antonio

The chart displays monthly precipitation patterns in Santo Antonio, 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 Santo Antonio, December typically receives around 26 mm (1.0 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec3781119937955761414151526
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Santo Antonio

In Santo Antonio in December, humidity is 70%. With an average temperature of 27°C (82°F), this humidity feels like a warm, heavy blanket wrapping around you, making traveling feel slightly sluggish but also inviting, as you step into a vibrant, lush atmosphere that encourages exploration at a leisurely pace.

December Average Humidity in Santo Antonio

This chart illustrates the average monthly humidity levels in Santo Antonio, 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 Santo Antonio is approximately 70%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec86%89%90%89%90%86%80%77%72%68%66%70%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Santo Antonio

In Santo Antonio 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 Santo Antonio, you can check here.

Maximum UV Index Levels in Santo Antonio for December

The chart shows the monthly maximum UV Index (UVI) for Santo Antonio 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 Santo Antonio typically reaches 14, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec141415141311111213131414
Data source: Santo Antonio 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 Santo Antonio Compares to Other Months

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

This table compares monthly weather conditions in Santo Antonio, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather27°C (81°F)37 mm (1.5 inches)86%extreme
February Weather27°C (81°F)81 mm (3.2 inches)89%extreme
March Weather27°C (81°F)119 mm (4.7 inches)89%extreme
April Weather27°C (80°F)93 mm (3.7 inches)89%extreme
May Weather26°C (79°F)79 mm (3.1 inches)90%extreme
June Weather25°C (78°F)55 mm (2.2 inches)86%extreme
July Weather24°C (76°F)76 mm (3.0 inches)80%extreme
August Weather25°C (77°F)14 mm (0.6 inches)77%extreme
September Weather26°C (78°F)14 mm (0.6 inches)72%extreme
October Weather27°C (80°F)15 mm (0.6 inches)68%extreme
November Weather27°C (81°F)15 mm (0.6 inches)66%extreme
December Weather27°C (82°F)26 mm (1.0 inches)70%extreme

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