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December Weather in Serro, Brazil

Last updated: August 22, 2025

In December, the average temperature in Serro, Brazil hovers around a pleasant 21°C (71°F). Expect lows of 13°C (56°F) and highs reaching 31°C (88°F), offering a comfortable range for all activities. However, be prepared for precipitation, as the area receives about 274 mm (10.8 in) of rain over 20 days. With an average humidity of 60%, the atmosphere is refreshingly balanced, making this month an intriguing time to explore!

December Temperature in Serro

In December in Serro, the average temperature is 21°C (71°F). Maximum temperatures can reach 31°C (88°F), while the minimum can dip to 13°C (56°F). This pleasant climate makes it an ideal destination for outdoor activities and exploration.

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

The chart illustrates December temperature patterns in Serro, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Serro, December typically has an average temperature of 21°C (71°F), with highs reaching up to 31°C (88°F) and lows dropping to around 13°C (56°F).
JanFebMarAprMayJunJulAugSepOctNovDec727170686463616368716970
Data source: Temperature data for Serro 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 Serro

In Serro in December, the total precipitation amount is 274 mm (10.8 in) spread over 20 days.

December Precipitation Trends in Serro

The chart displays monthly precipitation patterns in Serro, 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 Serro, December typically receives around 274 mm (10.8 inches) of precipitation spread over approximately 20 days.
JanFebMarAprMayJunJulAugSepOctNovDec13026816180471281832140207274
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Serro

In Serro in December humidity is 60%. With an average temperature of 21°C (71°F), this humidity feels like a warm embrace, making it mildly uncomfortable for traveling, but still perfect for enjoying outdoor activities with a light breeze to keep you refreshed.

December Average Humidity in Serro

This chart illustrates the average monthly humidity levels in Serro, 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 Serro is approximately 60%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec80%84%86%83%78%77%74%69%61%47%54%60%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Serro

In Serro in December, the maximum UV index is 16, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, making it crucial to take protective measures. For detailed information, you can refer to the Hourly UV Index in Serro.

Maximum UV Index Levels in Serro for December

The chart shows the monthly maximum UV Index (UVI) for Serro 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 Serro typically reaches 16, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec1716151310891113141516
Data source: Serro 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 Serro Compares to Other Months

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

This table compares monthly weather conditions in Serro, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather22°C (72°F)130 mm (5.1 inches)80%extreme
February Weather21°C (71°F)268 mm (10.5 inches)84%extreme
March Weather21°C (70°F)161 mm (6.3 inches)86%extreme
April Weather20°C (68°F)80 mm (3.2 inches)83%extreme
May Weather18°C (65°F)47 mm (1.8 inches)78%very high
June Weather17°C (63°F)12 mm (0.5 inches)77%very high
July Weather16°C (62°F)8 mm (0.3 inches)74%very high
August Weather17°C (63°F)18 mm (0.7 inches)69%extreme
September Weather20°C (68°F)32 mm (1.2 inches)61%extreme
October Weather21°C (71°F)139 mm (5.5 inches)47%extreme
November Weather21°C (70°F)207 mm (8.2 inches)54%extreme
December Weather21°C (71°F)274 mm (10.8 inches)60%extreme

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