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December Weather in Sao Simao, Brazil

Last updated: August 22, 2025

In December, the average temperature in Sao Simao, Brazil hovers around 25°C (77°F), with a comfortable range where the minimum can drop to 15°C (59°F) and the maximum can soar up to 35°C (95°F). You'll want to be prepared for some wet days, as the region experiences an average precipitation of 165 mm (6.5 in) across 17 days, and with an average humidity of 80%, it’s best to embrace the tropical vibe!

December Temperature in Sao Simao

In December in Sao Simao, the average temperature is 25°C (77°F). The maximum can reach 35°C (95°F), while the minimum can be as low as 15°C (59°F). This pleasant climate makes it an ideal time for travelers to explore and enjoy the outdoor attractions in Sao Simao.

December Weather in Sao Simao: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Sao Simao, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Sao Simao, December typically has an average temperature of 25°C (77°F), with highs reaching up to 35°C (95°F) and lows dropping to around 15°C (59°F).
JanFebMarAprMayJunJulAugSepOctNovDec777777736968666976777677
Data source: Temperature data for Sao Simao 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 Sao Simao

In Sao Simao in December, the precipitation amount reaches 165 mm (6.5 in) over a span of 17 days.

December Precipitation Trends in Sao Simao

The chart displays monthly precipitation patterns in Sao Simao, 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 Sao Simao, December typically receives around 165 mm (6.5 inches) of precipitation spread over approximately 17 days.
JanFebMarAprMayJunJulAugSepOctNovDec17615011759291292229113150166
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Sao Simao

In Sao Simao in December humidity is 80%. With an average temperature of 25°C (77°F), this humidity feels like traveling through a warm, tropical rainforest where the air is thick and steamy, making even the simplest stroll feel like a workout.

December Average Humidity in Sao Simao

This chart illustrates the average monthly humidity levels in Sao Simao, 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 Sao Simao is approximately 80%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec85%87%86%79%68%60%57%48%41%35%65%80%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Sao Simao

In Sao Simao 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 Sao Simao.

Maximum UV Index Levels in Sao Simao for December

The chart shows the monthly maximum UV Index (UVI) for Sao Simao 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 Sao Simao typically reaches 16, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec151613118781011131416
Data source: Sao Simao 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 Sao Simao Compares to Other Months

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

This table compares monthly weather conditions in Sao Simao, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather25°C (77°F)176 mm (6.9 inches)85%extreme
February Weather25°C (77°F)150 mm (5.9 inches)87%extreme
March Weather25°C (77°F)117 mm (4.6 inches)86%extreme
April Weather23°C (74°F)59 mm (2.3 inches)79%extreme
May Weather20°C (69°F)29 mm (1.1 inches)68%very high
June Weather20°C (68°F)12 mm (0.5 inches)60%high
July Weather19°C (66°F)9 mm (0.3 inches)57%very high
August Weather21°C (70°F)22 mm (0.9 inches)48%very high
September Weather25°C (77°F)29 mm (1.1 inches)41%extreme
October Weather25°C (77°F)113 mm (4.4 inches)35%extreme
November Weather24°C (76°F)150 mm (5.9 inches)65%extreme
December Weather25°C (77°F)165 mm (6.5 inches)80%extreme

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