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December Weather in Alta Floresta, Brazil

Last updated: August 22, 2025

In December, the average temperature in Alta Floresta, Brazil is a pleasant 25°C (78°F). Expect warm days with highs reaching up to 33°C (92°F) and comfortable nights where temperatures can drop to 21°C (70°F). However, be prepared for some rain, as 337 mm (13.3 in) of precipitation can fall over 28 days. With an average humidity of 82%, don't forget to stay hydrated and enjoy the tropical vibes!

December Temperature in Alta Floresta

In December in Alta Floresta, the average temperature is 25°C (78°F). Maximums can reach 33°C (92°F) and minimums can drop to as low as 21°C (70°F). This pleasant climate makes Alta Floresta an excellent destination for travelers seeking warm weather and outdoor activities.

December Weather in Alta Floresta: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Alta Floresta, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Alta Floresta, December typically has an average temperature of 25°C (78°F), with highs reaching up to 33°C (92°F) and lows dropping to around 21°C (70°F).
JanFebMarAprMayJunJulAugSepOctNovDec787778787979798282807877
Data source: Temperature data for Alta Floresta 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 Alta Floresta

In Alta Floresta in December, the precipitation amount is 337 mm (13.3 in) over the course of 28 days.

December Precipitation Trends in Alta Floresta

The chart displays monthly precipitation patterns in Alta Floresta, 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 Alta Floresta, December typically receives around 337 mm (13.3 inches) of precipitation spread over approximately 28 days.
JanFebMarAprMayJunJulAugSepOctNovDec2383173042013950337109277337
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Alta Floresta

In Alta Floresta in December, humidity is 82%. With an average temperature of 25°C (78°F), this humidity feels like a warm, heavy blanket wrapping around you, making outdoor activities a bit more challenging and encouraging you to seek shade or a cool spot during your travels.

December Average Humidity in Alta Floresta

This chart illustrates the average monthly humidity levels in Alta Floresta, 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 Alta Floresta is approximately 82%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec89%88%89%89%78%57%43%33%25%24%56%83%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Alta Floresta

In Alta Floresta in December, the maximum UV index reaches an alarming 15, which falls into the extreme Exposure Category. With a time to burn of just 10 minutes, it's crucial to take precautions. For detailed information, you can check the Hourly UV Index in Alta Floresta.

Maximum UV Index Levels in Alta Floresta for December

The chart shows the monthly maximum UV Index (UVI) for Alta Floresta 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 Alta Floresta typically reaches 15, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec161616151210101112131515
Data source: Alta Floresta 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 Alta Floresta Compares to Other Months

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

This table compares monthly weather conditions in Alta Floresta, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather25°C (78°F)238 mm (9.4 inches)89%extreme
February Weather25°C (77°F)317 mm (12.5 inches)88%extreme
March Weather25°C (78°F)304 mm (12.0 inches)89%extreme
April Weather26°C (78°F)201 mm (7.9 inches)89%extreme
May Weather26°C (79°F)39 mm (1.5 inches)78%extreme
June Weather26°C (79°F)4 mm (0.2 inches)57%very high
July Weather26°C (79°F)0 mm (0.0 inches)43%very high
August Weather28°C (82°F)3 mm (0.1 inches)33%extreme
September Weather28°C (83°F)37 mm (1.4 inches)25%extreme
October Weather27°C (81°F)109 mm (4.3 inches)24%extreme
November Weather26°C (79°F)277 mm (10.9 inches)55%extreme
December Weather25°C (78°F)337 mm (13.3 inches)82%extreme

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