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December Weather in Osorio, Brazil

Last updated: August 22, 2025

In Osorio, Brazil, the average temperature in December hovers around 23°C (73°F), providing a pleasant climate for various activities. However, be prepared for a temperature range between a cool 13°C (55°F) and a warm 33°C (92°F). During this month, expect about 74 mm (2.9 in) of precipitation spread over 11 days, leading to an average humidity of a muggy 84%.

December Temperature in Osorio

In December in Osorio, the average temperature is 23°C (73°F). Maximums can reach 33°C (92°F), and minimums can drop as low as 13°C (55°F). This mild climate makes Osorio an ideal destination for outdoor adventures and enjoyable sightseeing.

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

The chart illustrates December temperature patterns in Osorio, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Osorio, December typically has an average temperature of 23°C (73°F), with highs reaching up to 33°C (92°F) and lows dropping to around 13°C (55°F).
JanFebMarAprMayJunJulAugSepOctNovDec767674706461596164677073
Data source: Temperature data for Osorio 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 Osorio

In Osorio in December, the precipitation amount is 74 mm (2.9 in) spread over the course of 11 days.

December Precipitation Trends in Osorio

The chart displays monthly precipitation patterns in Osorio, 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 Osorio, December typically receives around 74 mm (2.9 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec95959877144941106416012411374
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Osorio

In Osorio in December, humidity is 84%. With an average temperature of 23°C (73°F), this humidity feels like a warm, thick blanket wrapping around you, making travel slightly exhausting but also uniquely invigorating as you navigate through the vibrant atmosphere.

December Average Humidity in Osorio

This chart illustrates the average monthly humidity levels in Osorio, 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 Osorio is approximately 84%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec78%79%79%82%87%85%82%81%84%85%82%84%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Osorio

In Osorio 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 Osorio, you can check here.

Maximum UV Index Levels in Osorio for December

The chart shows the monthly maximum UV Index (UVI) for Osorio 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 Osorio typically reaches 14, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec141312965579121414
Data source: Osorio 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 Osorio Compares to Other Months

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

This table compares monthly weather conditions in Osorio, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather25°C (77°F)95 mm (3.8 inches)77%extreme
February Weather24°C (76°F)95 mm (3.7 inches)79%extreme
March Weather23°C (74°F)98 mm (3.9 inches)79%extreme
April Weather21°C (71°F)76 mm (3.0 inches)82%very high
May Weather18°C (65°F)144 mm (5.7 inches)87%high
June Weather16°C (61°F)94 mm (3.7 inches)85%moderate
July Weather15°C (59°F)110 mm (4.3 inches)82%moderate
August Weather16°C (61°F)64 mm (2.5 inches)81%high
September Weather18°C (64°F)160 mm (6.3 inches)84%very high
October Weather19°C (67°F)124 mm (4.9 inches)85%extreme
November Weather21°C (70°F)113 mm (4.5 inches)82%extreme
December Weather23°C (73°F)74 mm (2.9 inches)84%extreme

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