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December Weather in Pirai do Sul, Brazil

Last updated: August 22, 2025

In December, the average temperature in Pirai do Sul, Brazil is a pleasant 21°C (69°F). Expect a range from a cool 10°C (51°F) to a warm 31°C (89°F). However, be prepared for some wet days, as precipitation can reach up to 185 mm (7.3 in) over 18 days. The air tends to be quite humid, with an average humidity level of 86%, adding to the tropical feel of the atmosphere.

December Temperature in Pirai do Sul

In December in Pirai do Sul, the average temperature is 21°C (69°F). Maximum temperatures can reach 31°C (89°F), while the minimum can drop to as low as 10°C (51°F). This pleasant weather makes Pirai do Sul an ideal destination for travelers looking to enjoy a comfortable climate.

December Weather in Pirai do Sul: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Pirai do Sul, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Pirai do Sul, December typically has an average temperature of 21°C (69°F), with highs reaching up to 31°C (89°F) and lows dropping to around 10°C (51°F).
JanFebMarAprMayJunJulAugSepOctNovDec707069656159575966666769
Data source: Temperature data for Pirai do Sul 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 Pirai do Sul

In Pirai do Sul in December, the total precipitation amount is 185 mm (7.3 in) spread over 18 days.

December Precipitation Trends in Pirai do Sul

The chart displays monthly precipitation patterns in Pirai do Sul, 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 Pirai do Sul, December typically receives around 185 mm (7.3 inches) of precipitation spread over approximately 18 days.
JanFebMarAprMayJunJulAugSepOctNovDec1911351385174110327464171116185
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Pirai do Sul

In Pirai do Sul in December humidity is 86%. With an average temperature of 21°C (69°F), this humidity feels like a thick blanket enveloping you, making every step feel heavier and more deliberate while traveling. The air clings to your skin, creating a sticky sensation that might slow you down, but the vibrant sights and sounds around you encourage exploration despite the sultry atmosphere.

December Average Humidity in Pirai do Sul

This chart illustrates the average monthly humidity levels in Pirai do Sul, 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 Pirai do Sul is approximately 86%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec85%81%80%77%76%74%66%57%58%60%78%86%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Pirai do Sul

In Pirai do Sul 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 Pirai do Sul.

Maximum UV Index Levels in Pirai do Sul for December

The chart shows the monthly maximum UV Index (UVI) for Pirai do Sul 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 Pirai do Sul typically reaches 16, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec16161311867912141516
Data source: Pirai do Sul 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 Pirai do Sul Compares to Other Months

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

This table compares monthly weather conditions in Pirai do Sul, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather21°C (70°F)191 mm (7.5 inches)85%extreme
February Weather21°C (70°F)135 mm (5.3 inches)80%extreme
March Weather21°C (69°F)138 mm (5.4 inches)80%extreme
April Weather18°C (65°F)51 mm (2.0 inches)77%extreme
May Weather16°C (61°F)74 mm (2.9 inches)76%very high
June Weather15°C (59°F)110 mm (4.3 inches)74%high
July Weather14°C (58°F)32 mm (1.3 inches)66%high
August Weather15°C (59°F)74 mm (2.9 inches)57%very high
September Weather19°C (66°F)63 mm (2.5 inches)58%extreme
October Weather19°C (66°F)171 mm (6.7 inches)60%extreme
November Weather19°C (67°F)116 mm (4.6 inches)78%extreme
December Weather21°C (69°F)185 mm (7.3 inches)86%extreme

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