nomadseason

December Weather in Rio Grande da Serra, Brazil

Last updated: August 22, 2025

The average temperature in Rio Grande da Serra, Brazil during December is a pleasant 22°C (72°F). Expect a range, with minimum temperatures dipping to 12°C (55°F) and maximums soaring up to 33°C (92°F). However, be prepared for some rain, as precipitation can reach 216 mm (8.5 in) over 24 days. With an average humidity of 80%, it's wise to stay hydrated and plan for moisture!

December Temperature in Rio Grande da Serra

In December in Rio Grande da Serra, the average temperature is 22°C (72°F). Maximums can reach 33°C (92°F), and minimums can drop to as low as 12°C (55°F). This pleasant and varied climate makes Rio Grande da Serra an ideal destination for travelers seeking warm weather and comfortable conditions.

December Weather in Rio Grande da Serra: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Rio Grande da Serra, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Rio Grande da Serra, December typically has an average temperature of 22°C (72°F), with highs reaching up to 33°C (92°F) and lows dropping to around 12°C (55°F).
JanFebMarAprMayJunJulAugSepOctNovDec747373686564626367686872
Data source: Temperature data for Rio Grande da Serra generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

December Precipitation in Rio Grande da Serra

In Rio Grande da Serra in December, the precipitation amount is 216 mm (8.5 in) spread over a duration of 24 days.

December Precipitation Trends in Rio Grande da Serra

The chart displays monthly precipitation patterns in Rio Grande da Serra, 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 Rio Grande da Serra, December typically receives around 216 mm (8.5 inches) of precipitation spread over approximately 24 days.
JanFebMarAprMayJunJulAugSepOctNovDec2802562491178681539569182169216
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

December Humidity in Rio Grande da Serra

In Rio Grande da Serra in December humidity is 80%. With an average temperature of 22°C (72°F), this humidity feels like a warm, enveloping blanket that can quickly sap your energy while traveling, making you feel sticky and uncomfortable if you're not prepared.

December Average Humidity in Rio Grande da Serra

This chart illustrates the average monthly humidity levels in Rio Grande da Serra, 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 Rio Grande da Serra is approximately 80%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec88%88%88%84%79%77%72%65%58%50%75%80%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Rio Grande da Serra

In Rio Grande da Serra 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 Rio Grande da Serra.

Maximum UV Index Levels in Rio Grande da Serra for December

The chart shows the monthly maximum UV Index (UVI) for Rio Grande da Serra 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 Rio Grande da Serra typically reaches 15, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec16151211867911131415
Data source: Rio Grande da Serra 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 Rio Grande da Serra Compares to Other Months

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

This table compares monthly weather conditions in Rio Grande da Serra, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather24°C (75°F)280 mm (11.0 inches)88%extreme
February Weather23°C (73°F)256 mm (10.1 inches)88%extreme
March Weather23°C (73°F)249 mm (9.8 inches)87%extreme
April Weather20°C (69°F)117 mm (4.6 inches)84%extreme
May Weather18°C (65°F)86 mm (3.4 inches)79%very high
June Weather18°C (65°F)81 mm (3.2 inches)77%high
July Weather17°C (62°F)53 mm (2.1 inches)72%high
August Weather17°C (63°F)95 mm (3.8 inches)65%very high
September Weather20°C (68°F)69 mm (2.7 inches)58%extreme
October Weather20°C (69°F)182 mm (7.2 inches)50%extreme
November Weather20°C (69°F)169 mm (6.6 inches)75%extreme
December Weather22°C (72°F)216 mm (8.5 inches)80%extreme

Compare Rio Grande da Serra's Climate with Cities Worldwide