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December Weather in Jacarei, Brazil

Last updated: August 22, 2025

In December, the average temperature in Jacarei, Brazil is a pleasant 23°C (73°F). Expect a range where the minimum dips to 13°C (55°F) and the maximum can soar to 33°C (92°F). With 149 mm (5.9 in) of precipitation spread over 20 days, it's wise to prepare for some rainy spells. Additionally, the average humidity hovers around 80%, creating a warm and slightly sticky atmosphere perfect for those who enjoy the tropics!

December Temperature in Jacarei

In December in Jacarei, 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 Jacarei an ideal destination for outdoor adventures and enjoyable sightseeing.

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

The chart illustrates December temperature patterns in Jacarei, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Jacarei, 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).
JanFebMarAprMayJunJulAugSepOctNovDec757473706564626470707073
Data source: Temperature data for Jacarei 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 Jacarei

In Jacarei in December, the precipitation amount reaches 149 mm (5.9 in) over the course of 20 days.

December Precipitation Trends in Jacarei

The chart displays monthly precipitation patterns in Jacarei, 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 Jacarei, December typically receives around 149 mm (5.9 inches) of precipitation spread over approximately 20 days.
JanFebMarAprMayJunJulAugSepOctNovDec161154122475035215450120123149
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Jacarei

In Jacarei in December humidity is 80%. With an average temperature of 23°C (73°F), this humidity feels like a warm blanket enveloping you, making outdoor activities slightly sticky and requiring frequent breaks in shaded areas to stay comfortable while exploring.

December Average Humidity in Jacarei

This chart illustrates the average monthly humidity levels in Jacarei, 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 Jacarei 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 Jacarei

In Jacarei 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 Jacarei.

Maximum UV Index Levels in Jacarei for December

The chart shows the monthly maximum UV Index (UVI) for Jacarei 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 Jacarei typically reaches 16, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec16161311867912131416
Data source: Jacarei 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 Jacarei Compares to Other Months

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

This table compares monthly weather conditions in Jacarei, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather24°C (75°F)161 mm (6.3 inches)88%extreme
February Weather23°C (74°F)154 mm (6.0 inches)88%extreme
March Weather23°C (74°F)122 mm (4.8 inches)87%extreme
April Weather21°C (70°F)47 mm (1.8 inches)84%extreme
May Weather19°C (66°F)50 mm (2.0 inches)79%very high
June Weather18°C (65°F)35 mm (1.4 inches)77%high
July Weather17°C (62°F)21 mm (0.8 inches)72%high
August Weather18°C (64°F)54 mm (2.1 inches)65%very high
September Weather21°C (70°F)50 mm (2.0 inches)58%extreme
October Weather21°C (71°F)120 mm (4.7 inches)50%extreme
November Weather21°C (71°F)123 mm (4.8 inches)75%extreme
December Weather23°C (73°F)149 mm (5.9 inches)80%extreme

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