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December Weather in Sao Jose, Brazil

Last updated: August 22, 2025

In Sao Jose, Brazil, the average temperature in December hovers around 22°C (72°F). Expect a minimum of 11°C (52°F) and a maximum of 36°C (97°F). This month also brings considerable rainfall, with 231 mm (9.1 in) of precipitation spread over 21 days. You may notice the air feels quite humid, with an average humidity level of 88%.

December Temperature in Sao Jose

In December in Sao Jose, the average temperature is 22°C (72°F). Maximum temperatures can reach 36°C (97°F), while minimums can drop as low as 11°C (52°F). These mild conditions make Sao Jose an ideal destination for travelers seeking comfortable weather.

December Weather in Sao Jose: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Sao Jose, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Sao Jose, December typically has an average temperature of 22°C (72°F), with highs reaching up to 36°C (97°F) and lows dropping to around 11°C (52°F).
JanFebMarAprMayJunJulAugSepOctNovDec747371676260586064666872
Data source: Temperature data for Sao Jose 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 Sao Jose

In Sao Jose in December, the total precipitation amount is 231 mm (9.1 in), occurring over the course of 21 days.

December Precipitation Trends in Sao Jose

The chart displays monthly precipitation patterns in Sao Jose, 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 Sao Jose, December typically receives around 231 mm (9.1 inches) of precipitation spread over approximately 21 days.
JanFebMarAprMayJunJulAugSepOctNovDec273198192941331386266147136165231
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Sao Jose

In Sao Jose in December humidity is 88%. With an average temperature of 22°C (72°F), this humidity feels like a warm, steamy embrace that clings to your skin, making outdoor exploration a sweaty challenge but also a vibrant experience as the air is thick with the scent of nature and vibrant local life.

December Average Humidity in Sao Jose

This chart illustrates the average monthly humidity levels in Sao Jose, 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 Sao Jose is approximately 88%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec85%84%84%83%86%82%80%81%86%87%87%88%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Sao Jose

In Sao Jose 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 Sao Jose, you can check here.

Maximum UV Index Levels in Sao Jose for December

The chart shows the monthly maximum UV Index (UVI) for Sao Jose 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 Sao Jose typically reaches 14, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec15141210755710121414
Data source: Sao Jose 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 Sao Jose Compares to Other Months

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

This table compares monthly weather conditions in Sao Jose, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather23°C (74°F)273 mm (10.7 inches)85%extreme
February Weather23°C (73°F)198 mm (7.8 inches)84%extreme
March Weather22°C (71°F)192 mm (7.6 inches)84%extreme
April Weather19°C (67°F)94 mm (3.7 inches)83%very high
May Weather17°C (62°F)133 mm (5.2 inches)86%high
June Weather15°C (60°F)138 mm (5.4 inches)82%moderate
July Weather14°C (58°F)62 mm (2.4 inches)80%moderate
August Weather15°C (60°F)66 mm (2.6 inches)81%high
September Weather18°C (65°F)147 mm (5.8 inches)86%very high
October Weather19°C (66°F)136 mm (5.3 inches)87%extreme
November Weather20°C (68°F)165 mm (6.5 inches)87%extreme
December Weather22°C (72°F)231 mm (9.1 inches)88%extreme

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