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December Weather in Osasco, Brazil

Last updated: August 22, 2025

In Osasco, Brazil, the average temperature in December hovers around 22°C (72°F), presenting a pleasant climate for outdoor activities. Expect minimums dipping to 12°C (54°F) and highs soaring to 34°C (93°F). However, brace yourself for some rain, as 143 mm (5.6 in) of precipitation usually falls over 21 days. With an average humidity level of 80%, it's wise to stay hydrated and enjoy the warmth!

December Temperature in Osasco

In December in Osasco, the average temperature is 22°C (72°F). The maximum can reach 34°C (93°F), and the minimum can be as low as 12°C (54°F). This pleasant climate makes it an ideal destination for travelers seeking both warm days and cooler evenings.

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

The chart illustrates December temperature patterns in Osasco, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Osasco, December typically has an average temperature of 22°C (72°F), with highs reaching up to 34°C (93°F) and lows dropping to around 12°C (54°F).
JanFebMarAprMayJunJulAugSepOctNovDec747373696564626369706972
Data source: Temperature data for Osasco 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 Osasco

In Osasco in December, the precipitation amount is 143 mm (5.6 in) spread over 21 days.

December Precipitation Trends in Osasco

The chart displays monthly precipitation patterns in Osasco, 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 Osasco, December typically receives around 143 mm (5.6 inches) of precipitation spread over approximately 21 days.
JanFebMarAprMayJunJulAugSepOctNovDec177158135554845255740118116143
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Osasco

In Osasco 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 Osasco

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

In Osasco 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 Osasco.

Maximum UV Index Levels in Osasco for December

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

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

This table compares monthly weather conditions in Osasco, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather23°C (74°F)177 mm (7.0 inches)88%extreme
February Weather23°C (73°F)158 mm (6.2 inches)88%extreme
March Weather23°C (73°F)135 mm (5.3 inches)87%extreme
April Weather20°C (69°F)55 mm (2.2 inches)84%extreme
May Weather18°C (65°F)48 mm (1.9 inches)79%very high
June Weather18°C (64°F)45 mm (1.8 inches)77%high
July Weather17°C (62°F)25 mm (1.0 inches)72%high
August Weather17°C (63°F)57 mm (2.2 inches)65%very high
September Weather20°C (69°F)40 mm (1.6 inches)58%extreme
October Weather21°C (70°F)118 mm (4.6 inches)50%extreme
November Weather21°C (69°F)116 mm (4.6 inches)75%extreme
December Weather22°C (72°F)143 mm (5.6 inches)80%extreme

Compare Osasco's Climate with Cities Worldwide