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December Weather in Cumaru, Brazil

Last updated: August 22, 2025

In Cumaru, Brazil, the average temperature in December hovers around 26°C (78°F), providing a pleasant climate. Temperatures can range from a cooler 19°C (66°F) to a warm 34°C (94°F). Expect some occasional rain, with an average precipitation of 27 mm (1.1 in) over 11 days. With an average humidity of 72%, the weather perfectly balances warmth and comfort.

December Temperature in Cumaru

In December in Cumaru, the average temperature is 26°C (78°F), with maximums reaching up to 34°C (94°F) and minimums dropping as low as 19°C (66°F). This pleasant climate makes Cumaru an ideal destination for travelers seeking warm weather and outdoor activities.

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

The chart illustrates December temperature patterns in Cumaru, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Cumaru, December typically has an average temperature of 26°C (78°F), with highs reaching up to 34°C (94°F) and lows dropping to around 19°C (66°F).
JanFebMarAprMayJunJulAugSepOctNovDec787978777674737375777878
Data source: Temperature data for Cumaru 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 Cumaru

In Cumaru in December, the precipitation amount is 27 mm (1.1 in) spread over 11 days.

December Precipitation Trends in Cumaru

The chart displays monthly precipitation patterns in Cumaru, 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 Cumaru, December typically receives around 27 mm (1.1 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec395778696450392221182127
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Cumaru

In Cumaru in December, humidity is 72%. With an average temperature of 26°C (78°F), this humidity feels like a warm, enveloping blanket that can leave travelers feeling sticky and slightly fatigued, making it essential to stay hydrated and take breaks in the shade.

December Average Humidity in Cumaru

This chart illustrates the average monthly humidity levels in Cumaru, 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 Cumaru is approximately 72%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec84%87%88%89%90%89%86%84%79%74%71%72%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Cumaru

In Cumaru 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 Cumaru, you can check here.

Maximum UV Index Levels in Cumaru for December

The chart shows the monthly maximum UV Index (UVI) for Cumaru 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 Cumaru typically reaches 14, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec141415141211111213131414
Data source: Cumaru 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 Cumaru Compares to Other Months

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

This table compares monthly weather conditions in Cumaru, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather26°C (78°F)39 mm (1.5 inches)84%extreme
February Weather26°C (79°F)57 mm (2.3 inches)87%extreme
March Weather26°C (79°F)78 mm (3.1 inches)88%extreme
April Weather25°C (78°F)69 mm (2.7 inches)89%extreme
May Weather24°C (76°F)64 mm (2.5 inches)90%extreme
June Weather23°C (74°F)50 mm (2.0 inches)89%extreme
July Weather23°C (73°F)39 mm (1.6 inches)86%extreme
August Weather23°C (73°F)22 mm (0.9 inches)84%extreme
September Weather24°C (75°F)21 mm (0.8 inches)79%extreme
October Weather25°C (77°F)18 mm (0.7 inches)74%extreme
November Weather25°C (78°F)21 mm (0.8 inches)71%extreme
December Weather26°C (78°F)27 mm (1.1 inches)72%extreme

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