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December Weather in Vilhena, Brazil

Last updated: August 22, 2025

In December, the average temperature in Vilhena, Brazil hovers around 24°C (76°F), offering a pleasant climate for outdoor activities. Expect minimums of 20°C (68°F) and maximums reaching 32°C (89°F), ensuring warmth throughout the day. However, be prepared for wet weather, with an average precipitation of 298 mm (11.7 in) spread over 29 days. The air will feel quite humid, with an average humidity level of 86%, so don’t forget your umbrella!

December Temperature in Vilhena

In December in Vilhena, the average temperature is 24°C (76°F). Maximums can reach 32°C (89°F), while minimums can drop to as low as 20°C (68°F). This pleasant climate makes Vilhena an ideal destination for travelers seeking comfortable weather and a chance to explore the local attractions.

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

The chart illustrates December temperature patterns in Vilhena, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Vilhena, December typically has an average temperature of 24°C (76°F), with highs reaching up to 32°C (89°F) and lows dropping to around 20°C (68°F).
JanFebMarAprMayJunJulAugSepOctNovDec757575757474747780787675
Data source: Temperature data for Vilhena 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 Vilhena

In Vilhena in December, the precipitation amount is 298 mm (11.7 in) distributed over 29 days.

December Precipitation Trends in Vilhena

The chart displays monthly precipitation patterns in Vilhena, 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 Vilhena, December typically receives around 298 mm (11.7 inches) of precipitation spread over approximately 29 days.
JanFebMarAprMayJunJulAugSepOctNovDec218299239149481011962154256298
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Vilhena

In Vilhena in December, humidity is 86%. With an average temperature of 24°C (76°F), this humidity feels like a warm, heavy blanket enveloping you, making outdoor activities both challenging and exhilarating for travelers.

December Average Humidity in Vilhena

This chart illustrates the average monthly humidity levels in Vilhena, 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 Vilhena is approximately 86%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec88%87%89%88%83%64%46%36%28%32%67%86%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Vilhena

In Vilhena 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 Vilhena.

Maximum UV Index Levels in Vilhena for December

The chart shows the monthly maximum UV Index (UVI) for Vilhena 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 Vilhena typically reaches 16, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec161616151110101212141516
Data source: Vilhena 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 Vilhena Compares to Other Months

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

This table compares monthly weather conditions in Vilhena, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather24°C (76°F)218 mm (8.6 inches)88%extreme
February Weather24°C (75°F)299 mm (11.8 inches)87%extreme
March Weather24°C (76°F)239 mm (9.4 inches)89%extreme
April Weather24°C (76°F)149 mm (5.9 inches)88%extreme
May Weather24°C (75°F)48 mm (1.9 inches)83%extreme
June Weather23°C (74°F)10 mm (0.4 inches)64%very high
July Weather24°C (75°F)1 mm (0.0 inches)46%very high
August Weather25°C (78°F)19 mm (0.7 inches)36%extreme
September Weather27°C (80°F)62 mm (2.5 inches)28%extreme
October Weather25°C (78°F)154 mm (6.1 inches)32%extreme
November Weather24°C (76°F)256 mm (10.1 inches)67%extreme
December Weather24°C (76°F)298 mm (11.7 inches)86%extreme

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