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December Weather in Barreiras, Brazil

Last updated: August 22, 2025

In December, the average temperature in Barreiras, Brazil is a pleasant 25°C (78°F). Temperatures can vary, with a minimum of 18°C (64°F) and a maximum soaring to 37°C (98°F). Expect 196 mm (7.7 in) of precipitation spread over approximately 15 days, while the humidity level hovers around 56%, adding to the region's unique climate.

December Temperature in Barreiras

In December in Barreiras, the average temperature is 25°C (78°F). Maximums can reach 37°C (98°F) while minimums can drop to as low as 18°C (64°F). This makes it an ideal time for travelers who enjoy warm weather and outdoor activities.

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

The chart illustrates December temperature patterns in Barreiras, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Barreiras, December typically has an average temperature of 25°C (78°F), with highs reaching up to 37°C (98°F) and lows dropping to around 18°C (64°F).
JanFebMarAprMayJunJulAugSepOctNovDec787777777675747781837978
Data source: Temperature data for Barreiras 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 Barreiras

In Barreiras in December, the total precipitation amount is 196 mm (7.7 in) over a period of 15 days.

December Precipitation Trends in Barreiras

The chart displays monthly precipitation patterns in Barreiras, 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 Barreiras, December typically receives around 196 mm (7.7 inches) of precipitation spread over approximately 15 days.
JanFebMarAprMayJunJulAugSepOctNovDec911931758512112142158196
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Barreiras

In Barreiras in December, humidity is 56%. With an average temperature of 25°C (78°F), this humidity feels like a warm, enveloping embrace, making travel comfortable but slightly sticky, prompting one to seek shaded spots and cool refreshments throughout the day.

December Average Humidity in Barreiras

This chart illustrates the average monthly humidity levels in Barreiras, 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 Barreiras is approximately 56%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec84%89%91%84%67%54%48%44%37%29%35%56%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Barreiras

In Barreiras 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 Barreiras.

Maximum UV Index Levels in Barreiras for December

The chart shows the monthly maximum UV Index (UVI) for Barreiras 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 Barreiras typically reaches 16, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec161515141210101213151516
Data source: Barreiras 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 Barreiras Compares to Other Months

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

This table compares monthly weather conditions in Barreiras, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather26°C (79°F)91 mm (3.6 inches)84%extreme
February Weather25°C (77°F)193 mm (7.6 inches)89%extreme
March Weather25°C (77°F)175 mm (6.9 inches)91%extreme
April Weather25°C (77°F)85 mm (3.3 inches)84%extreme
May Weather25°C (77°F)12 mm (0.5 inches)67%extreme
June Weather24°C (75°F)1 mm (0.0 inches)54%very high
July Weather23°C (74°F)1 mm (0.0 inches)48%very high
August Weather25°C (77°F)2 mm (0.1 inches)44%extreme
September Weather27°C (81°F)1 mm (0.0 inches)37%extreme
October Weather28°C (83°F)42 mm (1.6 inches)29%extreme
November Weather26°C (79°F)158 mm (6.2 inches)35%extreme
December Weather25°C (78°F)196 mm (7.7 inches)56%extreme

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