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December Weather in Arinos, Brazil

Last updated: August 22, 2025

In Arinos, Brazil, the average temperature in December hovers around 25°C (78°F), with a comfortable minimum of 18°C (65°F) and a sizzling maximum of 35°C (96°F). Expect about 220 mm (8.7 in) of precipitation over approximately 18 days, and enjoy an average humidity level of 61%. Stay prepared for a mix of warm days and refreshing showers!

December Temperature in Arinos

In December in Arinos, the average temperature is 25°C (78°F). Maximums can reach 35°C (96°F), while minimums can drop as low as 18°C (65°F). This climate makes Arinos an ideal destination for travelers who enjoy warm weather and outdoor activities.

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

The chart illustrates December temperature patterns in Arinos, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Arinos, December typically has an average temperature of 25°C (78°F), with highs reaching up to 35°C (96°F) and lows dropping to around 18°C (65°F).
JanFebMarAprMayJunJulAugSepOctNovDec797878777573727580827878
Data source: Temperature data for Arinos 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 Arinos

In Arinos in December, the precipitation amount is 220 mm (8.7 in) during a span of 18 days.

December Precipitation Trends in Arinos

The chart displays monthly precipitation patterns in Arinos, 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 Arinos, December typically receives around 220 mm (8.7 inches) of precipitation spread over approximately 18 days.
JanFebMarAprMayJunJulAugSepOctNovDec921691415315106371153220
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Arinos

In Arinos in December humidity is 61%. With an average temperature of 25°C (78°F), this humidity feels like a warm, enveloping blanket that can make outdoor activities slightly sticky but still enjoyable, especially if you stay hydrated and take breaks in the shade.

December Average Humidity in Arinos

This chart illustrates the average monthly humidity levels in Arinos, 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 Arinos is approximately 61%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec83%88%89%78%67%61%58%51%42%31%48%61%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Arinos

In Arinos 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 Arinos.

Maximum UV Index Levels in Arinos for December

The chart shows the monthly maximum UV Index (UVI) for Arinos 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 Arinos typically reaches 16, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec1715141310991213141516
Data source: Arinos 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 Arinos Compares to Other Months

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

This table compares monthly weather conditions in Arinos, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather26°C (80°F)92 mm (3.6 inches)83%extreme
February Weather25°C (78°F)169 mm (6.6 inches)88%extreme
March Weather26°C (78°F)141 mm (5.5 inches)89%extreme
April Weather25°C (78°F)53 mm (2.1 inches)78%extreme
May Weather24°C (75°F)15 mm (0.6 inches)67%very high
June Weather23°C (74°F)1 mm (0.0 inches)61%very high
July Weather22°C (72°F)0 mm (0.0 inches)58%very high
August Weather24°C (76°F)6 mm (0.2 inches)51%extreme
September Weather27°C (80°F)3 mm (0.1 inches)42%extreme
October Weather28°C (83°F)71 mm (2.8 inches)31%extreme
November Weather25°C (78°F)153 mm (6.0 inches)48%extreme
December Weather25°C (78°F)220 mm (8.7 inches)61%extreme

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