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December Weather in Arroio do Meio, Brazil

Last updated: August 22, 2025

In December, the average temperature in Arroio do Meio, Brazil is a pleasant 23°C (74°F). However, be prepared for a minimum dipping to 11°C (52°F) and maximums soaring up to 37°C (100°F). During this month, expect around 99 mm (3.9 in) of precipitation over approximately 11 days, with an average humidity level of about 87%.

December Temperature in Arroio do Meio

In December in Arroio do Meio, the average temperature is 23°C (74°F), with maximums reaching up to 37°C (100°F) and minimums dropping as low as 11°C (52°F). Travelers should prepare for warm days and cooler nights.

December Weather in Arroio do Meio: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Arroio do Meio, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Arroio do Meio, December typically has an average temperature of 23°C (74°F), with highs reaching up to 37°C (100°F) and lows dropping to around 11°C (52°F).
JanFebMarAprMayJunJulAugSepOctNovDec777572686159576064677074
Data source: Temperature data for Arroio do Meio 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 Arroio do Meio

In Arroio do Meio, in December, the precipitation amount is 99 mm (3.9 in) over the course of 11 days.

December Precipitation Trends in Arroio do Meio

The chart displays monthly precipitation patterns in Arroio do Meio, 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 Arroio do Meio, December typically receives around 99 mm (3.9 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec129121124951741281228017615113299
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Arroio do Meio

In Arroio do Meio in December, humidity is 87%. With an average temperature of 23°C (74°F), this humidity feels like a warm, sticky embrace that can quickly wear you down while traveling, making even short walks feel exhausting and necessitating frequent breaks for hydration and cool air.

December Average Humidity in Arroio do Meio

This chart illustrates the average monthly humidity levels in Arroio do Meio, 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 Arroio do Meio is approximately 87%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec80%77%79%83%88%86%82%77%80%84%83%87%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Arroio do Meio

In Arroio do Meio 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 Arroio do Meio, you can check here.

Maximum UV Index Levels in Arroio do Meio for December

The chart shows the monthly maximum UV Index (UVI) for Arroio do Meio 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 Arroio do Meio typically reaches 14, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec141312965579121314
Data source: Arroio do Meio 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 Arroio do Meio Compares to Other Months

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

This table compares monthly weather conditions in Arroio do Meio, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather25°C (77°F)129 mm (5.1 inches)80%extreme
February Weather24°C (75°F)121 mm (4.8 inches)77%extreme
March Weather22°C (73°F)124 mm (4.9 inches)79%extreme
April Weather20°C (69°F)95 mm (3.7 inches)83%very high
May Weather16°C (62°F)174 mm (6.9 inches)88%high
June Weather15°C (59°F)128 mm (5.0 inches)86%moderate
July Weather14°C (57°F)122 mm (4.8 inches)82%moderate
August Weather15°C (60°F)80 mm (3.1 inches)77%high
September Weather18°C (64°F)176 mm (6.9 inches)80%very high
October Weather19°C (67°F)150 mm (5.9 inches)84%extreme
November Weather21°C (70°F)132 mm (5.2 inches)83%extreme
December Weather23°C (74°F)99 mm (3.9 inches)87%extreme

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