December Weather in Arcos, Brazil

Last updated: August 22, 2025

In December, the average temperature in Arcos, Brazil is a pleasant 23°C (74°F), but you can expect a range from a cool 15°C (59°F) to a warm 32°C (91°F). This month also brings an average precipitation of 207 mm (8.1 in) spread over 22 days, contributing to a humidity level of around 72%. Whether you're exploring or lounging, be prepared for some delightful weather!

December Temperature in Arcos

In December in Arcos, the average temperature is 23°C (74°F). Maximums can reach 32°C (91°F), and minimums can be as low as 15°C (59°F). This makes it an ideal time for travelers to enjoy pleasant weather while exploring the area.

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

The chart illustrates December temperature patterns in Arcos, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Arcos, December typically has an average temperature of 23°C (74°F), with highs reaching up to 32°C (91°F) and lows dropping to around 15°C (59°F).

Data source: Temperature data for Arcos generated using information from the Copernicus Climate Change Service.

December Precipitation in Arcos

In Arcos, in December, the precipitation amount is 207 mm (8.1 in) spread over 22 days.

December Precipitation Trends in Arcos

The chart displays monthly precipitation patterns in Arcos, 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 Arcos, December typically receives around 207 mm (8.1 inches) of precipitation spread over approximately 22 days.

Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

December Humidity in Arcos

In Arcos in December humidity is 72%. With an average temperature of 23°C (74°F), this humidity feels like a warm, enveloping blanket that clings to the skin, making outdoor activities a challenge but offering a refreshing atmosphere for leisurely strolls in the shade.

December Average Humidity in Arcos

This chart illustrates the average monthly humidity levels in Arcos, 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 Arcos is approximately 72%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Arcos

In Arcos 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 Arcos.

Maximum UV Index Levels in Arcos for December

The chart shows the monthly maximum UV Index (UVI) for Arcos 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 Arcos typically reaches 16, which falls under the extreme exposure category.

Data source: Arcos 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 Arcos Compares to Other Months

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

This table compares monthly weather conditions in Arcos, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	24°C (76°F)	130 mm (5.1 inches)	85%	extreme
February Weather	23°C (74°F)	177 mm (7.0 inches)	87%	extreme
March Weather	24°C (75°F)	119 mm (4.7 inches)	87%	extreme
April Weather	22°C (73°F)	41 mm (1.6 inches)	80%	extreme
May Weather	20°C (68°F)	26 mm (1.0 inches)	74%	very high
June Weather	20°C (67°F)	8 mm (0.3 inches)	72%	high
July Weather	18°C (65°F)	2 mm (0.1 inches)	67%	very high
August Weather	20°C (69°F)	9 mm (0.4 inches)	58%	extreme
September Weather	24°C (75°F)	29 mm (1.2 inches)	49%	extreme
October Weather	24°C (76°F)	108 mm (4.2 inches)	36%	extreme
November Weather	23°C (74°F)	192 mm (7.5 inches)	65%	extreme
December Weather	23°C (74°F)	207 mm (8.1 inches)	72%	extreme