December Weather in Iacu, Brazil

Last updated: August 22, 2025

In December, the average temperature in Iacu, Brazil is a warm 26°C (79°F), with a minimum of 18°C (65°F) and a maximum reaching 37°C (99°F). Visitors can expect about 65 mm (2.6 in) of precipitation across 8 days, accompanied by an average humidity of 59%. Whether you're soaking up the sun or exploring indoors, this climate offers a delightful experience!

December Temperature in Iacu

In December in Iacu, the average temperature is 26°C (79°F), with maximums reaching up to 37°C (99°F) and minimums dropping as low as 18°C (65°F). This climate makes Iacu an ideal destination for travelers seeking warm weather and pleasant outdoor activities.

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

The chart illustrates December temperature patterns in Iacu, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Iacu, December typically has an average temperature of 26°C (79°F), with highs reaching up to 37°C (99°F) and lows dropping to around 18°C (65°F).

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

December Precipitation in Iacu

In Iacu in December, the total precipitation amount is 65 mm (2.6 in) spread over the course of 8 days.

December Precipitation Trends in Iacu

The chart displays monthly precipitation patterns in Iacu, 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 Iacu, December typically receives around 65 mm (2.6 inches) of precipitation spread over approximately 8 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 Iacu

In Iacu in December humidity is 59%. With average temperature 26°C (79°F), this humidity feels like a warm embrace that clings to your skin, making outdoor adventures feel sultry yet inviting as you explore the vibrant sights and sounds of the area.

December Average Humidity in Iacu

This chart illustrates the average monthly humidity levels in Iacu, 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 Iacu is approximately 59%, 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 Iacu

In Iacu 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 Iacu, you can check here.

Maximum UV Index Levels in Iacu for December

The chart shows the monthly maximum UV Index (UVI) for Iacu 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 Iacu typically reaches 14, which falls under the extreme exposure category.

Data source: Iacu 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 Iacu Compares to Other Months

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

This table compares monthly weather conditions in Iacu, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	27°C (80°F)	25 mm (1.0 inches)	73%	extreme
February Weather	27°C (82°F)	44 mm (1.7 inches)	80%	extreme
March Weather	27°C (81°F)	59 mm (2.3 inches)	89%	extreme
April Weather	26°C (79°F)	80 mm (3.2 inches)	88%	extreme
May Weather	25°C (77°F)	29 mm (1.1 inches)	85%	extreme
June Weather	24°C (75°F)	20 mm (0.8 inches)	85%	very high
July Weather	23°C (73°F)	20 mm (0.8 inches)	80%	very high
August Weather	23°C (74°F)	17 mm (0.7 inches)	76%	extreme
September Weather	24°C (76°F)	17 mm (0.7 inches)	70%	extreme
October Weather	26°C (79°F)	21 mm (0.8 inches)	63%	extreme
November Weather	26°C (79°F)	83 mm (3.3 inches)	58%	extreme
December Weather	26°C (79°F)	65 mm (2.6 inches)	59%	extreme