December Weather in Cacu, Brazil

Last updated: August 22, 2025

In December, the average temperature in Cacu, Brazil hovers around 26°C (78°F). Daytime highs can reach up to a sweltering 37°C (99°F), while nights cool down to a minimum of 18°C (65°F). Be prepared for some rain, as 182 mm (7.2 in) of precipitation is expected over approximately 20 days, contributing to the region's average humidity of 84%.

December Temperature in Cacu

In December in Cacu, the average temperature is 26°C (78°F). Maximums can reach 37°C (99°F) while minimums can drop to as low as 18°C (65°F). This makes it an ideal time for travelers seeking warm weather while enjoying pleasantly mild evenings.

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

The chart illustrates December temperature patterns in Cacu, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Cacu, December typically has an average temperature of 26°C (78°F), with highs reaching up to 37°C (99°F) and lows dropping to around 18°C (65°F).

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

December Precipitation in Cacu

In Cacu in December, the total precipitation amount is 182 mm (7.2 in) over a span of 20 days.

December Precipitation Trends in Cacu

The chart displays monthly precipitation patterns in Cacu, 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 Cacu, December typically receives around 182 mm (7.2 inches) of precipitation spread over approximately 20 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 Cacu

In Cacu in December, humidity is 84%. With an average temperature of 26°C (78°F), this humidity feels like walking through a warm, moist blanket, making outdoor activities feel heavy and exhausting for travelers.

December Average Humidity in Cacu

This chart illustrates the average monthly humidity levels in Cacu, 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 Cacu is approximately 84%, 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 Cacu

In Cacu 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 Cacu.

Maximum UV Index Levels in Cacu for December

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

Data source: Cacu 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 Cacu Compares to Other Months

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

This table compares monthly weather conditions in Cacu, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	25°C (78°F)	143 mm (5.6 inches)	86%	extreme
February Weather	25°C (78°F)	173 mm (6.8 inches)	87%	extreme
March Weather	25°C (78°F)	127 mm (5.0 inches)	87%	extreme
April Weather	24°C (76°F)	68 mm (2.7 inches)	81%	extreme
May Weather	22°C (72°F)	21 mm (0.8 inches)	71%	very high
June Weather	22°C (72°F)	3 mm (0.1 inches)	63%	very high
July Weather	21°C (70°F)	1 mm (0.1 inches)	57%	very high
August Weather	24°C (75°F)	10 mm (0.4 inches)	47%	extreme
September Weather	27°C (82°F)	21 mm (0.8 inches)	39%	extreme
October Weather	27°C (81°F)	100 mm (3.9 inches)	34%	extreme
November Weather	26°C (78°F)	193 mm (7.6 inches)	64%	extreme
December Weather	26°C (78°F)	182 mm (7.2 inches)	84%	extreme