December Weather in Riachao, Brazil

Last updated: August 22, 2025

In December, the average temperature in Riachao, Brazil is a warm 26°C (79°F), with temperatures fluctuating between a pleasant 20°C (69°F) and a balmy 34°C (94°F). Visitors can expect 204 mm (8.0 in) of precipitation spread over 21 days, accompanied by an average humidity level of 76%. Whether you're soaking up the sun or dodging the rain, prepare for a truly tropical experience!

December Temperature in Riachao

In December in Riachao, the average temperature is 26°C (79°F). Maximums can reach 34°C (94°F), and minimums can be as low as 20°C (69°F). This pleasant climate makes it an ideal time for travelers to explore and enjoy all that Riachao has to offer.

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

The chart illustrates December temperature patterns in Riachao, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Riachao, December typically has an average temperature of 26°C (79°F), with highs reaching up to 34°C (94°F) and lows dropping to around 20°C (69°F).

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

December Precipitation in Riachao

In Riachao in December, the precipitation amount is 204 mm (8.0 in) spread over 21 days.

December Precipitation Trends in Riachao

The chart displays monthly precipitation patterns in Riachao, 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 Riachao, December typically receives around 204 mm (8.0 inches) of precipitation spread over approximately 21 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 Riachao

In Riachao in December humidity is 76%. With an average temperature of 26°C (79°F), this humidity feels like a heavy blanket wrapping around you, making outdoor activities challenging and requiring frequent breaks to hydrate and cool down during your travels.

December Average Humidity in Riachao

This chart illustrates the average monthly humidity levels in Riachao, 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 Riachao is approximately 76%, 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 Riachao

In Riachao 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 Riachao, you can check here.

Maximum UV Index Levels in Riachao for December

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

Data source: Riachao 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 Riachao Compares to Other Months

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

This table compares monthly weather conditions in Riachao, 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)	186 mm (7.3 inches)	90%	extreme
February Weather	25°C (78°F)	309 mm (12.2 inches)	91%	extreme
March Weather	26°C (78°F)	272 mm (10.7 inches)	93%	extreme
April Weather	26°C (79°F)	180 mm (7.1 inches)	92%	extreme
May Weather	27°C (81°F)	34 mm (1.4 inches)	86%	extreme
June Weather	27°C (80°F)	3 mm (0.1 inches)	76%	extreme
July Weather	27°C (80°F)	3 mm (0.1 inches)	61%	extreme
August Weather	28°C (83°F)	3 mm (0.1 inches)	50%	extreme
September Weather	29°C (85°F)	6 mm (0.2 inches)	41%	extreme
October Weather	28°C (83°F)	62 mm (2.4 inches)	37%	extreme
November Weather	26°C (80°F)	176 mm (6.9 inches)	48%	extreme
December Weather	26°C (79°F)	204 mm (8.0 inches)	76%	extreme