December Weather in Sao Joao de Meriti, Brazil

Last updated: August 22, 2025

The average temperature in Sao Joao de Meriti, Brazil during December is 25°C (78°F), with a range that can drop to a comfortable 16°C (61°F) and soar up to a hot 36°C (97°F). Expect about 234 mm (9.2 in) of precipitation spread over 22 days, contributing to an average humidity of 75%. Perfect for those who enjoy a warm, tropical ambiance!

December Temperature in Sao Joao de Meriti

In December in Sao Joao de Meriti, the average temperature is 25°C (78°F). Maximums can reach 36°C (97°F), and minimums can be as low as 16°C (61°F). This pleasant climate makes Sao Joao de Meriti an ideal destination for travelers seeking warmth and outdoor activities.

December Weather in Sao Joao de Meriti: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Sao Joao de Meriti, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Sao Joao de Meriti, December typically has an average temperature of 25°C (78°F), with highs reaching up to 36°C (97°F) and lows dropping to around 16°C (61°F).

Data source: Temperature data for Sao Joao de Meriti generated using information from the Copernicus Climate Change Service.

December Precipitation in Sao Joao de Meriti

In Sao Joao de Meriti in December, the precipitation amount is 234 mm (9.2 in) over the course of 22 days.

December Precipitation Trends in Sao Joao de Meriti

The chart displays monthly precipitation patterns in Sao Joao de Meriti, 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 Sao Joao de Meriti, December typically receives around 234 mm (9.2 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 Sao Joao de Meriti

In Sao Joao de Meriti in December, humidity is 75%. With an average temperature of 25°C (78°F), this humidity feels like a warm blanket enveloping you, making travel feel sticky and heavy, but also vibrant and alive, as the air is saturated with the scents of the surroundings and the energy of the environment.

December Average Humidity in Sao Joao de Meriti

This chart illustrates the average monthly humidity levels in Sao Joao de Meriti, 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 Sao Joao de Meriti is approximately 75%, 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 Sao Joao de Meriti

In Sao Joao de Meriti in December, the maximum UV index reaches an alarming 15, which falls into the extreme Exposure Category. With a time to burn of just 10 minutes, it's crucial to take precautions. For detailed information, you can check the Hourly UV Index in Sao Joao de Meriti.

Maximum UV Index Levels in Sao Joao de Meriti for December

The chart shows the monthly maximum UV Index (UVI) for Sao Joao de Meriti 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 Sao Joao de Meriti typically reaches 15, which falls under the extreme exposure category.

Data source: Sao Joao de Meriti 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 Sao Joao de Meriti Compares to Other Months

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

This table compares monthly weather conditions in Sao Joao de Meriti, 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 (81°F)	179 mm (7.1 inches)	85%	extreme
February Weather	26°C (79°F)	242 mm (9.5 inches)	85%	extreme
March Weather	26°C (79°F)	207 mm (8.1 inches)	86%	extreme
April Weather	24°C (75°F)	103 mm (4.0 inches)	83%	very high
May Weather	22°C (71°F)	71 mm (2.8 inches)	81%	high
June Weather	21°C (71°F)	45 mm (1.8 inches)	80%	high
July Weather	20°C (68°F)	35 mm (1.4 inches)	76%	high
August Weather	20°C (69°F)	69 mm (2.7 inches)	73%	very high
September Weather	23°C (74°F)	67 mm (2.6 inches)	68%	extreme
October Weather	24°C (75°F)	129 mm (5.1 inches)	61%	extreme
November Weather	24°C (75°F)	210 mm (8.3 inches)	72%	extreme
December Weather	25°C (78°F)	234 mm (9.2 inches)	75%	extreme