December Weather in Sao Mateus do Sul, Brazil

Last updated: August 22, 2025

In December, the average temperature in Sao Mateus do Sul, Brazil is a pleasant 22°C (71°F), making it a perfect month to explore. However, temperatures can vary, with minima dipping to 11°C (52°F) and maxima soaring to 35°C (96°F). Be prepared for some rain as well, with 141 mm (5.6 in) of precipitation expected over 16 days. Don't forget to stay hydrated, as the average humidity is quite high at 86%!

December Temperature in Sao Mateus do Sul

In December in Sao Mateus do Sul, the average temperature is 22°C (71°F). Maximums can reach up to 35°C (96°F), while minimums can drop as low as 11°C (52°F). This varying climate makes Sao Mateus do Sul a great destination for travelers who enjoy warm weather with cooler evenings.

December Weather in Sao Mateus do Sul: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Sao Mateus do Sul, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Sao Mateus do Sul, December typically has an average temperature of 22°C (71°F), with highs reaching up to 35°C (96°F) and lows dropping to around 11°C (52°F).

Data source: Temperature data for Sao Mateus do Sul generated using information from the Copernicus Climate Change Service.

December Precipitation in Sao Mateus do Sul

In Sao Mateus do Sul in December, the precipitation amount is 141 mm (5.6 in) over the course of 16 days.

December Precipitation Trends in Sao Mateus do Sul

The chart displays monthly precipitation patterns in Sao Mateus do Sul, 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 Mateus do Sul, December typically receives around 141 mm (5.6 inches) of precipitation spread over approximately 16 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 Mateus do Sul

In Sao Mateus do Sul in December humidity is 86%. With an average temperature of 22°C (71°F), this humidity feels like a heavy blanket wrapping around you, making outdoor activities feel muggy and draining.

December Average Humidity in Sao Mateus do Sul

This chart illustrates the average monthly humidity levels in Sao Mateus do Sul, 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 Mateus do Sul is approximately 86%, 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 Mateus do Sul

In Sao Mateus do Sul 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 Mateus do Sul.

Maximum UV Index Levels in Sao Mateus do Sul for December

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

Data source: Sao Mateus do Sul 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 Mateus do Sul Compares to Other Months

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

This table compares monthly weather conditions in Sao Mateus do Sul, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	22°C (72°F)	136 mm (5.3 inches)	85%	extreme
February Weather	22°C (71°F)	120 mm (4.7 inches)	80%	extreme
March Weather	21°C (70°F)	102 mm (4.0 inches)	80%	extreme
April Weather	19°C (66°F)	50 mm (2.0 inches)	77%	extreme
May Weather	16°C (61°F)	97 mm (3.8 inches)	76%	very high
June Weather	15°C (59°F)	121 mm (4.8 inches)	74%	high
July Weather	14°C (57°F)	22 mm (0.9 inches)	66%	high
August Weather	15°C (59°F)	84 mm (3.3 inches)	57%	very high
September Weather	19°C (66°F)	71 mm (2.8 inches)	58%	extreme
October Weather	19°C (66°F)	152 mm (6.0 inches)	60%	extreme
November Weather	20°C (68°F)	111 mm (4.4 inches)	78%	extreme
December Weather	22°C (71°F)	141 mm (5.6 inches)	86%	extreme