January Weather in Rosario do Sul, Brazil

Last updated: August 22, 2025

In Rosario do Sul, Brazil, the average temperature in January hovers around 26°C (78°F), with a minimum of 13°C (56°F) and a maximum reaching up to 39°C (103°F). Expect about 142 mm (5.6 in) of precipitation over 10 days, contributing to a moderately humid atmosphere at an average of 63% humidity.

January Temperature in Rosario do Sul

In January in Rosario do Sul, the average temperature is 26°C (78°F). Maximums can reach 39°C (103°F), while minimums can drop as low as 13°C (56°F). Travelers should prepare for warm days and cooler evenings, making it ideal for a variety of outdoor activities.

January Weather in Rosario do Sul: Daily Temperature Highs, Lows, and Averages

The chart illustrates January temperature patterns in Rosario 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 Rosario do Sul, January typically has an average temperature of 26°C (78°F), with highs reaching up to 39°C (103°F) and lows dropping to around 13°C (56°F).

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

January Precipitation in Rosario do Sul

In Rosario do Sul in January, the total precipitation amount is 142 mm (5.6 in) over the course of 10 days.

January Precipitation Trends in Rosario do Sul

The chart displays monthly precipitation patterns in Rosario do Sul, with values for each month alongside January’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how January’s conditions compare to those of other months. In Rosario do Sul, January typically receives around 142 mm (5.6 inches) of precipitation spread over approximately 10 days.

Data source: Precipitation data for January generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

January Humidity in Rosario do Sul

In Rosario do Sul in January humidity is 63%. With an average temperature of 26°C (78°F), this humidity feels like a warm, tropical embrace, making outdoor activities pleasantly refreshing yet slightly sticky, perfect for leisurely strolls and beachside adventures.

January Average Humidity in Rosario do Sul

This chart illustrates the average monthly humidity levels in Rosario do Sul, with January’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In January, average humidity in Rosario do Sul is approximately 63%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for January generated using information from the Copernicus Climate Change Service.

January UV Index in Rosario do Sul

In Rosario do Sul in January, 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 Rosario do Sul.

Maximum UV Index Levels in Rosario do Sul for January

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

Data source: Rosario do Sul January 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 January Weather in Rosario do Sul Compares to Other Months

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

This table compares monthly weather conditions in Rosario do Sul, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	26°C (78°F)	142 mm (5.6 inches)	63%	extreme
February Weather	24°C (76°F)	103 mm (4.0 inches)	58%	extreme
March Weather	23°C (73°F)	118 mm (4.6 inches)	68%	extreme
April Weather	20°C (69°F)	70 mm (2.8 inches)	78%	very high
May Weather	16°C (61°F)	147 mm (5.8 inches)	79%	high
June Weather	14°C (58°F)	111 mm (4.4 inches)	78%	moderate
July Weather	13°C (56°F)	91 mm (3.6 inches)	70%	moderate
August Weather	15°C (59°F)	97 mm (3.8 inches)	55%	high
September Weather	17°C (63°F)	169 mm (6.7 inches)	62%	very high
October Weather	20°C (67°F)	160 mm (6.3 inches)	64%	extreme
November Weather	22°C (72°F)	104 mm (4.1 inches)	64%	extreme
December Weather	25°C (76°F)	86 mm (3.4 inches)	73%	extreme