January Weather in Arroio Grande, Brazil

Last updated: August 22, 2025

In January, the average temperature in Arroio Grande, Brazil hovers around 24°C (76°F), making it a pleasant time to visit. Expect temperatures to dip as low as 14°C (58°F) and soar up to a sizzling 37°C (99°F). With average humidity at a comfortable 71%, you might want to bring along your umbrella—135 mm (5.3 in) of precipitation is expected over 11 days. Enjoy the perfect blend of warmth and occasional rain during this vibrant month!

January Temperature in Arroio Grande

In January in Arroio Grande, the average temperature is 24°C (76°F). Maximum can reach 37°C (99°F) and minimum can be as low as 14°C (58°F). This pleasant climate makes Arroio Grande an ideal destination for travelers seeking a warm getaway.

January Weather in Arroio Grande: Daily Temperature Highs, Lows, and Averages

The chart illustrates January temperature patterns in Arroio Grande, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Arroio Grande, January typically has an average temperature of 24°C (76°F), with highs reaching up to 37°C (99°F) and lows dropping to around 14°C (58°F).

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

January Precipitation in Arroio Grande

In Arroio Grande in January, the precipitation amount is 135 mm (5.3 in) over the course of 11 days.

January Precipitation Trends in Arroio Grande

The chart displays monthly precipitation patterns in Arroio Grande, 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 Arroio Grande, January typically receives around 135 mm (5.3 inches) of precipitation spread over approximately 11 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 Arroio Grande

In Arroio Grande in January humidity is 71%. With an average temperature of 24°C (76°F), this humidity feels like a warm, tropical embrace, making it essential to stay hydrated while exploring, as the air is thick and can leave you feeling sticky and slightly tired after even short excursions.

January Average Humidity in Arroio Grande

This chart illustrates the average monthly humidity levels in Arroio Grande, 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 Arroio Grande is approximately 71%, 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 Arroio Grande

In Arroio Grande in January, 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 Arroio Grande, you can check here.

Maximum UV Index Levels in Arroio Grande for January

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

Data source: Arroio Grande 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 Arroio Grande Compares to Other Months

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

This table compares monthly weather conditions in Arroio Grande, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	24°C (76°F)	135 mm (5.3 inches)	71%	extreme
February Weather	23°C (74°F)	98 mm (3.9 inches)	74%	extreme
March Weather	22°C (72°F)	74 mm (2.9 inches)	76%	extreme
April Weather	20°C (68°F)	79 mm (3.1 inches)	81%	very high
May Weather	16°C (61°F)	88 mm (3.5 inches)	87%	moderate
June Weather	14°C (57°F)	101 mm (4.0 inches)	86%	moderate
July Weather	13°C (55°F)	112 mm (4.4 inches)	81%	moderate
August Weather	14°C (57°F)	119 mm (4.7 inches)	78%	high
September Weather	16°C (61°F)	153 mm (6.0 inches)	82%	very high
October Weather	18°C (64°F)	135 mm (5.3 inches)	82%	extreme
November Weather	20°C (69°F)	80 mm (3.1 inches)	79%	extreme
December Weather	22°C (72°F)	72 mm (2.9 inches)	77%	extreme