March Weather in Rio Grande, Brazil

Last updated: August 22, 2025

In March, the average temperature in Rio Grande, Brazil is a pleasant 23°C (73°F), with a minimum dipping to 18°C (64°F) and reaching a maximum of 29°C (85°F). Be prepared for some rain, as the area experiences about 87 mm (3.4 in) of precipitation over 12 days. Additionally, the average humidity is a notable 81%, ensuring a tropical feel throughout the month.

March Temperature in Rio Grande

In March in Rio Grande, the average temperature is 23°C (73°F), with maximums reaching 29°C (85°F) and minimums dropping as low as 18°C (64°F). This makes it a perfect time for travelers to enjoy outdoor activities and explore the vibrant local culture.

March Weather in Rio Grande: Daily Temperature Highs, Lows, and Averages

The chart illustrates March temperature patterns in Rio Grande, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Rio Grande, March typically has an average temperature of 23°C (73°F), with highs reaching up to 29°C (85°F) and lows dropping to around 18°C (64°F).

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

March Precipitation in Rio Grande

In Rio Grande in March, the precipitation amount is 87 mm (3.4 in) over the course of 12 days.

March Precipitation Trends in Rio Grande

The chart displays monthly precipitation patterns in Rio Grande, with values for each month alongside March’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how March’s conditions compare to those of other months. In Rio Grande, March typically receives around 87 mm (3.4 inches) of precipitation spread over approximately 12 days.

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

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Millimeters (mm) Inches (in)

March Humidity in Rio Grande

In Rio Grande in March, humidity is 81%. With an average temperature of 23°C (73°F), this humidity feels like a heavy blanket wrapping around you, making every step feel more laborious while traveling and causing you to constantly seek out shade or a cool breeze for relief.

March Average Humidity in Rio Grande

This chart illustrates the average monthly humidity levels in Rio Grande, with March’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In March, average humidity in Rio Grande is approximately 81%, offering insight into how humid the weather typically is during this month.

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

March UV Index in Rio Grande

In Rio Grande in March, the maximum UV index is 12, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, underscoring the importance of sun protection. For detailed information, you can check the Hourly UV Index in Rio Grande.

Maximum UV Index Levels in Rio Grande for March

The chart shows the monthly maximum UV Index (UVI) for Rio Grande in March, 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 March, the maximum UV index in Rio Grande typically reaches 12, which falls under the extreme exposure category.

Data source: Rio Grande March 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 March Weather in Rio Grande Compares to Other Months

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

This table compares monthly weather conditions in Rio Grande, showing how March’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	24°C (75°F)	85 mm (3.3 inches)	79%	extreme
February Weather	24°C (75°F)	75 mm (2.9 inches)	81%	extreme
March Weather	23°C (73°F)	87 mm (3.4 inches)	81%	extreme
April Weather	21°C (70°F)	65 mm (2.6 inches)	80%	very high
May Weather	18°C (64°F)	97 mm (3.8 inches)	82%	moderate
June Weather	15°C (60°F)	99 mm (3.9 inches)	81%	moderate
July Weather	14°C (57°F)	111 mm (4.4 inches)	78%	moderate
August Weather	14°C (58°F)	100 mm (3.9 inches)	80%	high
September Weather	16°C (61°F)	144 mm (5.7 inches)	84%	very high
October Weather	18°C (65°F)	131 mm (5.2 inches)	84%	extreme
November Weather	20°C (68°F)	78 mm (3.1 inches)	82%	extreme
December Weather	22°C (71°F)	77 mm (3.0 inches)	82%	extreme