March Weather in Rio, United States

Last updated: June 24, 2025

In March, the average temperature in Rio, United States is a comfortable 22°C (72°F). Temperatures can range from a chilly 11°C (53°F) to a warm 31°C (88°F). Expect 31 mm (1.2 in) of precipitation over about 5 days, complemented by an average humidity of 75%. 🌦️ Stay prepared for a mix of pleasant weather!

March Temperature in Rio

In March in Rio, the average temperature is 22°C (72°F). Maximum can reach 31°C (88°F) and minimum can be as low as 11°C (53°F). This pleasant climate makes it an ideal time for travelers to explore and enjoy outdoor activities.

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

The chart illustrates March temperature patterns in Rio, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Rio, March typically has an average temperature of 22°C (72°F), with highs reaching up to 31°C (88°F) and lows dropping to around 11°C (53°F).

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

March Precipitation in Rio

In Rio in March, the precipitation amount is 31 mm (1.2 in) spread over 5 days.

March Precipitation Trends in Rio

The chart displays monthly precipitation patterns in Rio, 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, March typically receives around 31 mm (1.2 inches) of precipitation spread over approximately 5 days.

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

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

March Humidity in Rio

In Rio in March, humidity is 75%. With an average temperature of 22°C (72°F), this humidity feels like a warm embrace, making outdoor activities enjoyable yet requiring travelers to stay hydrated and take breaks in shaded areas.

March Average Humidity in Rio

This chart illustrates the average monthly humidity levels in Rio, 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 is approximately 75%, 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

In Rio in March, the maximum UV index reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, you can check the Hourly UV Index in Rio.

Maximum UV Index Levels in Rio for March

The chart shows the monthly maximum UV Index (UVI) for Rio 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 typically reaches 10, which falls under the very high exposure category.

Data source: Rio 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 Compares to Other Months

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

This table compares monthly weather conditions in Rio, showing how March’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	20°C (68°F)	38 mm (1.5 inches)	83%	high
February Weather	22°C (72°F)	43 mm (1.7 inches)	80%	very high
March Weather	22°C (72°F)	31 mm (1.2 inches)	75%	very high
April Weather	24°C (76°F)	65 mm (2.6 inches)	68%	extreme
May Weather	26°C (79°F)	122 mm (4.8 inches)	65%	extreme
June Weather	27°C (81°F)	159 mm (6.3 inches)	73%	extreme
July Weather	28°C (83°F)	140 mm (5.5 inches)	77%	extreme
August Weather	28°C (83°F)	175 mm (6.9 inches)	80%	extreme
September Weather	28°C (82°F)	148 mm (5.8 inches)	83%	extreme
October Weather	27°C (80°F)	126 mm (5.0 inches)	83%	very high
November Weather	23°C (75°F)	81 mm (3.2 inches)	83%	high
December Weather	21°C (71°F)	49 mm (1.9 inches)	84%	moderate