Rio de Janeiro weather in March
In March, Rio de Janeiro has an average high of 28 °C83 °F and an average low of 24 °C74 °F, with about 173 mm6.8 in of precipitation. It is the 3rd warmest month of the year and ranks 4th for precipitation.
How March compares with other months
Compared with February, March is about the same temperature and wetter by 20 mm0.8 in. Compared with April, March is 1.1 °C2 °F warmer on average and wetter by 72 mm2.8 in. Daylight lasts about 12.3 hours around the middle of the month. Average relative humidity is 83% and the average cloud amount 66%.
Is March a good time to visit Rio de Janeiro?
March is not among the most comfortable months by our comfort score: it is hot (average high 28 °C83 °F), it is fairly wet (173 mm6.8 in) and it is humid (83%). The most comfortable months in Rio de Janeiro are May–September.
What to wear in March
For Rio de Janeiro in March, pack light summer clothes such as T-shirts, shorts or light dresses and an umbrella or light rain jacket.
March in nearby places
| Place | High °C°F | Low °C°F | Precip. mmin |
|---|---|---|---|
| Rio de Janeiro | 2883 | 2474 | 1736.8 |
| Nova Iguaçu | 2983 | 2374 | 1827.2 |
| Maricá | 2883 | 2474 | 1736.8 |
| Itaboraí | 3187 | 2171 | 1576.2 |
| Queimados | 3289 | 2170 | 1576.2 |
| Petrópolis | 2678 | 1662 | 1576.2 |
| Araruama | 2883 | 2374 | 1606.3 |
| Nova Friburgo | 2577 | 1762 | 1536.0 |
| Volta Redonda | 2984 | 2068 | 1676.6 |
Nearby places that are more than 1 °C1.8 °F cooler: Petrópolis, Nova Friburgo and Volta Redonda.
Other months in Rio de Janeiro
- January29 °C84 °F / 24 °C75 °F
- February29 °C84 °F / 24 °C75 °F
- March28 °C83 °F / 24 °C74 °F
- April27 °C81 °F / 22 °C72 °F
- May25 °C77 °F / 20 °C69 °F
- June25 °C77 °F / 19 °C66 °F
- July24 °C76 °F / 18 °C65 °F
- August25 °C77 °F / 18 °C65 °F
- September26 °C78 °F / 19 °C66 °F
- October26 °C80 °F / 20 °C68 °F
- November27 °C80 °F / 21 °C70 °F
- December28 °C82 °F / 23 °C73 °F
Frequently asked questions
How warm is Rio de Janeiro in March?
In March the average high in Rio de Janeiro is 28 °C (83 °F) and the average low is 24 °C (74 °F).
Does it rain a lot in Rio de Janeiro in March?
On average about 173 mm (6.8 in) of precipitation falls in March; it ranks 4th of the 12 months.
Is March the warmest month in Rio de Janeiro?
No. The warmest month in Rio de Janeiro is February, with an average high of 29 °C (84 °F). The coldest month is August, with an average low of 18 °C (65 °F).
How long is the day in Rio de Janeiro in March?
In the middle of March the day in Rio de Janeiro lasts about 12.3 hours from sunrise to sunset. The value is calculated from the position of the city and the sun.
How humid is Rio de Janeiro in March?
The average relative humidity in March is about 83%. Combined with warm days, it can feel muggy.
How cloudy is Rio de Janeiro in March?
On average about 66% of the sky is covered by cloud in March. This is the mean cloud amount from satellite data, not the number of sunny days.
About this data
All figures are 25-year averages (January 2001 – December 2025) from the NASA POWER project. Temperature, humidity, wind and precipitation come from the MERRA-2 reanalysis (precipitation is the bias-corrected MERRA-2 product), cloud and solar values from CERES satellite data. They describe a grid cell of roughly 50–70 km, not a single weather station, so they can differ from airport records — most of all on coasts, in mountains and for rainfall. Average highs and lows are the monthly mean temperature plus/minus half of the average daily temperature range. Counts of rainy days are not part of this dataset.
The grid cell’s average elevation is 81 m, while Rio de Janeiro lies at about 12 m. Temperatures on this page were therefore adjusted by +0.4 °C0.8 °F using the standard lapse rate of 6.5 °C per 1,000 m.