Buenos Aires weather in March
In March, Buenos Aires has an average high of 25 °C76 °F and an average low of 19 °C67 °F, with about 123 mm4.8 in of precipitation. It is the 4th warmest month of the year and the wettest.
How March compares with other months
Compared with February, March is 2 °C3.6 °F cooler on average. Compared with April, March is 3.3 °C5.9 °F warmer on average and wetter by 25 mm1.0 in. Daylight lasts about 12.4 hours around the middle of the month. Average relative humidity is 74% and the average cloud amount 43%.
Is March a good time to visit Buenos Aires?
March is not among the most comfortable months by our comfort score: it is fairly wet (123 mm4.8 in). The most comfortable months in Buenos Aires are November–January and April.
What to wear in March
For Buenos Aires 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 |
|---|---|---|---|
| Buenos Aires | 2576 | 1967 | 1234.8 |
| Berazategui | 2679 | 1660 | 1174.6 |
| Laferrere | 2780 | 1458 | 1184.7 |
| Merlo | 2780 | 1559 | 1224.8 |
| La Plata | 2679 | 1660 | 1174.6 |
| Montevideo | 2474 | 1865 | 1184.6 |
| San Nicolás de los Arroyos | 2882 | 1559 | 1445.7 |
| Rosario | 2882 | 1560 | 1485.8 |
| Tandil | 2476 | 1152 | 893.5 |
Nearby places that are more than 1 °C1.8 °F cooler: Berazategui, Laferrere, La Plata and Tandil.
Other months in Buenos Aires
- January28 °C82 °F / 22 °C71 °F
- February27 °C80 °F / 21 °C70 °F
- March25 °C76 °F / 19 °C67 °F
- April21 °C70 °F / 16 °C61 °F
- May17 °C63 °F / 13 °C55 °F
- June14 °C58 °F / 10 °C50 °F
- July13 °C56 °F / 9 °C48 °F
- August15 °C59 °F / 10 °C50 °F
- September17 °C62 °F / 12 °C53 °F
- October20 °C68 °F / 14 °C58 °F
- November23 °C74 °F / 17 °C63 °F
- December26 °C79 °F / 20 °C68 °F
Frequently asked questions
How warm is Buenos Aires in March?
In March the average high in Buenos Aires is 25 °C (76 °F) and the average low is 19 °C (67 °F).
Does it rain a lot in Buenos Aires in March?
On average about 123 mm (4.8 in) of precipitation falls in March; it ranks 1st of the 12 months.
Is March the warmest month in Buenos Aires?
No. The warmest month in Buenos Aires is January, with an average high of 28 °C (82 °F). The coldest month is July, with an average low of 9 °C (48 °F).
How long is the day in Buenos Aires in March?
In the middle of March the day in Buenos Aires lasts about 12.4 hours from sunrise to sunset. The value is calculated from the position of the city and the sun.
How humid is Buenos Aires in March?
The average relative humidity in March is about 74%. This is a long-term average for the whole day.
How cloudy is Buenos Aires in March?
On average about 43% 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.