Buenos Aires weather in March
Temperature, sea and sunshine in March: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in March
Excellent
Best time to visit: September – May
What is the weather like in Buenos Aires in March?
In March, Buenos Aires is warm: daytime highs average 25 °C, and nights cool down to about 18 °C. The sea averages 23.8 °C – pleasant for swimming. The sun shines for around 8 hours a day. Rain falls on about 8 days, adding up to 99 mm. All in all, March is an excellent month for a holiday in Buenos Aires.
March compared
How the weather changes from February to April. Tap a month to open it.
| FebruaryFeb | MarchMar | AprilApr | |
|---|---|---|---|
| Score | 89 | 87 | 83 |
| Day | 27° | 25° | 21° |
| Night | 20° | 18° | 15° |
| Sea | 25° | 24° | 21° |
| Sun | 9 h | 8 h | 6 h |
| Rain days | 9 | 8 | 8 |
More details for March
- Daylight
- 12 h 22 min06:52 – 19:14
- UV index
- 8 · very highclear sky, noon (estimate)All months
- Muggy days
- 11 daysdew point 18 °C or more
- Wind
- 18 km/haverage daily peak
- Cloud cover
- 42 %on average
- Hot days
- 1 day30 °C or more
- Time zone
- UTC−3America/Argentina/Buenos_Aires
How the score comes together
- Temperatureweight 50 %100 %
- Sunshineweight 20 %77 %
- Few rainy daysweight 30 %71 %
Each factor is rated from 0 to 100 % and weighted for the travel style “City break”.
What to pack in March
- Swimwear
- Sunscreen
- Sunglasses & sun hat
- Rain jacket or umbrella
Buenos Aires in March: quick answers
Is Buenos Aires hot in March?
Warm rather than hot: in March, daytime highs in Buenos Aires average 25 °C and nights cool to about 18 °C. On about 1 days the thermometer climbs to 30 °C or more.
Can you swim in Buenos Aires in March?
Yes. In March the sea averages 23.8 °C – pleasant for swimming.
Does it rain much in Buenos Aires in March?
Rain falls on about 8 days, adding up to 99 mm.
Buenos Aires month by month
The whole year in Buenos AiresAll destinations: ArgentinaWhere to go in MarchSea temperature in March
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0)