Climate averages 1991–2020
Buenos Aires weather
in March.
A warm, wet month: the 4th warmest and the 9th driest of the year. Meets the pleasant-weather rule
Long-term climate patterns, not a forecast for a particular trip.
March is a warm month in Buenos Aires: daytime highs average 24.5°C and nights cool to about 18.1°C. By daytime temperature it is the 4th warmest of the 12 months.
Expect about 96 mm of rain on roughly 8 days, which makes March a wet month (the 9th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 19 min on an average March day.
The nearest other city in this atlas is Avellaneda (5 km away). In March its highs average 24.7°C, about as warm as Buenos Aires, with 88 mm of rain.
Among the 67 cities listed in Argentina, Buenos Aires ranks 55th of 67 for the warmest March highs and 41st of 67 for the driest March (rainfall, lowest first). The mean March high of those 67 cities is 25.6°C; Buenos Aires is 1.2°C cooler than that mean.
From March to April, average highs fall by 3.6°C to 20.9°C, and monthly rainfall rises from 96 mm to 102 mm.
The annual picture
March in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Buenos Aires climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 27.6°C20.3°C | 20.3°C | 83 | 6.9 | 14.214 h |
| February | 26.4°C19.7°C | 19.7°C | 99 | 8.1 | 13.413 h |
| March, selected | 24.5°C18.1°C | 18.1°C | 96 | 7.6 | 12.312 h |
| April | 20.9°C14.6°C | 14.6°C | 102 | 8.1 | 11.211 h |
| May | 17.2°C11.5°C | 11.5°C | 72 | 6.8 | 10.310 h |
| June | 14.3°C8.6°C | 8.6°C | 74 | 7.7 | 9.910 h |
| July | 13.3°C7.5°C | 7.5°C | 74 | 7.1 | 10.110 h |
| August | 15.5°C8.8°C | 8.8°C | 71 | 6.6 | 10.811 h |
| September | 17.3°C10.4°C | 10.4°C | 80 | 7.1 | 11.812 h |
| October | 20.2°C13.3°C | 13.3°C | 119 | 9.8 | 12.913 h |
| November | 23.4°C15.9°C | 15.9°C | 95 | 8.2 | 13.914 h |
| December | 26.3°C18.6°C | 18.6°C | 87 | 8.1 | 14.414 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
March in nearby cities
- Avellaneda in MarchArgentina · 5 kmHigh 24.7°C · Low 17.9°C · 88 mm rain
- Lomas de Zamora in MarchArgentina · 16 kmHigh 25.0°C · Low 17.3°C · 85 mm rain
- Quilmes in MarchArgentina · 16 kmHigh 24.7°C · Low 17.6°C · 88 mm rain
- Isidro Casanova in MarchArgentina · 22 kmHigh 25.4°C · Low 16.9°C · 85 mm rain
- Berazategui in MarchArgentina · 23 kmHigh 24.4°C · Low 18.0°C · 88 mm rain
- Laferrere in MarchArgentina · 24 kmHigh 25.5°C · Low 16.8°C · 85 mm rain
- Don Torcuato in MarchArgentina · 26 kmHigh 25.1°C · Low 17.4°C · 91 mm rain
- Bella Vista in MarchArgentina · 29 kmHigh 25.6°C · Low 16.8°C · 91 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Buenos Aires) is explained once on the Buenos Aires year overview and on the Sources, method and limits page.