El Niño in Buenos Aires
During El Niño, Buenos Aires gets on average 35% more rain in June–August than in neutral years (233 mm vs 173 mm).
Weather in Buenos Aires: next 7 days
Buenos Aires
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Weather forecast: MET Norway (CC BY 4.0), updated every hour. For official warnings, follow your national weather service.
El Niño is active right now: the El Niño columns show what Buenos Aires typically sees in this phase.
Monthly rainfall by phase
El NiñoNeutralLa Niña
Month by month
| Month | El Niño | Neutral | La Niña | Change El Niño | Temp. El Niño / neutral |
|---|---|---|---|---|---|
| January | 91 mm | 122 mm | 102 mm | -25% | 24.3 / 24.4 °C |
| February | 112 mm | 109 mm | 120 mm | +3% | 24.0 / 23.5 °C |
| March | 108 mm | 138 mm | 106 mm | -22% | 22.3 / 22.2 °C |
| April | 110 mm | 102 mm | 89 mm | +8% | 18.8 / 18.6 °C |
| May | 72 mm | 84 mm | 87 mm | -14% | 15.1 / 15.4 °C |
| June | 80 mm | 45 mm | 48 mm | +77% | 12.3 / 12.0 °C |
| July | 74 mm | 55 mm | 72 mm | +35% | 11.5 / 10.8 °C |
| August | 78 mm | 72 mm | 34 mm | +9% | 13.0 / 12.4 °C |
| September | 71 mm | 78 mm | 67 mm | -9% | 14.2 / 13.9 °C |
| October | 119 mm | 112 mm | 94 mm | +7% | 17.0 / 17.2 °C |
| November | 116 mm | 146 mm | 68 mm | -21% | 20.0 / 19.8 °C |
| December | 136 mm | 108 mm | 62 mm | +26% | 22.7 / 22.5 °C |
NASA POWER (MERRA-2), 1981–2025, classified by NOAA ONI. Averages, not a forecast.
Frequently asked questions
How does El Niño affect Buenos Aires?
During El Niño, Buenos Aires gets on average 35% more rain in June–August than in neutral years (233 mm vs 173 mm).
And La Niña?
In June–August, La Niña years average 154 mm, compared with 173 mm in neutral years.
Where does this data come from?
Monthly rainfall and temperature from NASA POWER (MERRA-2 reanalysis, 1981–2025) at -34.6, -58.38, classified by NOAA's Oceanic Niño Index for each month. These are averages; each event is different.