El Niño in Rosario
During El Niño, Rosario gets on average 34% more rain in June–August than in neutral years (121 mm vs 90 mm).
Weather in Rosario: next 7 days
Rosario
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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 Rosario 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 | 124 mm | 130 mm | 107 mm | -5% | 25.6 / 26.1 °C |
| February | 139 mm | 105 mm | 136 mm | +33% | 24.4 / 24.3 °C |
| March | 126 mm | 155 mm | 120 mm | -19% | 22.3 / 22.2 °C |
| April | 114 mm | 111 mm | 127 mm | +2% | 18.0 / 17.8 °C |
| May | 56 mm | 63 mm | 51 mm | -12% | 13.9 / 14.1 °C |
| June | 41 mm | 25 mm | 19 mm | +63% | 11.3 / 10.8 °C |
| July | 38 mm | 23 mm | 22 mm | +62% | 10.9 / 9.9 °C |
| August | 42 mm | 42 mm | 10 mm | +1% | 13.0 / 12.4 °C |
| September | 53 mm | 52 mm | 48 mm | +2% | 15.2 / 14.6 °C |
| October | 110 mm | 129 mm | 100 mm | -15% | 18.6 / 18.8 °C |
| November | 125 mm | 122 mm | 91 mm | +3% | 21.5 / 21.5 °C |
| December | 176 mm | 145 mm | 77 mm | +21% | 24.1 / 24.3 °C |
NASA POWER (MERRA-2), 1981–2025, classified by NOAA ONI. Averages, not a forecast.
Frequently asked questions
How does El Niño affect Rosario?
During El Niño, Rosario gets on average 34% more rain in June–August than in neutral years (121 mm vs 90 mm).
And La Niña?
In June–August, La Niña years average 51 mm, compared with 90 mm in neutral years.
Where does this data come from?
Monthly rainfall and temperature from NASA POWER (MERRA-2 reanalysis, 1981–2025) at -32.95, -60.64, classified by NOAA's Oceanic Niño Index for each month. These are averages; each event is different.