Argentina in September: where is it warmest?
In September, Córdoba, Argentina is the warmest place with 22 °C by day, Ushuaia the coolest with 4 °C. 6 of 10 destinations have good holiday weather.
All destinations in September, warmest first
Long-term averages for the month: daytime high, sea, sunshine and rainy days.
| Place | Score | Air | Sea | Sun | Rain days |
|---|---|---|---|---|---|
| Córdoba, Argentina | 93 | 22° | – | 7 h | 4 |
| Rosario | 88 | 21° | – | 7 h | 6 |
| Villa General Belgrano | 87 | 20° | – | 7 h | 7 |
| Mendoza | 92 | 19° | – | 8 h | 6 |
| Buenos Aires | 84 | 17° | 16° | 7 h | 6 |
| La Plata | 81 | 17° | – | 6 h | 6 |
| Mar del Plata | 59 | 15° | 11° | 3 h | 7 |
| Bariloche | 30 | 7° | – | 6 h | 9 |
| El Calafate | 30 | 5° | – | 6 h | 9 |
| Ushuaia | 9 | 4° | 6° | 4 h | 15 |
Argentina in September: quick answers
Argentina in September: where is it warmest?
The warmest places in September are Córdoba, Argentina (22 °C), Rosario (21 °C) and Villa General Belgrano (20 °C).
Argentina in September: where is the sea warmest?
The sea is warmest at Buenos Aires (16 °C), Mar del Plata (11 °C) and Ushuaia (6 °C).
Argentina in September: where is the weather best?
The best holiday weather in September – warm, sunny and dry – is in Córdoba, Argentina, Mendoza and Rosario.
Argentina month by month
Argentina: weather & best time to visit
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). Sources & licences