Argentina in January: where is it warmest?
In January, Rosario is the warmest place with 30 °C by day, Ushuaia the coolest with 12 °C. 8 of 10 destinations have good holiday weather.
All destinations in January, warmest first
Long-term averages for the month: daytime high, sea, sunshine and rainy days.
| Place | Score | Air | Sea | Sun | Rain days |
|---|---|---|---|---|---|
| Rosario | 71 | 30° | – | 10 h | 8 |
| Córdoba, Argentina | 70 | 29° | – | 8 h | 10 |
| Mendoza | 58 | 29° | – | 10 h | 9 |
| Buenos Aires | 87 | 28° | 26° | 9 h | 8 |
| La Plata | 87 | 28° | – | 10 h | 8 |
| Villa General Belgrano | 62 | 27° | – | 8 h | 15 |
| Mar del Plata | 82 | 25° | 20° | 6 h | 8 |
| Bariloche | 100 | 20° | – | 11 h | 4 |
| El Calafate | 67 | 14° | – | 9 h | 12 |
| Ushuaia | 8 | 12° | 9° | 5 h | 24 |
Argentina in January: quick answers
Argentina in January: where is it warmest?
The warmest places in January are Rosario (30 °C), Córdoba, Argentina (29 °C) and Mendoza (29 °C).
Argentina in January: where is the sea warmest?
The sea is warmest at Buenos Aires (26 °C), Mar del Plata (20 °C) and Ushuaia (9 °C).
Argentina in January: where is the weather best?
The best holiday weather in January – warm, sunny and dry – is in Bariloche, Buenos Aires and La Plata.
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