Buenos Aires, Argentina: Geographic & Strategic Location

Buenos Aires, Argentina's capital and primate city (metro 15M), occupies a pivotal position on the southeastern coast of South America.

Absolute Location

34°36′S, 58°22′W. On the western shore of the Río de la Plata—the world's widest estuary (220 km at mouth)—where the Paraná and Uruguay Rivers meet the Atlantic.

Regional Setting

• Pampas Region: Vast fertile plain (humid subtropical) stretching west—Argentina's agricultural heartland (soy, wheat, beef).
• Bordering Provinces: Buenos Aires Province (west, south), Santa Fe Province (north, across Paraná).
• Key Waterways: Río de la Plata (maritime gateway), Matanza-Riachuelo (southern city limit, heavily polluted), Paraná River (inland navigation to Paraguay/Brazil).

Major Cities Nearby

• Montevideo, Uruguay – 220 km (direct ferry/flight across Río de la Plata)
• Rosario, Argentina – 300 km NW (major port, agri-hub)
• Córdoba, Argentina – 450 km NW (industrial, university city)
• Mendoza, Argentina – 1,000 km W (wine, Andes gateway)

Global Connectivity

• Ezeiza International (EZE) – 22 km SW, main long-haul gateway.
• Aeroparque (AEP) – Urban airport, domestic/regional flights.
• Port of Buenos Aires – Leading container/bulk port on Río de la Plata.
• Rail/Bus – Retiro, Constitución, Once terminals; national network.

Climate

Humid subtropical (Cfa). Summer (Dec–Feb): 25–30°C, humid, thunderstorms. Winter (Jun–Aug): 10–15°C, mild, dry. Rare frost/snow.

Buenos Aires' location made it the natural capital of the Río de la Plata basin—controlling trade, immigration, and political power for the Southern Cone.