🇦🇷 Buenos Aires vs 🇮🇹 Milan

Humid subtropical — hot humid summers, mild winters, year-round rainfall

Buenos Aires has a humid subtropical climate — hot and sticky summers, mild winters, and moderate rainfall year-round. The Pampas winds can create dramatic temperature swings. The city is in the Southern Hemisphere, so seasons are opposite to North America/Europe.

Milan sits in the western Po Valley, one of Europe's most fog-prone and humidity-trapping basins, hemmed in by the Alps to the north and the Apennines to the south. The city experiences hot, humid summers with weak ventilation and cold, damp winters where temperature inversions trap pollution and moisture at ground level. The Navigli canal system and proximity to several pre-Alpine lakes introduce subtle moisture gradients, while the dense urban core generates one of Italy's strongest urban heat island effects.