The Andes mountain range runs between Chile and Argentina

iss074e0349412 (March 3, 2026) --- The Andes mountain range running between Chile and Argentina creates distinct differences in climate and geography between the two South American nations. Chile’s Pacific coastline contributes to its moderate temperatures, with the Atacama Desert in the north being one of the driest places on Earth, while its central and southern regions are cooler and wetter. Argentina’s western side is more arid because the Andes block moisture from the Pacific Ocean, while the country’s Atlantic coastline receives more precipitation than its interior and western regions.