South America

The dry season in most Andean and tropical regions coincides with winter in the Southern Hemisphere, bringing clear skies for trekking and sightseeing. Patagonia and southern Chile are best from November to March. Brazil's northeast coast is sunny year-round.

• Altitude sickness is a real concern in Cusco (3,400m), La Paz (3,640m), and Bogota (2,640m). Spend at least one full day acclimatizing before strenuous activity, drink plenty of water, and try coca tea.
• Check yellow fever vaccination requirements before traveling. It is recommended or required for entry into parts of Brazil, Colombia, Peru, and Bolivia. Carry your vaccination certificate.
• Learn basic Spanish phrases before your trip. Outside major tourist areas, English is rarely spoken. Even a few words like "por favor," "gracias," and "cuanto cuesta" go a long way.
• Use common-sense safety precautions in cities: avoid displaying expensive jewelry or electronics, use registered taxis or ride-hailing apps like Uber, and stay aware of your surroundings, especially at night.
• Overnight buses between cities are comfortable and save on accommodation costs. Look for "semi-cama" (reclining) or "cama" (fully flat) seats on reputable companies like Cruz del Sur in Peru or Pluma in Brazil.
• South American cuisine varies dramatically by country. Do not miss ceviche in Peru, asado and empanadas in Argentina, acaraje in Brazil, and arepas in Colombia.
• Carry small bills and coins. Many local vendors, bus drivers, and markets cannot break large notes, and ATMs sometimes dispense only large denominations.
• Travel insurance with medical evacuation coverage is strongly recommended, especially if you plan to trek at altitude or visit remote areas with limited medical facilities.