Patagonia

November to March is the Southern Hemisphere summer and the only realistic window for most visitors — trails are snow-free, refugios and campsites are open, and daylight stretches past 10pm in December. Patagonia's wind is a defining feature of this season, especially December-January, when sustained 60-80km/h gusts are routine on exposed ridgelines. Shoulder months (November, March) have noticeably fewer crowds and lower refugio prices, with slightly higher odds of unpredictable weather. Outside this window, most park infrastructure simply closes — this isn't a year-round destination like the rest of South America.

Both parks are remote by design. For El Chaltén: fly into El Calafate (itself reached via a 3-3.5 hr flight from Buenos Aires), then take a 3-hour bus or transfer to El Chaltén. For Torres del Paine: fly into Punta Arenas (Chile) or cross overland from El Calafate, then bus or transfer 2-3 hours to Puerto Natales, the gateway town, followed by another hour to the park entrance. There is no train and minimal car rental infrastructure worth using — buses and organised transfers are how nearly everyone moves between towns, and they should be booked ahead in peak season.

Patagonian lamb, slow-roasted whole over an open fire (asado al palo), is the regional dish worth seeking out in both El Chaltén and Puerto Natales — it's a genuine specialty, not a tourist gimmick. El Chaltén has punched above its weight on food for a town of 1,600 people, with a genuinely good craft beer scene (La Vinería, Cervecería Lago del Desierto) fuelled by exhausted hikers. Torres del Paine's refugios serve solid, filling set menus included in the (expensive) bed rate — not memorable, but sufficient after a long trekking day. Both areas rely heavily on imported produce given the remote location, so meals lean towards meat, potatoes, and bread rather than fresh vegetables.

El Chaltén's day hikes (Laguna de los Tres, 20km round trip; Laguna Torre, 18km round trip) are doable by any reasonably fit hiker with no camping gear required, staying in town each night. Torres del Paine's multi-day options — the W Trek (4-5 days, the classic) and the full O Circuit (7-9 days, more remote and dramatically less crowded) — require carrying gear between refugios or paying for the pricier full-service refugio-to-refugio model with meals and bedding included. For most first-time visitors with under a week total, a base in El Chaltén covering both signature day hikes is the higher-value choice over a rushed, underprepared attempt at the W.