Do I really need cold-weather gear if I'm going to the Amazon?

Yes, unless you're staying exclusively in coastal/lowland Brazil or the Guianas. Most South America itineraries include high-altitude cities (La Paz, Cusco, Quito) where nighttime temperatures drop to 32-40°F year-round. Overnight buses blast AC regardless of outside temperature. Pack the down jacket and fleece. They compress small and you'll use them.

Can I just buy gear when I get there if I need it?

Quality outdoor gear is 2-3x more expensive in South America than in North America or Europe, with limited selection outside major cities. You can find cheap fleeces and rain ponchos in local markets, but they won't perform well. Buy your core system before you go. You can supplement with local items (hats, basic layers) if needed.

What about laundry? How many days of clothes do I actually need?

Plan for 7 days of clothes maximum, wash weekly. Most hostels and hotels offer laundry service for $5-10 per load, or you can hand-wash in your room. Quick-dry fabrics are ready to wear in 6-8 hours when hung in dry climates, 12-24 hours in humid regions. Don't pack more than one week — you'll just carry weight you don't need.

Should I pack differently for Patagonia versus the rest of South America?

Patagonia requires the same gear plus an extra mid-layer and warmer gloves/hat if you're going April-October. The base system in this guide works for standard Patagonia travel (November-March). If you're doing winter Patagonia or serious trekking, add a heavier fleece and insulated gloves. Otherwise, the same pack works from Cartagena to Ushuaia.

Is a 60L backpack too big for South America travel?

60L is ideal if you're moving frequently. It's carry-on size on most South American airlines and fits overhead on buses. You can pack for all climates without checking luggage. Smaller (40-45L) works if you're an ultralight packer or staying in warm regions only. Bigger (70L+) is unnecessary unless you're bringing camping gear. Stick with 60L for a first trip.

Pack for Your First Trip to South America

Pack for extreme climate variation. South America spans the equator, meaning you'll need layers for Andean cold (down to 32°F/0°C), breathable cotton for Amazon humidity (95°F/35°C+), and rain protection for unpredictable weather. Focus on versatile pieces that work across climates rather than destination-specific outfits.

Build your base layer system. Start with 4-5 moisture-wicking base layers. Merino wool or synthetic blend, not cotton. These work in Patagonian cold and dry fast in tropical heat. Two long-sleeve, two short-sleeve, one pair of leggings or thermal bottoms. This foundation adapts to every climate you'll hit.
Add climate-specific outer layers. Pack one lightweight down jacket (compressible to fist-size), one rain shell with hood, one fleece mid-layer. The down jacket handles Andean evenings and overnight buses. The rain shell is non-negotiable — afternoon storms are daily in many regions. The fleece bridges the gap. All three together cover temperatures from 95°F days to 32°F nights.
Choose bottoms for versatility. Two pairs of quick-dry pants (one full-length, one convertible zip-off), one pair of shorts, one swimsuit. Avoid jeans — they're heavy, slow to dry, and uncomfortable in heat. Look for pants with zip pockets for bus travel and city walking. The convertible pair handles both mountain hikes and coastal heat in one piece.
Pack sun and rain protection. Wide-brim hat that won't blow off (chin strap or adjustable), polarized sunglasses, compact umbrella. The sun is stronger near the equator and at altitude. You'll use the hat daily. The umbrella doubles as sun shade and rain cover. SPF 50+ sunscreen goes in your toiletries — reapply every 2 hours at altitude.
Get your footwear right. One pair of broken-in hiking boots or trail shoes, one pair of sandals with ankle support (Tevas or Chacos), one pair of lightweight city shoes. The hiking footwear is essential — cobblestone cities and mountain trails both require ankle support and grip. Sandals handle beach towns and hostel showers. City shoes for nicer restaurants. Never bring new shoes.

Do I really need cold-weather gear if I'm going to the Amazon?: Yes, unless you're staying exclusively in coastal/lowland Brazil or the Guianas. Most South America itineraries include high-altitude cities (La Paz, Cusco, Quito) where nighttime temperatures drop to 32-40°F year-round. Overnight buses blast AC regardless of outside temperature. Pack the down jacket and fleece. They compress small and you'll use them.
Can I just buy gear when I get there if I need it?: Quality outdoor gear is 2-3x more expensive in South America than in North America or Europe, with limited selection outside major cities. You can find cheap fleeces and rain ponchos in local markets, but they won't perform well. Buy your core system before you go. You can supplement with local items (hats, basic layers) if needed.
What about laundry? How many days of clothes do I actually need?: Plan for 7 days of clothes maximum, wash weekly. Most hostels and hotels offer laundry service for $5-10 per load, or you can hand-wash in your room. Quick-dry fabrics are ready to wear in 6-8 hours when hung in dry climates, 12-24 hours in humid regions. Don't pack more than one week — you'll just carry weight you don't need.
Should I pack differently for Patagonia versus the rest of South America?: Patagonia requires the same gear plus an extra mid-layer and warmer gloves/hat if you're going April-October. The base system in this guide works for standard Patagonia travel (November-March). If you're doing winter Patagonia or serious trekking, add a heavier fleece and insulated gloves. Otherwise, the same pack works from Cartagena to Ushuaia.
Is a 60L backpack too big for South America travel?: 60L is ideal if you're moving frequently. It's carry-on size on most South American airlines and fits overhead on buses. You can pack for all climates without checking luggage. Smaller (40-45L) works if you're an ultralight packer or staying in warm regions only. Bigger (70L+) is unnecessary unless you're bringing camping gear. Stick with 60L for a first trip.