Should I bring a rain jacket?

Yes, but ensure it is a 'shell' rather than an insulated jacket. In the tropics, you want a thin, breathable layer that blocks wind and rain without trapping body heat.

How do I keep my clothes from smelling in high humidity?

Use a small, breathable mesh laundry bag to keep worn clothes separate from clean ones. Sprinkle a tiny amount of baking soda or use a specialized laundry scent sheet inside your pack.

Packing for Tropical Backpacking

Focus on high-performance synthetic or merino wool fabrics that wick moisture and dry overnight. Stick to a 30-40 liter backpack to force yourself to keep your total weight under 15 pounds, which makes navigating humid climates and public transit significantly easier.

Adopt the Rule of Three. Pack exactly three of everything: three shirts, three pairs of underwear, three pairs of socks, and two bottoms (one short, one lightweight pant). You will be washing clothes in a sink every 3-4 days, so stop trying to pack for a full week.
Prioritize Quick-Dry Fabrics. Avoid heavy cotton at all costs. It stays wet, promotes chafing, and smells quickly in humidity. Use lightweight nylon, polyester, or merino wool, which can be washed in the shower and dried in front of a fan within 6-8 hours.
Use Compression Cubes. Instead of standard packing cubes, use compression cubes. They remove excess air from your clothing, saving vital space in your pack for non-clothing items like electronics or medical supplies.
Choose the Right Footwear. Wear your heaviest shoes on the plane. Pack one pair of sturdy, water-friendly walking sandals (like Chacos or Tevas) and one pair of lightweight, breathable trail runners. Do not bring heavy hiking boots unless you are trekking in high-altitude mountains.

Should I bring a rain jacket?: Yes, but ensure it is a 'shell' rather than an insulated jacket. In the tropics, you want a thin, breathable layer that blocks wind and rain without trapping body heat.
How do I keep my clothes from smelling in high humidity?: Use a small, breathable mesh laundry bag to keep worn clothes separate from clean ones. Sprinkle a tiny amount of baking soda or use a specialized laundry scent sheet inside your pack.