Should I bring a heavy rain jacket?

No. Tropical rain is usually brief and warm. A lightweight, packable rain shell or a high-quality poncho is sufficient to keep you dry without causing you to overheat.

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

Pack a few silica gel packets or a small cedar wood block in your luggage. Most importantly, use a mesh laundry bag so your dirty clothes can breathe until you have a chance to wash them.

Packing for a Tropical Climate

Focus on moisture-wicking synthetic fabrics and lightweight natural fibers like linen to combat high humidity. Limit yourself to a single carry-on by prioritizing versatile layers and washing clothes on the go rather than packing for every single day.

Choose the right fabric. Avoid heavy cotton and denim, which stay wet and trap heat. Pack items made of merino wool, polyester-blend tech fabrics, or linen. These materials breathe well and dry in 4-6 hours if hand-washed.
Implement the 'Rule of 5'. Bring 5 pairs of underwear, 5 pairs of socks, 3 t-shirts, 2 pairs of shorts, 1 pair of long, loose-fitting trousers (for sun/mosquito protection), and 1 lightweight rain shell. This is sufficient for a trip of any length if you use a laundry service.
Optimize footwear. Limit yourself to two pairs of shoes: one pair of breathable sneakers for walking and one pair of sturdy, waterproof sandals for water activities or rain. Wear your heaviest pair on the plane.
Manage humidity and hygiene. Pack your toiletries in a hanging mesh bag to allow airflow and prevent mold. Include a travel-sized bottle of detergent for sink-washing and a microfibre towel that dries faster than standard cotton.

Should I bring a heavy rain jacket?: No. Tropical rain is usually brief and warm. A lightweight, packable rain shell or a high-quality poncho is sufficient to keep you dry without causing you to overheat.
How do I prevent my clothes from smelling in high humidity?: Pack a few silica gel packets or a small cedar wood block in your luggage. Most importantly, use a mesh laundry bag so your dirty clothes can breathe until you have a chance to wash them.