How much clothing do I really need for months of travel?

2-3 weeks worth maximum. You'll be doing laundry weekly anyway in this humidity, and carrying more just weighs you down. Focus on pieces that work in multiple situations.

Should I pack for air conditioning or assume it's hot everywhere?

Pack one light layer for over-air-conditioned buses and restaurants, but plan for heat as your default. Many budget accommodations have minimal AC.

What shoes work best for this climate?

One pair of quick-dry hiking sandals, one pair of breathable sneakers, and flip-flops. Leather takes forever to dry and closed-toe shoes can get moldy in the humidity.

How do I deal with constant laundry in humid weather?

Use lavenderías (laundromats) with machine dryers rather than hand-washing. Clothes hung to dry outside can take 2-3 days and may never fully dry during rainy season.

How to Pack for Long-Term Travel in Mexico's Caribbean Coast

Pack lightweight, quick-dry fabrics in breathable natural fibers for year-round heat and humidity. Focus on 2-3 weeks of clothing that transitions from beach to town, plus serious sun protection and rain gear for hurricane season (June-November).

Choose your base wardrobe. Start with 10-12 pieces total: 4-5 lightweight tops, 2-3 bottoms, 1 light dress or button-up shirt, 2 swimsuits, and 1 light jacket. Stick to quick-dry synthetic blends or merino wool that you can wash in a sink and have dry by morning.
Plan for the humidity. Pack moisture-wicking underwear and avoid cotton except for one pair of jeans. Bring antifungal powder for feet and body, and pack an extra pair of shoes since nothing stays dry long in this climate.
Build your rain strategy. Pack a packable rain jacket and quick-dry pants for hurricane season. Add a small umbrella and waterproof phone case. Your regular clothes will get soaked, so plan for it.
Maximize sun protection. Bring a wide-brimmed hat, long-sleeve UV shirt, and quality sunglasses. Pack reef-safe sunscreen (zinc oxide based) since chemical sunscreens are banned in many marine parks.
Pack for town and beach transitions. Include one nicer outfit for restaurants and cities, comfortable walking shoes, and a sarong or lightweight cover-up that works as a towel, blanket, or dress.

How much clothing do I really need for months of travel?: 2-3 weeks worth maximum. You'll be doing laundry weekly anyway in this humidity, and carrying more just weighs you down. Focus on pieces that work in multiple situations.
Should I pack for air conditioning or assume it's hot everywhere?: Pack one light layer for over-air-conditioned buses and restaurants, but plan for heat as your default. Many budget accommodations have minimal AC.
What shoes work best for this climate?: One pair of quick-dry hiking sandals, one pair of breathable sneakers, and flip-flops. Leather takes forever to dry and closed-toe shoes can get moldy in the humidity.
How do I deal with constant laundry in humid weather?: Use lavenderías (laundromats) with machine dryers rather than hand-washing. Clothes hung to dry outside can take 2-3 days and may never fully dry during rainy season.