How to Pack a Backpack for a Month-Long Trip Through Mexico and the Caribbean

Pack for hot, humid weather with occasional rain. Bring 7-8 days of clothes, focus on quick-dry fabrics, and prioritize swimwear, sun protection, and a good daypack. Budget 15-20kg total weight.

  1. Choose your backpack size. Use a 45-55L backpack. Any bigger and you'll overpack. Test the weight fully loaded - should be 15-20% of your body weight maximum.
  2. Pack clothes for 7-8 days max. 4-5 t-shirts, 2-3 shorts, 1 pair long pants, 1 light hoodie, 7 pairs underwear, 8 pairs socks. Choose quick-dry synthetic fabrics or merino wool.
  3. Prioritize beach and swim gear. 2 swimsuits (one to wear, one to dry), beach towel (microfiber), flip-flops, and reef-safe sunscreen. Skip regular towels - hostels provide them.
  4. Pack for tropical rain. Lightweight rain jacket (not poncho - too hot), waterproof phone case, and quick-dry clothes. Avoid cotton - it stays wet for days.
  5. Organize with packing cubes. One cube for clothes, one for electronics/toiletries, one for documents. Keeps everything findable and helps with weight distribution.
  6. Pack a quality daypack. 20-25L daypack for beach days and day trips. Should fit water, snacks, sunscreen, and valuables. Many hostels don't allow large backpacks in rooms during the day.
Should I pack hiking boots for Mexico?
Only if you're specifically planning multi-day hikes. Trail runners or sturdy sneakers handle most ruins and day hikes fine, dry faster, and take up less space.
How much cash should I carry?
Mexico: $200-300 cash at any time. Caribbean islands: varies hugely - some are cash-only, others take cards everywhere. Research each destination specifically.
Do I need malaria medication?
Generally no for tourist areas, but check CDC recommendations 4-6 weeks before travel. Focus on good bug spray with DEET and long sleeves at dawn/dusk.