What to pack for Cancun in December

14 rain days a month finds every seam. A real shell, not a windbreaker.

UV index of 5.8 burns exposed skin in under 15 minutes.

Water and sand reflect intense sun straight into your eyes.

Coastal humidity and rain create breeding grounds for biting insects.

Tap water isn't safe and insect bites need quick treatment.

Tap water isn't safe here. A filter bottle beats buying plastic twice a day.

Ten-hour days drain devices faster than one outlet at the guesthouse charges them.

Set it up before you land. Signal drops for long stretches outside cities.

Dark by 6:05pm. Every campsite chore after that is a two-hands job.

Overhead bins on regional flights to Cancun are smaller than on international routes.

National park visits and city exploration require hands-free carrying.

Fits the overhead on every airline that matters. Skip the checked-bag line entirely.

For the passport, the chargers, and the one dry pair of socks.

Fourteen rain days a month and 78% humidity keep sweat from drying on skin.

Water temperature stays at 72°F, warm enough for swimming throughout December.

Wet terrain from rain and coastal spray demands grip underfoot.

Treat the clothes once and it lasts weeks.

Heat and humidity accelerate dehydration faster than thirst signals appear.

Unfamiliar water causes digestive trouble in most visitors.

One brick charges the laptop, phone, and camera.

Hotel and cafe wifi is shared with everyone else in the building. A VPN keeps your banking and email to yourself.

International travel and crowded tourist areas increase theft risk.

Airport transfers and day trips to national parks separate bags from owners.

Wet clothes from 14 rain days need organization in tight luggage.

Rain and ocean spray soak phones within minutes of exposure.

Fourteen rain days mean clothes stay damp; washing every few days prevents mildew.

Highs of 81°F mean legs stay bare most days.

Fourteen rainy days soak into every seam of unprotected leather.

Ten hours of daylight at high UV intensity requires constant head coverage.

Tap water requires hand sanitizer before eating or touching your face.

Insect bites itch worse in heat, but sunburn makes topical relief complicated.

Humidity corrodes connections; short cables minimize exposure time.

A few phrases go a long way. Ten minutes a day before you leave is plenty.

Humidity and salt spray damage paper documents without protection.

International airport and resort theft require locked luggage.

Humidity at 78 percent turns damp towels and wet gear into mildew within hours.