What to pack for Puerto Rico in December

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

UV index of 6.6 burns exposed skin in under 15 minutes.

Some islands fine you for the regular stuff.

Water glare and sand reflection intensify eye strain on bright days.

Tropical insects thrive in warm, humid coastal environments year-round.

Cuts and scrapes get infected quickly in 78 percent humidity.

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

Eleven hours of daylight means phones drain before sunset arrives.

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

Dark by 5:50pm. Every campsite chore after that is a two-hands job.

Overhead bins fill fast on regional flights, checked bags get delayed.

Daily beach trips and hikes need a separate day bag.

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.

Anything heavier than linen is a mistake at 82°F.

Heat and humidity at 78 percent soak through regular fabric within hours.

Water temperature stays above 73°F year-round, making swimming comfortable daily.

Wet terrain and coastal walking require footwear that drains and grips.

Cold water at 3pm is worth the weight.

Treat the clothes once and it lasts weeks.

Heat and sweating deplete electrolytes faster than plain water replaces them.

Tap water isn't safe, and intestinal illness ruins travel plans.

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 beaches increase theft risk significantly.

Bags move between boats, rental cars, and shared accommodations constantly.

Damp salt air ruins unpacked clothes faster than in dry climates.

Eighteen rain days and constant water exposure risk phone damage.

Sweat and salt stain clothes daily in heat and humidity.

Warm coastal waters and calm bays make snorkeling accessible most days.

Rain, boat transfers, and beach days soak gear repeatedly.

Highs near 82°F mean legs stay bare most of the month.

Doubles as a towel, a scarf, and a cover-up where one's expected.

Eighteen rain days soak boots and invite mold into seams.

Lips crack fast in salt air and strong sun exposure.

Frequent hand contact with salt water and sand spreads bacteria.

Bites itch worse when skin is already burned from sun.

One outlet per guesthouse and multiple devices create charging conflicts.

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

Airport security and border checks require documents close at hand.

Luggage passes through multiple handlers on flights to the island.

Moisture and salt corrode metal toiletry items left loose in bags.