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What to Pack for Cancun in December & January
December and January represent peak winter-sun season in Cancun and the Riviera Maya. Expect 82°F (28°C) sunny days, refreshing 68°F (20°C) ocean breezes at night, and crystal-clear Caribbean waters with virtually zero Sargassum seaweed.
Updated August 2026
Quick answer
For a 7-day Cancun winter holiday trip, expect 80–84°F (27–29°C) daytime sunshine and 68–72°F (20–22°C) breezy evenings. Pack resort swimsuits (2–3 per person), rash guards, formal resort wear for a la carte dining (collared shirts and closed shoes for men/teens), water shoes for cenotes, reef-safe mineral sunscreen, and a light sweater for breezy beachfront dinners.
At a glance
- Avg Daytime Temp:
- 82°F (28°C) — sunny and pleasant
- Avg Evening Temp:
- 68°F (20°C) with Caribbean breeze
- Sargassum Seaweed:
- Lowest levels of the year (clear beaches)
- Water Temperature:
- 78–80°F (25–27°C)
- Resort Dress Code:
- Pants & closed shoes required for men at dinner
Sample checklist preview
7 days · 2 adults · 2 childrenWhat the generator starts with for this trip type — you can edit everything in the next step.
- Swimsuits×2
- Hats×1
- Dress Shirts×2
- Dresses×3
- T-shirts×4
- Pants×3
- Shorts×4
- Socks×6
- Underwear×6
- Sleepwear×3
- Casual Sandals×1
- SunscreenShared (1)
The full generator adjusts these for weather, laundry, travelers, and destination.
What actually matters in Cancun in December & January
- •Sargassum seaweed is minimal to non-existent during winter months (the seaweed season runs April–October). Ocean water along Cancun's Hotel Zone is at its absolute clearest.
- •Evening breezes off the Caribbean drop temperatures into the upper 60s°F (19–21°C). Open-air beachfront restaurants and marina walks feel breezy; pack a light cardigan, linen wrap, or light hoodie for each family member.
- •All-inclusive resort evening dress codes: Most 4- and 5-star resort a la carte restaurants enforce a smart casual dress code for dinner. Men and teenage boys must wear long pants/clean trousers, collared polo shirts, and closed-toe shoes (no flip-flops, board shorts, or tank tops).
- •Cenote and eco-park sunscreen rules: Cenotes (Dos Ojos, Gran Cenote) and eco-parks (Xcaret, Xel-Há) strictly ban chemical sunscreens to protect freshwater caverns and coral. Only 100% mineral formulas (zinc oxide / titanium dioxide) are allowed.
- •Bring insulated stainless steel tumblers (Yeti/Stanley) for pool days: resort bartenders will happily fill your large cup with iced cocktails, juices, or water, keeping drinks ice-cold all afternoon without melting into warm mush.
- •Pack plenty of $1, $5, and 50/100 peso bills for tipping bartenders, housekeeping, luggage staff, and excursion boat captains.
Typical weather by month
| Month | Avg high | Avg low | Rainy days |
|---|---|---|---|
| Dec | 28°C / 82°F | 20°C / 68°F | 8 |
| Jan | 28°C / 82°F | 20°C / 68°F | 7 |
| Feb | 28°C / 83°F | 20°C / 68°F | 5 |
Typical monthly averages for planning. Check a forecast closer to your trip.
Seasonal things to plan around
- Dec–Jan holiday peakAirport customs lines and transfer traffic are at their highest. Pre-book private airport transfers (USA Transfers / Canada Transfers) to avoid chaos.
Common Cancun winter packing mistakes
- •Packing only swimwear and flip-flops, then getting turned away from the resort's best steakhouse due to dinner dress code.
- •Buying mineral sunscreen at the resort gift shop for $30+ per bottle instead of bringing it from home.
- •Skipping water shoes. Cenote limestone steps and rocky entries are sharp and slippery; water shoes with rubber soles are essential for kids.
- •Exchanging USD for pesos at airport kiosks with terrible exchange rates. Use resort ATMs or pay with no-foreign-transaction-fee credit cards.
FAQ
Is the ocean warm enough to swim in Cancun in January?
Yes! Caribbean ocean water temperatures in December and January average 79–80°F (26°C), which is comfortably warm for swimming and snorkeling.
Do all-inclusive resorts enforce dress codes for kids?
Children are generally given leniency, but teenage boys (13+) are usually expected to follow adult dress codes (clean trousers or nice dark shorts and closed shoes) for dinner.
What currency should I bring to Cancun?
US Dollars (USD) are widely accepted for tips and excursions. However, Mexican Pesos (MXN) offer better value for local shops and restaurants outside the resort.
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