Cozumel Weather in December: What to Expect and Travel Tips
Are you planning a Mexican vacation and wondering about Cozumel weather in December? You’re in the right place.
I lived in Cozumel long enough to experience all the seasons (twice!), and December is one of my favorites.
The temperatures are comfortable, the humidity isn’t overwhelming, and the festive vibe makes the island feel extra special.
Let’s take a closer look so you know what to expect.
Overview of Cozumel Weather in December
- Average High Temperature: 83°F (28°C)
- Average Low Temperature: 68°F (20°C)
- Average Water Temperature: 79°F (26°C)
- Average Rainfall: 2.76″ (7 cm)
- Average Humidity: 77%
December is warm but not sweltering. Evenings are cooler, so you can enjoy a walk along the waterfront or dinner outdoors.
Rain is minimal, and when it does happen, it’s usually a short tropical shower that passes quickly.

What the Weather Really Feels Like
December feels like someone set the thermostat to “comfortable.” Days are sunny and warm enough for swimming, snorkeling, and lounging on the beach. Evenings cool off just enough that you might want a light sweater.
Humidity is present, but it’s nothing compared to summer. You’ll feel tropical warmth without constantly craving air conditioning.
And the best part is while much of the world is shivering through winter, you’ll be soaking up sunshine on a Caribbean island.
What to Pack For a Trip to Cozumel in December
- Light Jacket or Sweater: Evenings and early mornings can be cool. I use this nifty lightweight jacket that doubles as sun protection.
- Rain Gear: In case of a sudden downpour, pack lightweight rain jackets or ponchos. They come in a tiny pouch that’s easy to have on hand.
- Umbrella: Good to have all year, whether for rain or shade. I nearly always carry this small umbrella.
- Water Shoes: Many of Cozumel’s beaches are rocky and slippery. Water shoes like these are a necessity here.
- Sunscreen: Opt for a reef-safe sunscreen to avoid harming the coral.
- Reusable Water Bottle: Cozumel’s water is not safe to drink. Take purified water with you in this reusable bottle that also keeps your water cold. I like it because the lid closes over the straw to keep it clean.

Things to Do in Cozumel in December
- Diving and Snorkeling: The water is warm and clear, with great visibility. Palancar Reef is a must. You can find a tour or snorkel straight from shore.
- Atlantis Submarine Tour: Want to see the reefs without getting wet? This real submarine takes you 100 feet below the surface to spot marine life and even a shipwreck. Read my full review here.
- Christmas Festivities: Downtown San Miguel lights up with decorations and celebrations. You can attend midnight mass, enjoy local food, or just soak up the atmosphere.
- New Year’s Eve: The island knows how to party. Think live music, fireworks, and dancing on the beach. Last year I went to Woody’s and it was a blast.
- Cultural Experiences: Visit the San Gervasio Mayan ruins or the Cozumel Museum. December’s cooler weather makes exploring more enjoyable.
Relax on the Beach: From lively beach clubs like Paradise Beach to quieter spots, December is perfect for a full beach day.
Island Tours: Try a Jeep tour, ATV ride, or zipline adventure. With mild weather, outdoor activities are extra enjoyable.
Hiking: Jungle and coastal trails are great this time of year. You might even spot some local wildlife like crocodiles.

Safety Tips for December Travel
- Weather Awareness: Hurricane season ends in November, but it’s still smart to check forecasts before you travel.
- Hydration: Even in December, the sun can sneak up on you. Drink more water than you think you need.
- Sun Protection: Use reef-safe sunscreen, wear a hat, and consider UV clothing if you’ll be in the water a lot.
- Travel Insurance: I always recommend having it. I use SafetyWing since it covers weather delays and emergencies.
Helpful Resources
- Cozumel Guest Assist App – This app is super helpful. If you need any assistance, including in an emergency, you can get help on the app.
- The Weather Channel: Good for 10-day forecasts, but remember Cozumel weather can change quickly.
Frequently Asked Questions: Cozumel Weather in December
Is December a good time to visit Cozumel?
Yes. Comfortable weather, festive celebrations, and calm water make it one of the best times to visit.
How much does it rain in December in Cozumel?
Around 2.7 inches (70 mm), usually in short bursts.
Can you swim in Cozumel in December?
Absolutely. The water averages 79°F (26°C), which is perfect for swimming and snorkeling.
What is the best month to go to Cozumel?
December through May is generally best. My favorite month is January, after the holiday crowds are gone.
How warm is Cozumel in December?
Expect highs around 83°F (28°C) and lows around 68°F (20°C).
Is Cozumel humid in December?
Yes, but at 77% humidity it’s more comfortable than summer months.
Are restaurants in Cozumel open on Christmas?
Yes, most stay open, though many close early on Christmas Eve for family celebrations.

Wrap-Up: Cozumel Weather in December
Cozumel in December is a sweet spot for travelers. You get mild temperatures, less rain, and a holiday atmosphere without the cold weather stress.
Whether you’re diving, celebrating Christmas, or simply escaping winter, December offers the perfect mix of sun, culture, and relaxation.
Related Posts
- Best Time to Visit Cozumel: Month-by-Month Guide
- Cozumel Weather in January: What to Expect and Travel Tips
- Cancun or Cozumel: Which is Better for Your Vacation?
- Cozumel Pronunciation – How to Sound Like a Local
- What Not to Do in Cozumel: 15 Things to Avoid
- Navigating Cozumel Airport: The Complete Guide
- Legal Drinking Age in Cozumel: All the Facts
- How to Get From Tulum to Cozumel
- Cozumel vs. Playa del Carmen: Which is Better?
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