Bacalar Weather December: 7 Things to Know Before You Go

Bacalar weather December is ideal for travelers looking to enjoy warm days and pleasant evenings in southern Mexico. This charming town, famous for its stunning Lagoon of Seven Colors, typically experiences comfortable weather throughout the month. Expect afternoon temperatures around 28–30°C (82–86°F), while evenings cool down to a refreshing 19–21°C (66–70°F), making December a great time to explore Bacalar.

Rain is less frequent than during the wettest months, although you can still get the odd shower. Average December rainfall is around 65–77 mm. The bigger thing to watch is the wind, which sometimes picks up when a cold front passes through.

If you're planning a trip, here's what you should know about Bacalar weather in December before deciding what to do each day.

Bacalar Weather in December at a Glance

Here's a quick breakdown of Bacalar weather December conditions to help you understand what to expect throughout the month.

These are typical conditions rather than a forecast for your travel dates. December weather can change when a northern cold front reaches Bacalar.

1. December Is a Great Time for a Bacalar Catamaran Tour

One of the best ways to enjoy Bacalar weather December conditions is by heading out onto the stunning Lagoon of Seven Colors. December's warm afternoons are perfect for exploring the lagoon, but choosing the right time of day can make your experience even better. Plan your visit for the morning when winds are typically lighter and the water is calmer. With fewer ripples on the surface, you'll have a clearer view of the beautiful contrast between the shallow turquoise areas and the deeper blue waters.

A private Bacalar catamaran tour is a good option if you'd rather spend the trip with just your own group.

A few reasons to consider it:

• Room to relax: Enjoy the lagoon without sharing your trip with unfamiliar passengers.

• Morning scenery: The changing water colors are easier to appreciate under clear skies.

• Time together: A private setting works well for couples, families, and small groups.

• Tour choices: Boat Trips Club offers private, romantic, and sunrise catamaran experiences.

Don't overlook the wind forecast when booking. Strong northern winds can make the water rougher than you might expect from the temperature alone. It's worth confirming sailing conditions with your operator the day before departure. 

Want to make the most of the warm December weather? Explore our Bacalar lagoon excursion options and find a relaxing way to experience the Lagoon of Seven Colors.

2. Bacalar Temperatures in December Are Warm and Pleasant

When it comes to Bacalar weather December, you won't need heavy winter clothing during the day. Afternoon temperatures typically reach 28–30°C (82–86°F), making it feel warm, especially under direct sunlight. However, as the sun sets, temperatures gradually drop, bringing cooler and more comfortable conditions to the town. This makes December a pleasant time to explore Bacalar during the day and enjoy relaxing evenings outdoors.

Here's what to expect:

• During the day: Light clothing works well, particularly when you're walking around town.

• After sunset: Temperatures usually settle around 19–21°C (66–70°F).

• During cold fronts: Mornings and evenings may feel cooler than the monthly averages suggest.

Summer temperatures can be more tiring, especially if you plan to walk between attractions. December makes visiting Fort San Felipe, browsing nearby shops, and stopping for lunch around the town square a little easier. 

Looking for more ways to enjoy the pleasant weather? Discover the best things to do in Bacalar, from exploring local attractions to spending time around the beautiful lagoon.

3. December Brings Less Rain to Bacalar

September and October are among Bacalar's wetter months. By December, the wetter part of the year has largely passed. Average rainfall falls to roughly 65–77 mm for the month, although totals vary from year to year. That's useful news if you plan to spend much of your holiday outside.

But there's a difference between a dry season and a month without rain. You could have a clear morning, then find yourself waiting out a shower at a café. Some days stay cloudy even when very little rain falls. 

The Bacalar rainy season generally runs from May through October, so December is usually a more reliable choice for sightseeing.Rather than planning around monthly averages alone, check the forecast shortly before each outdoor activity. If rain is expected, keep a café visit or another flexible activity in mind.

Planning to explore beyond the lagoon? Check out these day trips from Bacalar for more places to visit and experiences to enjoy during your December getaway.

4. Bacalar Lagoon Is Beautiful, but Wind Can Affect Water Conditions

The Lagoon of Seven Colors gets its name from the different shades of blue and green across the water. Its changing depths, pale limestone bottom, and sunlight create these colors. On sunny days, shallow areas look almost transparent, while deeper sections turn dark blue.

December can also bring northern cold fronts, locally called nortes. These winds sometimes make the lagoon choppy, affecting swimming, kayaking, and paddleboarding.

Here's what to keep in mind before heading out:

• Check wind conditions: Strong gusts can make swimming and water activities uncomfortable, even on sunny days.

• Choose calmer hours: Mornings may offer gentler conditions, but always check the day's forecast.

• Have a backup plan: If winds cancel your catamaran tour, consider visiting Cenote Azul if conditions are safe.

• Explore on land: Fort San Felipe is another option when sailing isn't possible.

Bacalar is also home to delicate stromatolites, ancient living formations that need protection. Never touch or step on them, and respect all protected areas around the lagoon.

5. December Has Shorter Days, So Plan Activities Early

When planning your activities around Bacalar weather December, you'll have roughly 11 hours of daylight to explore this beautiful destination. The sun typically rises between 7:10 and 7:30 AM and sets around 6:15–6:30 PM. These daylight hours give you plenty of time to enjoy lagoon tours, sightseeing, and outdoor adventures. To make the most of your day, start your activities early rather than leaving everything until late afternoon.

A simple way to plan your day:

• Visit Fort San Felipe early: You'll have time to explore the fort and nearby streets without rushing.

• Use the afternoon wisely: Fit in the outdoor attractions you've been looking forward to.

• Keep a sweater nearby: It can feel noticeably cooler beside the lagoon after sunset.

• Take your time over dinner: Save the evening for a local restaurant or a walk around the square.

If you're researching things to do in Bacalar in December, pay attention to opening hours as well as sunset times. Some attractions may close before dark, particularly around the Christmas holidays.

Want to experience the lagoon before the day gets busy? Consider a sunrise private catamaran tour in Bacalar and enjoy the beautiful morning scenery as the sun rises over the water.

6. Christmas and New Year Bring More Visitors to Bacalar

The first half of December and the Christmas holidays can feel like two different trips. Early in the month, Bacalar is generally quieter. Finding a hotel room may be easier, and you have a better chance of getting a table without booking far ahead.

As Christmas approaches, more visitors arrive for the holiday break. Restaurants get busier, popular accommodation fills up, and the town feels livelier. Prices can change with demand, too. A room that's reasonably priced in early December may cost more over Christmas or New Year.

If you're visiting during the holiday period, don't leave accommodation bookings until the last minute. It's also worth reserving any activities you particularly want to do. For travelers watching their budget, early December is worth checking first. If you prefer a busier holiday atmosphere, the final weeks of the month may be more appealing.

Visiting Bacalar with your partner this December? Make your getaway more memorable with a romantic private catamaran tour for two and enjoy a peaceful experience together on the lagoon.

7. What to Pack for Bacalar Weather in December

Packing for Bacalar weather December is simple, as the weather is generally warm and pleasant throughout the month. Lightweight summer clothing, such as T-shirts, shorts, and breathable outfits, will keep you comfortable during the day. 

However, evenings can occasionally feel cooler, so bringing a light sweater or jacket is a good idea. Comfortable walking shoes or sandals are also essential if you plan to explore the town, visit local attractions, or enjoy outdoor activities.

Here's what to bring:

• Lightweight cotton or breathable clothing

• Swimwear and a quick-dry towel

• Light sweater or jacket

• Wide-brimmed hat and sunglasses

• Mineral/reef-safe sunscreen (for land) & UPF 50+ rash guard (for swimming)

• Comfortable sandals or walking shoes

• Reusable water bottle

• Waterproof pouch for valuables

• Insect repellent

Before visiting the lagoon, check local rules about sunscreen, insect repellent, and other personal-care products. Even products marketed as reef-safe may not be permitted in protected swimming areas.

For swimming, a UPF 50+ rash guard offers sun protection without introducing sunscreen into the water. You don't need to pack for every possible weather change. A few sensible extras should cover most December conditions.

Temperature Trends in Bacalar in December (2021–2025)

Bacalar weather December trends from 2021 to 2025 highlight variations in daytime highs and nighttime lows. December generally brings warm afternoons and cooler evenings, making it suitable for outdoor activities. However, occasional cold fronts can cause temperature drops, particularly during the night.

According to WeatherSpark's historical weather records for Bacalar, temperatures vary from year to year. Daytime highs typically remain around 28°C (83°F), while nighttime lows average approximately 20°C (68°F). These historical patterns help travelers understand December conditions, plan lagoon activities, and pack appropriately for warm afternoons and cooler evenings.

Is December a Good Time to Visit Bacalar?

Yes, December is a good time to visit Bacalar, especially if you prefer warm days without the heavier rains of late summer. The weather generally suits outdoor sightseeing, and the evenings are comfortable for spending time around town. Just be realistic about the forecast. December can bring a cooler spell or a few windy days, so avoid making every activity dependent on perfect conditions.

For fewer crowds, aim for the first half of the month. Christmas and New Year bring a busier atmosphere, along with greater demand for hotels. The better choice comes down to how you like to travel and what you're comfortable spending.

Final Thoughts

Experiencing Bacalar weather December makes this charming destination a great choice for a relaxing winter getaway. With pleasant temperatures and beautiful lagoon views, there's no need to pack every day with activities. Some of the best moments come from exploring the town at your own pace and watching the Lagoon of Seven Colors change shades as the sunlight shifts. 

When planning your trip, consider the holiday crowds, choose your travel dates wisely, and check the weather forecast before booking lagoon tours or other water activities. A little flexibility can save you from an afternoon spent waiting for the wind to settle. Pack for warm days, bring something for cooler evenings, and leave a little space in your itinerary. Bacalar is a place you'll appreciate more when you're not watching the clock.

Frequently Asked Questions

Can You Swim in Bacalar Lagoon in December?

Yes, swimming is generally possible. However, wind and water temperatures can affect how comfortable it feels. Stick to designated swimming areas.

Does It Rain a Lot in Bacalar in December?

December is relatively dry, with average monthly rainfall around 65–77 mm. You can still experience showers, so check the forecast.

Is Bacalar Cold at Night in December?

Usually not. Temperatures often fall to around 19–21°C (66–70°F), although cold fronts can make some evenings cooler.

Is Bacalar Crowded in December?

The first half of December is generally quieter. Christmas and New Year attract more visitors, making advance hotel bookings worthwhile.

What Is the Best Time of Day to Explore Bacalar in December?

Morning is a good choice for outdoor sightseeing. You'll have more daylight available, and conditions are often more comfortable before the afternoon heat.