9 Things You Need to Know About Belize Weather in December

Thinking about escaping the winter chill for a few days of Caribbean sunshine? Belize weather in December brings warm afternoons, refreshing coastal breezes, and the beginning of the country's drier season. It's a popular time for beach holidays, island stays, and outdoor activities without the intense heat of summer.

You might spend one morning snorkeling near the Belize Barrier Reef and another wandering through the streets of San Pedro. But December isn't always sunny. Passing showers, stronger winds, and cooler evenings can occasionally change your plans.

Before booking your holiday, here's what you should know about Belize's temperatures, rainfall, sea conditions, activities, catamaran tours, and packing essentials.

1. What Is the Weather Like in Belize in December?

Belize weather in December is warm with average daytime temperatures of around 28-30°C (82-86°F). The month ushers in the drier season, with more opportunities for beach days and outdoor sightseeing. Sunshine is the order of the day, but tropical weather includes spells of cloud and brief showers.

The weather also depends on where you're staying. Northern Belize generally receives less rain than the southern coast, while offshore islands experience more direct exposure to coastal winds. Early December can still feel like the tail end of the rainy season. Conditions often become drier later in the month, although this varies each year.

Here's a quick look at typical Belize weather in December conditions.

These figures represent approximate regional climate averages rather than guaranteed daily weather.

2. Temperatures in Belize in December Stay Warm and Comfortable

In December temperatures in Belize are usually around 28-30°C (82-86°F), but evenings can feel quite cool. Along the coast, towns like Belize City benefit from sea breezes that ease the afternoon heat. Inland locations tend to be warmer during the day but cooler after sunset.

Average high temperature at Belize City Airport is 28.3 °C Average low temperature at Belize City Airport is 21.2 °C During the day the temperature in Belmopan averages about 28.6 °C with nighttime temperatures dropping to around 19.8 °C. Temperatures in the Orange Walk area average a daytime high of 29.8 °C and a cooler nite low of 18.7 °C.

Bring breathable clothes for daytime and a light sweater for evenings, especially if you're staying inland.

Did You Know?

Belize may be tropical, but cold fronts from North America can reach the country during December. These weather systems can bring cooler temperatures, stronger winds, and unexpected showers. So, even on a Caribbean holiday, you might experience a surprisingly chilly evening!

3. December Is a Great Time to Explore Belize on a Catamaran Tour

You see Belize’s coast line from a different angle being on the water. December in the tropical warmth can be a particularly inviting time for a catamaran trip around San Pedro. From the deck you can enjoy the turquoise Caribbean waters, sandy island beaches and reef scenery. It's a pleasant change from spending your entire holiday on the beach.

San Pedro on Ambergris Caye is a popular starting point, with Caye Caulker another favorite destination for island visits.

If you're staying in San Pedro, Boat Trips Club offers shared and private catamaran experiences. Depending on what you’re interested in, there are several kinds of things to do.

• Hol Chan snorkeling tours provide an opportunity to view tropical fish and coral formations.

• Caye Caulker tours provide a blend of island sightseeing with time to enjoy the water and local surroundings. 

• Sunset sailing is a more tranquil way to take in the shifting evening hues along the coast.

Shared excursions are more suitable for couples and travelers who want to meet people, while private tours offer more flexibility for families and groups. Remember the weather changes in December. Cold fronts may bring stronger winds and choppy seas, so always check marine conditions prior to departure.

Planning a day on the water with family or friends? A private Belize catamaran tour lets your group enjoy Hol Chan, Shark Ray Alley, and Caye Caulker with a dedicated crew.

Christmas and New Year are busy holiday periods. Booking preferred experiences ahead of time can help you avoid last minute disappointment.

Want to see Belize's famous reef and islands in one day? Check out this Hol Chan catamaran tour featuring snorkeling, Shark Ray Alley, and a stop at Caye Caulker.

4. December Brings Less Rain, but Occasional Showers Are Possible

Don't expect every December morning in Belize to begin with clear blue skies. Rain is still possible, especially as the country moves out of its wetter months. The good news is that December is generally a wetter month than October and November. How much rain falls, however, varies greatly by destination.

Belize City Airport averages around 151 mm of rainfall during December, compared with approximately 75 mm in the Orange Walk area. Farther south, coastal destinations can receive considerably more rain. These are historical monthly averages, so they won't tell you exactly what to expect during your holiday.

If you're planning outdoor activities, leave some room in your schedule for unexpected showers. A lightweight rain jacket is worth carrying, even when the morning looks promising in Belize weather in December.

Want to enjoy Belize's coastline as the sun goes down? Book a Belize sunset catamaran sail and enjoy beautiful Caribbean views, refreshing drinks, and fresh ceviche as the evening sky changes colors.

5. Belize's Sea Temperature Is Great for Swimming and Snorkeling

Stepping into the Caribbean Sea in December usually feels comfortable rather than chilly. Water temperatures stay around 27°C (81°F), making swimming and snorkeling appealing throughout the month.

One of Belize's biggest attractions is the Belize Barrier Reef, where coral formations provide habitats for colorful tropical fish and other marine life.

Two snorkeling spots worth knowing about include the following.

• Hol Chan Marine Reserve is known for its coral formations, tropical fish, and occasional sightings of sea turtles.

• Shark Ray Alley is popular for encounters with nurse sharks and southern stingrays in their natural habitat.

Warm water doesn't necessarily mean excellent visibility, though. Strong winds can stir up the water, while waves and recent rainfall may make underwater viewing less clear. Check the marine forecast before heading out, and follow your snorkeling guide's safety instructions. Conditions can change even when the weather looks pleasant from shore.

Want to spend more time near Belize's beautiful Barrier Reef? Book a private overnight catamaran tour and enjoy reef snorkeling, sunset views, dinner onboard, and a peaceful night under the Caribbean stars.

6. December Is One of the Best Times to Visit Belize for Outdoor Adventures

December is not only the time to go for beach holidays Belize. The warm weather also makes it a good month to see country’s forests, wildlife and ancient Maya sites. Inland adventures are popular in the Cayo District in Western Belize. You can visit Xunantunich with its tall stone structures overlooking the countryside. Another great archeological site is Lamanai with its ancient temples and forest setting.

The pleasant Belize weather in December makes it a great time to explore rainforests and spot colorful birds and wildlife. During nature walks, listen for bird calls and keep an eye out for toucans in the trees. With warm temperatures and generally favorable conditions for outdoor activities, December is one of the best months to visit Belize. Other dry-season months also offer benefits depending on your travel plans.

7. Temperature Trends in Belize in December (2021–2025)

According to the Japan Meteorological Agency, December temperatures at Belize City's international airport remained fairly consistent between 2021 and 2025. Average daytime highs ranged from 28°C to 29.4°C, while nighttime lows stayed between 21.3°C and 22.1°C. The graph shows small yearly fluctuations rather than a steady warming or cooling trend, giving you a useful picture of December's typical temperatures.

8. Christmas Holidays Bring Bigger Crowds and Higher Travel Demand

As Christmas approaches Belize begins to get noticeably busier. San Pedro, Ambergris Caye and Caye Caulker lure those looking for sun, island stays and a break from colder weather. Popular activities and hotels can fill up quickly especially during the last few weeks of December. In many towns you will also see Christmas decorations, local festivities and a livelier atmosphere.

If you want to avoid the holiday rush, the first half of December might be more your speed. You may have more options for your accommodations and activities. Late December often brings more visitors, but that does not mean the weather will necessarily be better.

Not sure if December is the right month for your trip? Read this guide to Belize weather in January to compare temperatures, seasonal conditions, and travel plans.

9. What to Pack for Belize Weather in December

You won't need an oversized suitcase for Belize weather in December, but packing a few practical extras can make your trip more comfortable.

Here's what deserves a spot in your luggage.

• Lightweight cotton shirts, shorts, and dresses for warm afternoons.

• Swimsuits and comfortable beachwear for time by the water.

• Sunglasses, sunscreen, and a wide brimmed hat for protection from the tropical sun.

• A lightweight rain jacket for passing showers.

• A light sweater or jacket for breezy evenings.

• Comfortable walking shoes for Maya sites, town visits, and nature trails.

• Water friendly footwear for beaches and rocky shorelines.

• A waterproof pouch to keep your phone and valuables protected.

For a catamaran outing, bring a towel, a secure hat, a light cover up, and a waterproof bag. Loose hats can easily blow away when the breeze picks up.

Final Thoughts

Belize weather in December gives you plenty of reasons to consider Belize for a winter holiday. Days remain warm, the sea is comfortable for swimming, and rainfall generally decreases as the drier season begins. You can take in the coastal scenery, spend time around the islands, or head inland to Maya ruins and rainforest trails.

Just remember that tropical weather doesn’t always follow a perfect schedule. There is still the possibility of brief showers, cooler evenings and changing sea conditions. Selecting activities that allow for some flexibility means you get to enjoy more of your holiday without relying on sun to shine all the time! If you love combining sightseeing with relaxing on the beach, the weather in Belize in December provides a particularly tempting combination.

FAQs: Belize Weather in December

Is December a good time to go to Belize?

Yes, December is a good time for warm weather, the beach holidays and sightseeing. It also marks the start of the usually drier travel season.

Is December a rainy month in Belize?

December receives less rain than the wetter months, but showers still occur. Southern coastal areas generally receive more rainfall than northern parts of Belize.

Is Belize weather in December hot?

Belize remains warm, with average daytime highs around 28–30 °C (82–86 °F). It’s cooler in the evenings, especially in inland cities like Belmopan and Orange Walk.

Can you swim in Belize in December?

Yes, the Caribbean Sea is still warm, at about 27°C (81°F). Swimming is comfortable, but wind and waves may affect conditions at each beach.

Is early or late December better for visiting Belize?

Generally early December is a good time to go for less holiday crowds. Late December has a festive feel, but more popular destinations and increased need for lodging.