Cartagena Weather in December: Rain Reality, Heat & Island Boat Trip Tips

For any Caribbean getaway at the end of the year, Cartagena weather in December offers a lot of tropical heat and a significant reduction in precipitation as the month progresses. Daytime highs are average at 87°F (31°C) and nights are warm at 77°F (25°C). There is still a risk of rain, particularly early in the month, but December brings a definite turn to drier weather.

The combination of these makes December an attractive month for sightseeing, beach activities and trips to the islands. But warm weather doesn't always mean ideal sea conditions. Wind, waves and local forecasts are still important when determining time on the water.

In this guide you will learn what to expect in the heat, during the rain, and in the Caribbean water, as well as Rosario Islands trips, Christmas travel, and what else is happening in December. 

What Is Cartagena Weather Like in December?

Cartagena weather in December is hot, humid, and increasingly dry. Temperatures are consistently between 87°F (31°C) and 77°F (25°C) average daily highs and lows. The probability of having a wet day decreases rapidly as the month progresses, from approximately 23% at the start to approximately 4% at the end.

When travelers research weather in Cartagena Colombia in December, the most notable difference is not the temperature. Cartagena stays hot throughout the year. Instead, December brings a major decline in rainfall as the wetter months come to an end. 

December Temperature and Humidity

The weather in Cartagena in December still feels very tropical. Humid conditions can make the temperature warmer, even if it is not significantly lower in the evening. During long sightseeing days light clothing, frequent water breaks, and shade are helpful. 

When visiting the Walled City or Castillo San Felipe, mornings and later afternoon can be a more comfortable time of day to experience 

Sunshine and Daylight in December

Cartagena gets around 11.5 hours of daylight in December, leaving plenty of time for sightseeing and outdoor activities. Never take the tropical sun for granted because of cloud cover. Whether you are walking down the historic center or spending the day on a boat, sun protection is useful, don't forget a hat and plenty of water.

If you want a wider overview of what's happening in the weather and climate, our cartagena weather guide can give you an idea of what to expect during other months of the year. 

Cartagena December Weather at a Glance

These averages are helpful for planning and not a prediction for actual travel dates. 

The historical data also illustrates why it's not always accurate to say that December is a ‘wet' or ‘dry' month. At the beginning and end of the month, the weather is remarkably distinct. 

How Rainy Is Cartagena in December?

Understanding the rain reality is better done by observing the change in conditions. Cartagena weather in December starts with some influence from the wetter half of the year, but the risk of rain decreases as the month goes on.

According to WeatherSpark, the average rainfall in December is about 1.4 inches, with about 3.6 “wet days. This is significantly below the October average of approximately 6.1 inches and 15.8 wet days.

The Cartagena Colombia rainy season is thus important for travel planning. December is the end of an extended rainy season, with a generally drier month at the end. 

Does It Rain All Day in December?

Not always. A rainy forecast does not necessarily mean rain throughout the day.

• Tropical showers may come in and go in a flash.

• A few days could be dry even if there is a risk of rain.

• The average won't tell you what number of vacation days you will get.

• Check the latest weather in Cartagena December forecast closer to your planned activities.

• Don't cancel plans due to long-range rain forecast. 

What to Do When Rain Is Forecast

A flexible time schedule makes it easier to deal with occasional rain.

• Look at the forecast in the morning.

• Check the weather before weather dependent tours.

• Keep valuables, cameras, and phones out of the water.

• Bring a light rain jacket.

• Have an indoor alternative for entertainment.

• Don't assume that one shower will spoil the entire day.

What Is the Water Temperature in Cartagena in December?

Warm Caribbean water is one of the advantages of Cartagena weather in December. Surface water temperatures remain somewhat near 82°F (28°C) which is acceptable for most travelers to swim in.

That's not all, though! The safety of swimming, snorkeling, and boating activities that day depend on wind, waves, currents and area sea conditions. 

Is December Good for Swimming and Snorkeling?

With warm seas, swimming can be a fun activity all the way into December. Snorkeling can also be a pleasant experience in good visibility and marine conditions. Waves, wind, rainfall and currents can impact on comfort and visibility. Do not assume that the warm waters at your particular beach or snorkeling spot will be ideal conditions. 

Can You Visit the Rosario Islands in December?

Yes, Rosario Islands tours run during December but always confirm the current sea conditions before embarking. As the month goes on, December can get windier so sunshine doesn't always mean gentle seas.

A Private speedboat Rosario Island experience provides your group with a private opportunity to explore the islands and, when in doubt, your captain should decide.

In order to enhance the island day:

• Start early so you have plenty of time to enjoy the islands.

• Obtain current weather and marine forecasts before setting out on the water.

• Always verify with the operator before departing from your accommodation.

• Keep your schedule flexible in case wind, waves, or rain affect your plans.

• Don't schedule outdoor activities at a specific time.

• Follow your captain's advice if sea conditions change.

Larger groups can also consider a Private boat charter Rosario Island for a private day on the water. 

Best Boat Trips in Cartagena in December

With the warm waters of the Caribbean and the drop in rain, going on a boat trip is a natural part of many holiday trips in December. If you're planning to compare the island days, private charters, sunset activities and evening cruises, you have to browse Cartagena all tours prior to your trip. 

Take a Rosario Islands Day Trip

With a full day on the island you can get away from the city, and enjoy the Caribbean landscape that surrounds Cartagena. Additional swimming, relaxing and stops may be added depending on the day's weather and experience. Groups looking to spend the day together can consider a Rosario Island group boat day. Check weather and sea conditions before leaving. 

Take a Cartagena Sunset Catamaran Cruise

Cartagena can be experienced from the water without having to spend a full day out at sea. A Cartagena sunset catamaran offers a shorter evening experience, and a view of the city and the coast. It can be effective if your day schedule is already packed with sights and activities. 

Enjoy a Cartagena Bay Dinner Cruise

For those who wish to enjoy a time on the water combined with an evening meal, a Cartagena bay dinner cruise will provide another perspective of the city. It's also great for those travelers who want to stay in the water without taking the entire day in Rosario Islands. 

Best Things to Do in Cartagena in December

From history and culture to food, beaches, and festive activities, Cartagena in December has something to offer beyond boat trips. Some popular options include:

• Discover the Walled City: Stroll through the ancient streets, the colourful plazas and the colonial buildings.

• Visit Castillo San Felipe de Barajas: Visit one of the most known historic landmarks in Cartagena.

• Enjoy Cartagena's Christmas Atmosphere: See festive lights, decorations, markets, and seasonal activities around the city.

• Buy Local Gifts and Souvenirs: Explore Las Bóvedas, local markets, boutiques, and craft stalls.

• Eat Colombian Food: Sample local foods and traditional foods of the Christmas season.

• Plan Family Activities: Explore things to do in Cartagena with family for more ideas that fit all ages.

Christmas and New Year's Eve in Cartagena

Planning a Christmas in Cartagena Colombia takes a little more preparation than an average December visit. December 8 is the Immaculate Conception holiday in Colombia, while December 25 is Christmas Day.

Opening hours and services may change around Christmas and New Year's Eve. The exact arrangements for your travel year can differ, so:

• Please check opening hours for attractions.

• Make a reservation at popular restaurants in advance.

• Make reservations for special tours in advance.

• Check transport arrangements.

• Verify boat departures near the activity date.

• Check official schedules for Christmas and New Year's events.

Advance planning can be especially helpful during the second half of December during the holiday season. 

What to Pack for Cartagena in December

Packing for Cartagena weather in December is mostly about staying comfortable in heat and humidity while being ready for an occasional shower.

Bring:

• Lightweight, breathable clothing

• Swimwear

• Sunglasses

• A sun hat

• Sunscreen

• Comfortable walking shoes

• A water bottle that can be used over and over again.

• Lightweight rain protection

• Quick-drying clothes

• Waterproof electronic pockets.

• A small dry bag for trips on the boat.

Heat will be a much bigger factor in your decision than cool weather, so you'll likely be more interested in clothing that is comfortable in tropical weather. 

Tips for Planning a December Trip to Cartagena

For those looking for a Cartagena Colombia vacation in December, there's some simple habits that can help make your trip easier:

• Review the weather forecast in the morning from the local area.

• Make long, extended walks outside the hottest part of the day.

• Drink plenty of water throughout the day.

• Even on cloudy days, use sun protection products.

• Verify Rosario Islands trips before travelling.

• Obey your captain's instructions on marine conditions.

• Protect valuables during boat trips.

• Have another activity planned for wet weather.

• Book popular Christmas and New Year activities ahead.

• Leave some flexibility in your itinerary.

Historical weather is useful when planning the best time to visit Cartagena, but current forecasts can help make day-to-day plans when you arrive on location. 

How Does December Compare With Other Months?

Except for the rainy months preceding it, Cartagena weather in December is generally drier. Let's make a simple overview to compare December with other months:

• August: Cartagena weather in August typically brings more rainfall, along with hot and humid conditions.

• October: October is historically wetter than December, with a higher chance of rainy days.

• November: November is generally wetter, and as December nears, rainfall is typically reduced.

• January: January is usually drier than December and one of the least rainy months of the year in Cartagena. 

Final Thoughts

Cartagena weather in December can be quite warm, tropical, and slightly less rainy as the month goes on, with warm Caribbean waters. There are lots of chances to sightsee, swim, visit the islands and spend evenings on the water. The weather conditions and ocean weather can still fluctuate from one day to the next. Check the forecast before departing, be flexible and obey your captain in windy and rough conditions.

When you are ready to get on the water, check out our Cartagena boat rental options to book a Rosario Islands cruise or evening cruise to the islands. Need help choosing a tour? Just reach out to us via WhatsApp and we'll help you get your experience planned out. 

Frequently Asked Questions

Is December a Good Time to Visit Cartagena?

December can be a good month for visiting if you want to enjoy hot Caribbean weather with the rain tapering off towards the end of the wet season. Late December marks the beginning of the dry season in Cartagena, although it is very variable from year to year. Christmas and New Years can also be busier times, so it may be worth considering booking your most important activities in advance. 

Is December Part of Cartagena's Rainy Season?

December is a transitional month. According to the historical definition used by WeatherSpark, the rainy season runs up to December 30, but this is rapidly tapering off. As such, December can be very variable both at the beginning and towards the end of the month. 

Can You Swim in Cartagena in December?

Yes. The average surface water temperature around Cartagena is around 82°F (28°C), which is warm enough for splashing about in for most people. Warm water temperatures do not necessarily mean it is safe to go swimming, so make sure you are checking weather conditions, current strength, waves, and local advice before getting in the water. 

Can You Visit the Rosario Islands in December?

Yes, you can visit the Rosario Islands in December, when the sea is calm enough. Wind speeds are also increasing throughout the month according to historical averages, so it is always worth checking current conditions for your chosen adventure before setting off.