The best warm places to travel this winter (2026-27)

Winter sun is having a moment. Bangkok and Rio are among the most booked cities on the planet for 2026, and the Caribbean's high season is filling up fast. The good news is that December through March is genuinely the best window for most warm destinations, not just the most popular one. Hurricane season ends November 30, sargassum seaweed mostly disappears from Caribbean beaches until spring, and the southern hemisphere is in full summer.

The catch is that everyone else knows this too. So this guide is about picking the right place for the right week, booking smart, and not getting tripped up by the entry rules that changed in 2026.

Mexico

Mexico is the easiest winter escape for most North Americans. It's close, flights are frequent, and you can pick from three completely different trips.

The Mexican Caribbean (Cancún, Tulum, Playa del Carmen)

This is peak season for the Yucatán coast, and for good reason. Seas are calm, humidity drops, and December through March is the most reliable stretch for clear water. Sargassum, the brown seaweed that piles up on these beaches, typically peaks between late May and August and is rarely a problem in winter.

• Cenotes - The freshwater sinkholes around Tulum and Valladolid stay cool and clear year round. Go early to beat the tour buses.
• Isla Holbox - A car-free island off the northern tip of the peninsula. Golf carts, sand streets, and a much slower pace than Cancún.
• Chichén Itzá - Arrive at opening time. By late morning in high season it's packed.

Baja California for whale season

Every winter, gray whales swim down from the Arctic to give birth in Baja's warm lagoons. The 2026-27 season runs roughly December to mid-April. For the famous "friendly" encounters, where mothers bring calves right up to small boats, head to San Ignacio Lagoon or Puerto Adolfo López Mateos between mid-February and mid-March. Los Cabos and La Paz are the easy bases, with humpback whales offshore and warm, dry weather all season.

Michoacán for the monarch butterflies

Millions of monarch butterflies spend the winter in the fir forests west of Mexico City. The sanctuaries usually open in mid to late November and close at the end of March, with February the peak. El Rosario and Sierra Chincua in Michoacán are the main ones. Entry is around 150 pesos for adults. It's a high-altitude day trip, so bring a jacket. It's warm in the sun and cold in the shade.

If you're combining Mexico with the US or Canada, our Mexico eSIM plans run on Telcel, the country's biggest network, which also covers the sanctuaries and most of Baja's towns.

The Caribbean

Winter is the Caribbean's high season. The weather is dry and breezy, the water is clear, and the 2026 sargassum outlook (which predicted a heavy summer year) points to clean beaches through the winter months.

• Puerto Rico - US citizens don't need a passport, there are direct flights from most big US cities, and it's US dollars everywhere. Old San Juan, the El Yunque rainforest, and the bioluminescent bays at Fajardo and Vieques make it easy to fill a week.
• Dominican Republic - The best-value all-inclusive island in the region. Punta Cana for beaches, Samaná Bay for humpback whales from mid-January to March.
• Barbados and Saint Lucia - More expensive, but quieter and more polished. Saint Lucia's Pitons are the most dramatic scenery in the eastern Caribbean.
• Turks and Caicos - Grace Bay regularly makes "world's best beach" lists. Pricey, but the water really is that color.

Brazil

When it's winter up north, it's high summer in Brazil. Beaches are full, the cities are buzzing, and the season builds to two of the biggest parties on Earth.

• New Year's Eve in Rio - Réveillon on Copacabana Beach draws millions of people dressed in white for fireworks over the water. Book accommodation months ahead.
• Rio Carnival 2027 - February 5 to 10, 2027. The Special Group samba schools parade through the Sambadrome on February 7, 8 and 9, and the Champions' Parade is February 13. Street parties (blocos) run all over the city for weeks before.
• Florianópolis - An island city in the south with 40-plus beaches, great surf, and a calmer feel than Rio. December to March is the season.
• Salvador and the northeast - Warm sea, colonial streets in Pelourinho, and the most distinctive food in the country.

For a city-by-city plan, see our Brazil travel guide. Brazil data is cheap. Brazil eSIM plans on the Vivo network start from $6.99.

Costa Rica

Costa Rica's dry season lines up almost exactly with northern winter. Guanacaste, the Pacific northwest, has the longest and most reliable dry spell in the country, with sunny days in the 80s°F and very little rain from December well into April.

• Guanacaste beaches - Tamarindo for surf and nightlife, Playa Conchal and the Papagayo Peninsula for calmer water.
• Arenal and Monteverde - Volcano views, hot springs, hanging bridges, and cloud forest. Pack a layer, since it's cooler up there.
• Manuel Antonio - The national park where sloths and monkeys come to the beach. Tickets are timed and sell out in high season, so book ahead online.

Colombia

Colombia keeps climbing up winter wish lists, and the value is hard to beat. December to March is the dry season on the Caribbean coast.

• Cartagena - The walled old town is at its best in the evening breeze. Day trips run to the Rosario Islands for clear water.
• Barranquilla Carnival - February 6 to 9, 2027. It's Colombia's biggest festival and a UNESCO-listed tradition. Hotels fill early.
• Tayrona National Park - Jungle meets beach near Santa Marta. The park closes for a few short periods each year for ecological rest, so check dates before you go.
• Medellín - Not a beach city, but its "eternal spring" climate makes it an easy add-on for a few days.

Thailand

Bangkok is one of the most booked destinations in the world this year, and winter is the best time to go. November through February is the "cool" season: still hot by most standards, but drier and less humid. It's prime time for the Andaman coast islands (Phuket, Krabi, Koh Lanta) and for Chiang Mai in the north.

Thailand also has some of the cheapest mobile data anywhere. Plans start from $7.99, and you'll find them on our main store along with combined Thailand, Singapore and Malaysia plans if you're doing a regional loop.

How to book winter sun without overpaying

• Go early in December - Flights and hotels in the first two weeks of December typically run 15 to 20 percent cheaper than the Christmas to New Year's stretch.
• Avoid the big holiday weeks - Christmas, New Year's, Presidents' Day weekend, and US spring break (March) are the most expensive and crowded weeks across Mexico and the Caribbean.
• Book festivals now - For Rio and Barranquilla Carnival in February, people who book in the fall get a real choice of hotels. By December you're picking from what's left.
• Check entry rules twice - Brazil's e-visa, Thailand's new 30-day limit, and Colombia's Check-Mig all changed or tightened recently. Check the official sites a week before you fly.

Staying connected on a winter sun trip

Beach trips use less data than you'd think, and more than you'd like at the worst possible moment. Maps, ride-hailing apps, WhatsApp, and uploading photos add up to around 1GB every few days for most people. Video calls and streaming push it much higher. For a one-week beach trip, 3GB to 5GB is plenty. For two weeks or more, or if you work remotely, go for 10GB.

Many US phone plans include Mexico, but in the Caribbean, Brazil, Colombia and Thailand the big carriers' roaming day passes run around $12 a day. A local eSIM is a fraction of that, and you keep your WhatsApp number. If you're not sure whether an eSIM or a physical SIM is right for you, our eSIM vs SIM card guide walks through it. Planning a trip before Christmas instead? Our fall travel guide covers where to go through November.

Information sourced from Booking.com and Time Out trending-destination data, Brazil's e-visa portal, Thailand's Immigration Bureau, Migración Colombia, the Quintana Roo state government, Mexico's SEMARNAT, and regional sargassum outlooks. Correct as of October 2026. Entry requirements, fees, and festival dates can change, so verify with official sources before you travel.