8 Tropical Paradises in the US You Can Visit Without a Passport (2025)

Dreaming of swaying palms and turquoise waters but don’t have a passport? Join the club! After spending the past three years exploring America’s tropical escapes (tough job, I know), I’ve put together this guide to the best tropical destinations right here in the US. My last trip to the Florida Keys in February 2024 confirmed what I already suspected—you absolutely don’t need to leave the country to get those tropical vacation vibes.

Quick Answer: Best Tropical Places in the US

• Most accessible: Key West, Florida (direct flights from many US cities)
• Best beaches: Maui, Hawaii (white, black, AND red sand beaches)
• Budget-friendly: Gulf Shores, Alabama (30-40% cheaper than Florida beaches)
• Most unspoiled: Dry Tortugas National Park, Florida (70 miles offshore, almost no development)
• Off the radar gem: Culebra, Puerto Rico (like the Virgin Islands without the crowds)
• Best for activities: Kauai, Hawaii (hiking, kayaking, snorkeling all in one place)
• Easiest tropical weekend: South Padre Island, Texas (warm Gulf waters year-round)
• Most Caribbean-like: St. John, US Virgin Islands (80% national park, no passport needed)

I still laugh about the time I packed a passport for my trip to Puerto Rico… completely unnecessary for US citizens! Saved it for my next international trip but felt pretty silly at the time.

What Makes a Place “Tropical” in the US?

Before diving into specific destinations, let’s be clear about what “tropical” actually means in the US context. Technically speaking, the only true tropical areas in the US (located between the Tropic of Cancer and Tropic of Capricorn) are Hawaii, southern Florida, Puerto Rico, and the US Virgin Islands.

These locations offer:

• Year-round warm temperatures (rarely below 70°F/21°C)
• Palm trees and tropical vegetation
• Clear, warm waters suitable for swimming most of the year
• Tropical or subtropical climate classifications

I’ve also included a few “tropical-adjacent” spots that might not be geographically tropical but definitely deliver those vacation vibes during summer months. My sister keeps arguing that Virginia Beach should count as “tropical” in July, but I’m drawing the line somewhere, folks!

Where Are the Most Tropical Places in the US?

1. Hawaiian Islands

Hawaii is the uncontested champion of tropical destinations in the US. Each island offers its own flavor of paradise:

Maui: My personal favorite for its incredible diversity. Where else can you swim at a white sand beach in the morning, drive through a bamboo forest by lunch, and watch sunset from a volcano in the evening? The Road to Hana nearly killed me with its 600+ hairpin turns, but those waterfalls and black sand beaches were absolutely worth the carsickness.

Kauai: The “Garden Isle” is ridiculously lush and green. The Na Pali Coast literally looks fake in person—those emerald cliffs dropping into turquoise water seem impossible. Got caught in a sudden downpour during a kayak trip up the Wailua River and ended up laughing hysterically as we paddled through the warm rain. Some of my favorite travel memories ever.

Big Island (Hawaii): Where else can you go from snow (on Mauna Kea) to tropical beaches in the same day? The diversity here is mind-blowing. The night snorkeling with manta rays near Kona was one of the coolest experiences of my life—these massive creatures gliding inches from my face in the dark ocean.

Oahu: More developed but still packing tremendous tropical punch. The North Shore has that laid-back surfer vibe while Waikiki gives you city amenities with beach access. Hiked to Manoa Falls through what felt like a scene from Jurassic Park—so green it almost hurt my eyes.

The downside to Hawaii? It’s expensive and a long flight from the mainland. I saved for nearly two years for my first Hawaiian vacation. Worth every penny, but definitely not a budget destination.

2. Florida Keys

The Florida Keys are the most accessible tropical paradise for most Americans, and they deliver the goods:

Key West: The southernmost point in the continental US feels worlds away from mainland America. The island vibe is strong here—chickens roaming freely, colorful conch houses, and that end-of-the-road feeling that makes everyone move a little slower. Sunset at Mallory Square is basically a nightly festival, though honestly, it’s gotten a bit too crowded lately.

Key Largo: The diving capital of the Keys. John Pennekamp Coral Reef State Park offers amazing snorkeling just offshore—swam with a sea turtle for nearly 10 minutes here! The water clarity rivals what I’ve seen in the Caribbean.

Marathon: More laid-back than Key West with some fantastic beaches. Sombrero Beach was practically empty on a Tuesday morning when I visited—had turquoise waters all to myself for hours.

Dry Tortugas National Park: Taking the ferry 70 miles offshore to this remote park was a highlight of my Keys trip. Crystal clear waters surround a massive 19th-century fort, with some of the best snorkeling I’ve found in the US. Camping overnight here is still on my bucket list—imagine those stars!

The Keys are more affordable than Hawaii but still pricey during high season (winter). Hurricane season (June-November) brings risks but also lower prices. I snagged a waterfront hotel in Marathon for $149/night in October—the same room goes for $400+ in February.

For those specifically looking to escape cold winter months, our guide to warm December destinations in the USA offers season-specific recommendations.

3. Puerto Rico

As a US territory, Puerto Rico offers incredible tropical experiences without needing a passport:

San Juan: Historic colonial architecture meets beautiful beaches. The contrast between Old San Juan’s cobblestone streets and nearby Condado’s resort scene is fascinating. Spent an afternoon getting lost in the colorful streets of Old San Juan, finding the best piña colada of my life at some tiny bar I can never remember the name of.

Vieques: This smaller island off Puerto Rico’s east coast boasts some of the most uncrowded beaches I’ve seen. The bioluminescent bay here is magical—kayaking through water that lights up with every stroke feels like something from a fantasy movie.

Culebra: Home to Flamenco Beach, regularly rated among the world’s best beaches. The water here is so clear it barely looks real. Rented a jeep to explore the island’s hidden beaches and felt like I’d discovered places no one else knew about (though the Instagram posts from others proved that wrong).

El Yunque Rainforest: The only tropical rainforest in the US National Forest system. Hiking to the waterfalls was hot and humid but absolutely worth it. Jumped into the cool pools below La Mina Falls and immediately felt 10 years younger.

Puerto Rico offers tremendous value—prices are generally lower than Florida while delivering equally (or more) tropical experiences. The laid-back pace and mix of American conveniences with Caribbean culture creates a unique experience.

4. US Virgin Islands

The USVI offers probably the most Caribbean-like experience without leaving US territory:

St. John: With 80% of the island protected as a national park, St. John remains blissfully undeveloped. Trunk Bay’s underwater snorkel trail is perfect for beginners. Rented a cottage up in the hills with jaw-dropping views for surprisingly reasonable rates in May.

St. Thomas: More developed with larger resorts and cruise ship facilities, but still offering stunning beaches and clear waters. Magens Bay lived up to the hype—that perfect crescent of white sand against turquoise water looks like a postcard.

St. Croix: The largest of the US Virgin Islands has a more local feel. The tide pools at Annaly Bay were a hidden gem I found only because a local at my hotel drew me a map on a napkin.

While flight costs to the USVI can be high, accommodations and food can be surprisingly reasonable outside peak season. My shoulder season visit (May) meant perfect weather, half-empty beaches, and hotels at 30% off winter rates.

5. South Texas

The southern tip of Texas offers some surprisingly tropical experiences, especially during summer:

South Padre Island: This barrier island boasts 34 miles of white sand beaches and warm Gulf waters. The water temperature in summer rivals the Caribbean. Rented a beachfront condo for a long weekend in July and was blown away by how tropical it felt—palm trees, clear water, the works.

Laguna Atascosa National Wildlife Refuge: Not far from South Padre, this refuge feels tropical with its palms, resacas (oxbow lakes), and exotic birds. Spotted a roseate spoonbill here that looked like it belonged in some exotic documentary.

The South Texas tropical season is shorter than Florida or Hawaii, but during summer months, it delivers a surprisingly authentic tropical experience at much lower prices. The beach towns here are way more affordable than Florida equivalents.

6. Southern California

While not technically tropical, parts of Southern California create a convincing impression during summer months:

Coronado Island: The Hotel del Coronado with its red turrets against white sand and palm trees creates an instantly tropical feel. The water’s colder than true tropical destinations, but on a hot summer day, you might not care.

Catalina Island: Just 22 miles offshore from Los Angeles but feels worlds away. The clear waters around Avalon Bay and the hilltop views of the Pacific create a Mediterranean-meets-tropical atmosphere. Rented a golf cart to tour the island and kept stopping just to stare at the views.

Southern California’s “tropical” season is limited to summer and early fall, and the water never gets as warm as Florida or Hawaii. But the palm-lined beaches and resort atmosphere can scratch that tropical itch if you’re on the West Coast.

7. Gulf Coast of Alabama and Florida

The “Emerald Coast” along the Florida panhandle and Alabama delivers surprisingly tropical experiences:

Gulf Shores/Orange Beach, Alabama: These twin beach towns offer sugar-white sand and clear emerald waters that rival the Caribbean during summer months. Prices are 30-40% lower than similar accommodations in South Florida.

Destin/Fort Walton Beach, Florida: Locals call this the “Emerald Coast” for good reason—the water color is stunning. Henderson Beach State Park has some of the whitest sand I’ve ever seen, seriously rivaling the Bahamas.

Santa Rosa Island: This barrier island near Pensacola has sections that feel completely undeveloped. Watched dolphins playing just offshore while having the beach almost completely to myself on a weekday morning.

The Gulf Coast isn’t tropical year-round (winters can get chilly), but from May through October, it delivers a convincing tropical experience at prices well below what you’d pay in Hawaii or the Keys.

8. Southern Louisiana

Parts of Louisiana offer a unique take on tropical environments:

Grand Isle: Louisiana’s only inhabited barrier island has a raw, wild tropical feel during summer, with warm Gulf waters and palms swaying in the breeze. It’s definitely not a manicured resort experience, but that’s part of its charm.

Jean Lafitte National Park (Barataria Preserve): This swampy, subtropical wilderness just outside New Orleans feels like another world. Hiked the boardwalk trails through palm-filled swamps in August and literally had to wring out my shirt afterward from the humidity. Spotted an alligator just chilling right next to the trail!

Louisiana’s tropical credentials are limited to the warmest months, but the unique mix of Cajun culture with subtropical environments creates an experience you can’t find elsewhere.

QUICK FACTS: US Tropical Destinations

• Southernmost Point: Key West, Florida (mainland US); Hawaii (all US)
• Warmest Winter Temperatures: Hawaii and Puerto Rico (avg. 75-85°F/24-29°C)
• Clearest Waters: Dry Tortugas (Florida) and Trunk Bay (St. John, USVI)
• Most Rainfall: Kauai, Hawaii (Mt. Waialeale averages 450 inches annually!)
• Cheapest Tropical Option: Gulf Shores, Alabama (summer) or Puerto Rico (year-round)
• No Passport Needed: Hawaii, Florida, Puerto Rico, USVI, Guam, American Samoa
• Hurricane Season: June-November (Atlantic); hurricane risk varies by location
• Best Bargain Season: May and September-October for most locations

When is the Best Time to Visit Tropical US Destinations?

Timing can dramatically impact your tropical US vacation. Here’s a breakdown:

Hawaii

• Best time: April-May and September-October (shoulder seasons)
• Budget time: October-November (excluding Thanksgiving)
• Avoid: December-January (peak prices and crowds)

I visited Maui in early May and hit the jackpot—perfect weather, smaller crowds, and hotel rates about 30% below winter prices. The ocean was calm enough for great snorkeling, and I never needed dinner reservations more than a day in advance.

Florida Keys

• Best time: November-May (dry season with perfect temperatures)
• Budget time: September-November (excluding holidays)
• Avoid: March (spring break crowds and peak prices)

My February Keys trip was weather perfection—80°F days, low humidity, and crystal clear waters. But the hotel prices! Paid nearly double what the same room would cost in October. Worth it for the perfect weather, though.

Puerto Rico

• Best time: Mid-April to June (after winter crowds, before peak hurricane season)
• Budget time: September-November (hurricane risk but great deals)
• Avoid: December-March (highest prices with somewhat unpredictable rainfall)

Visited Puerto Rico in late April and felt like I’d discovered a secret—perfect weather, no crowds, and shoulder season prices. The ocean was calm, everything was lush and green, and I needed no reservations for popular restaurants.

US Virgin Islands

• Best time: April-June (ideal weather, fewer crowds)
• Budget time: September-November (significantly lower rates)
• Avoid: December-March (cruise ship crowds and highest prices)

My May trip to St. John meant some businesses were closing for their off-season breaks, but the upside was half-empty beaches and no need to fight for restaurant reservations.

What Should You Pack for a Tropical US Vacation?

Based on multiple trips (and many packing mistakes), here’s what I recommend:

Essentials for Any Tropical Destination:

• High-quality reef-safe sunscreen: The Hawaiian sun gave me the worst sunburn of my life despite applying SPF 50. The good stuff is worth the extra money!
• Rash guard/swim shirt: Game-changer for snorkeling without becoming a lobster
• Water shoes: Saved me from painful encounters with rocks and sea urchins
• Quick-dry clothing: Regular cotton becomes miserably heavy in tropical humidity
• Insect repellent: Those sunset beach walks come with mosquitoes
• Waterproof phone case: Got amazing underwater photos with just my iPhone

Don’t Bother Bringing:

• Too many “nice” outfits: Even upscale restaurants in most tropical US destinations accept resort casual
• Hair styling tools: The humidity wins. Every. Single. Time.
• Multiple pairs of jeans: Too hot for most tropical locations (though one pair can be useful)

I’ve learned to pack about 30% less clothing than I think I need for tropical trips. You end up in swimwear most days anyway, and many accommodations have laundry facilities.

FAQ About Tropical Destinations in the US

Are there any affordable tropical destinations in the US?

Absolutely! Puerto Rico offers tremendous value, often with lower prices than Florida for similar experiences. Gulf Shores/Orange Beach, Alabama delivers white-sand beaches and clear waters for about 30-40% less than Florida’s east coast. Even Hawaii can be reasonable in the shoulder seasons with smart planning.

When is hurricane season for US tropical destinations?

The Atlantic hurricane season runs June through November, affecting Florida, Puerto Rico, USVI, and the Gulf Coast. Hawaii rarely gets direct hurricane hits but can see tropical storms, most commonly July through September. I’ve traveled successfully during hurricane season many times—travel insurance is key, along with flexibility.

Which US tropical destination has the best beaches?

This is subjective, but I’d give the crown to Maui, Hawaii for diversity (white, black, and red sand beaches) and Flamenco Beach on Culebra, Puerto Rico for pure postcard perfection. For accessibility and facilities, Gulf Shores, Alabama offers tremendous value with sugar-white sand that rivals the Caribbean.

Can you recommend a tropical US destination for families?

Absolutely! The Florida Gulf Coast (Destin/Fort Walton area) offers a perfect combination of beautiful beaches, clear shallow water, and family-friendly accommodations at reasonable prices. Oahu, Hawaii provides a great mix of tropical experiences with kid-friendly amenities, though at a higher price point.

Bottom Line: America’s Own Tropical Paradises

After exploring tropical destinations across the US for the past few years, I’ve learned that you can absolutely get those postcard-perfect tropical experiences without needing a passport. From Hawaii’s dramatic landscapes to the Florida Keys’ laid-back island vibes to Puerto Rico’s unique blend of Caribbean culture with American conveniences, there’s a tropical paradise for every preference and budget.

If you’re dreaming of crystal clear waters and swaying palms, start with your priorities: Are you seeking adventure, relaxation, culture, or nature? Do you prefer developed resorts or untouched wilderness? Is budget or travel time your biggest constraint?

For my money, Puerto Rico offers the best overall value, combining authentic tropical environments with reasonable prices and easier access than Hawaii. But each destination has its own magic—the bioluminescent waters of Vieques, the Na Pali coast of Kauai, or the quirky charm of Key West.

The best part? These tropical escapes are all just a domestic flight away, no passport required. Your next tropical vacation might be closer—and more affordable—than you think.