Warmest Beaches in the U.S. (Year-Round) – Sun, Warm Water & Endless Beach Days

Looking for warm beaches in the U.S. you can enjoy in the winter — or anytime of year? While most American beaches cool down from November to March, a few destinations offer sun, warm sand, and swimmable water even in the coldest months. This guide highlights the warmest year-round beaches in the United States.

From Southern California’s mild winter beaches to Florida’s tropical warmth and Hawaii’s always-perfect climate, these are the top spots for endless sunshine.

Why These Beaches Stay Warm Year-Round

  • Southern latitudes and tropical climate zones
  • Warm ocean currents (especially the Gulf Stream & Hawaiian waters)
  • Consistently sunny weather with mild winters
  • Ideal for winter getaways and year-round swimming

Warmest Beaches in the U.S.

These beaches offer warm air and swimmable water almost all year — even during winter months.

Waikiki Beach, Oahu, Hawaii

Water temps stay 76–81°F year-round with warm, sunny weather and gentle waves.

Poipu Beach, Kauai

Consistently warm water and sunshine make this one of Hawaii’s best winter beaches.

Kaanapali Beach, Maui

Warm water, snorkeling, and perfect weather nearly every day of the year.

South Beach, Miami, Florida

Winter water temps 72–76°F with tropical breezes, nightlife, and turquoise water.

Key West, Florida

One of the warmest locations in the continental U.S. with Caribbean-like warmth.

Marco Island, Florida

Sunny, calm, and warm most months with soft white sand and peaceful Gulf waters.

Coronado Beach, San Diego, California

Mild winter air temps (65–75°F), golden sand, and gentle surf.

Santa Monica Beach, California

Warm sunny days even in winter, plus attractions and coastal bike trails.

Laguna Beach, California

Protected coves, great weather, and a mild climate all year long.

Where to Stay for Warm Winter Beaches

Hawaii

  • Oceanfront resorts in Waikiki
  • Beach villas on Maui
  • Sunny South Shore stays in Kauai

Florida (Warmest Mainland Choice)

  • South Beach boutique hotels & high-rise resorts
  • Key West tropical inns & waterfront stays
  • Marco Island beachfront hotels & condos

Southern California

  • San Diego beach resorts
  • Laguna Beach boutique hotels
  • Santa Monica oceanfront stays

When Are U.S. Beaches Warm Enough for Swimming?

LocationWinter Water TempWinter Air Temp
Hawaii76–81°F78–85°F
Miami / Florida Keys72–76°F75–82°F
Marco Island68–74°F70–80°F
San Diego58–62°F65–75°F

Best Warm Beaches by Category (Year-Round)

Best for Swimming

  • Waikiki Beach, Hawaii
  • Key West, Florida
  • Poipu Beach, Kauai

Best for Families

  • Coronado Beach, California
  • Marco Island, Florida
  • Kaanapali Beach, Maui

Best for Winter Sun Escapes

  • Miami Beach
  • Key West
  • Oahu & Maui beaches

Plan Your Beach Trip

Turn your beach search into a complete trip — book stays, discover experiences, and prepare like a pro.

🏨 Stays 🌊 Things to do 🏖️ Essentials 🧳 Packages ✈️ Flights ⛺ Beach Tents

FAQs — Warmest Beaches in the U.S.

What U.S. beach is warmest in winter?

Hawaii is the warmest overall; Key West and Miami are the warmest in the mainland U.S.

Where is the warmest ocean water in the U.S.?

Hawaii has the warmest ocean temperatures year-round.

Which beaches are warm enough for swimming in December?

Hawaii, Miami Beach, Key West, Marco Island, and parts of San Diego.

Is Southern California warm enough for winter beach trips?

Yes — warm air, mild sun, and great beach days, but the Pacific water is cooler.

Search Warm Beaches Across the U.S. Below

A to Z (title) Z to A (title) Latest listings Oldest listings Popular listings Random listings
Show Map