In many parts of the United States, September marks the transition from summer to fall. For travelers who want to enjoy warm weather a little longer, several destinations provide extended summer conditions while avoiding some of the peak-season crowds. These locations balance outdoor activities, cultural events, and favorable climates during early autumn.
This guide highlights 11 U.S. destinations where September often still feels like summer. Each entry includes practical notes on weather, activities, and travel considerations.
1. San Diego, California
Known for its consistently pleasant weather, San Diego’s September days often hover in the mid-70s Fahrenheit, ideal for those not ready to leave summer behind. Locals and visitors alike fill the beaches, whether it’s for surfing at Pacific Beach or strolling along La Jolla’s scenic shores.
September also brings cultural events like the San Diego Bayfair, where powerboat races energize Mission Bay. Outdoor dining along the waterfront, or a sunset walk at Sunset Cliffs Natural Park, offer memorable experiences without summer’s high-season congestion.
As children return to school, crowds thin, making popular sites such as Balboa Park and Old Town more accessible. The cooler evenings encourage exploration of the Gaslamp Quarter’s culinary scene. Travelers should still book accommodations in advance for major event weekends, but overall the city remains relaxed and inviting as summer lingers.
2. Miami, Florida
Sun-seekers find Miami in September to be a continuation of summer, with daytime highs near 87°F and the Atlantic Ocean remaining warm enough for hours of swimming. Art Deco architecture lines South Beach, while the bright colors of Wynwood beckon for photo walks.
Rain showers are common, often brief, yet they contribute to lush city gardens and tropical foliage. Although hurricane season peaks, local businesses operate as usual and many travelers opt for flexible bookings and travel insurance.
Cuban coffee shops, beachfront boardwalks, and outdoor markets thrive, with festivals occasionally filling the calendar. For those prepared to monitor weather updates, September’s Miami offers a blend of urban energy and beachfront relaxation. Hotel rates may be lower than peak winter months, providing extra value for flexible visitors.
3. Charleston, South Carolina
Cobblestone streets meet balmy afternoons as Charleston’s late-summer warmth lingers through September. Those who appreciate architecture and history stroll the city’s historic district, where moss-draped oaks create a timeless atmosphere.
Nearby beaches like Sullivan’s Island and Folly Beach remain welcoming, with fewer visitors than midsummer. Restaurants serve up Lowcountry cuisine, and seafood is at its peak. The city’s calendar features events such as the MOJA Arts Festival, celebrating African-American and Caribbean heritage.
September is also a favorable time for carriage rides or walking tours, as humidity gradually decreases and evenings grow more temperate. For travelers seeking a blend of culture, history, and lingering summer weather, Charleston offers a steady pace and southern hospitality.
4. Honolulu, Hawaii
Honolulu’s beaches exude a laid-back charm in September, when daytime highs rest comfortably in the mid-80s and the Pacific remains warm for swimming. The city’s trade winds provide cooling breezes, making daily strolls along Waikiki inviting.
Surfing and snorkeling thrive on the south shore, while hikes up Diamond Head offer panoramic views without the heaviest tourist crowds. Many hotels lower their rates after the peak summer months, making it more accessible for last-minute planners.
Farmers markets and food festivals showcase Hawaii’s agricultural bounty, and evening luaus highlight traditional music and dance. September in Honolulu is marked by a blend of active days and relaxing evenings, appealing to a spectrum of travelers seeking summer’s final moments.
5. Austin, Texas
Barton Springs Pool becomes a lifeline for Austinites in September, as summer heat continues but evenings invite outdoor gatherings. With average highs around 90°F, the spring-fed pool stays invitingly cool and attracts locals and visitors alike.
As nights settle in, live music venues fill with the sounds of local bands, reflecting Austin’s reputation as the “Live Music Capital of the World.” Food trucks and outdoor patios remain lively, offering tacos, barbecue, and regional brews.
September also marks the beginning of fall festival season, with events like Austin City Limits approaching. For those who relish both urban adventure and natural escapes, this Texas city maintains its vibrant energy as summer winds down.
6. New Orleans, Louisiana
Jazz melodies drift through the air in New Orleans as September brings a blend of persistent heat and the city’s energetic cultural calendar. The French Quarter buzzes with life, and street musicians add to the distinctive ambiance.
The Louisiana Seafood Festival and other events introduce visitors to regional flavors, while riverfront walks provide a respite from the activity. Hurricane season is a consideration, so travelers should stay updated on forecasts and flexible with plans.
Balcony dining, historic streetcars, and open-air markets showcase the city’s enduring appeal. With fewer summer tourists, September can be a rewarding time to explore the Crescent City’s traditions and creativity.
7. Santa Fe, New Mexico
Santa Fe in September is a canvas of warm days and cool nights, inviting exploration of its adobe-lined streets and mountain views. The annual Wine & Chile Fiesta brings chefs, vintners, and food enthusiasts together, creating a unique culinary atmosphere.
Art galleries and museums remain vibrant, while hiking trails in the nearby Sangre de Cristo Mountains offer scenic escapes. Downtown plazas fill with music and local markets selling traditional crafts.
With lower humidity and crisp evenings, outdoor patios become popular spots for dining or simply soaking in the ambiance. Santa Fe’s September is characterized by a blend of art, food, and southwestern landscapes.
8. Outer Banks, North Carolina
September in the Outer Banks signals quieter beaches and ocean temperatures still in the 70s. After Labor Day, many families have departed, leaving behind peaceful stretches of sand and open space for kite flying or fishing.
The Cape Hatteras Lighthouse provides a classic photo opportunity, and local eateries serve fresh seafood. Surf shops and bike rentals remain open, catering to those seeking active days.
However, the Atlantic hurricane season remains active, so visitors are advised to keep an eye on local weather. For travelers seeking a relaxed, coastal atmosphere, September offers a distinct sense of tranquility on these barrier islands.
9. Las Vegas, Nevada
Las Vegas in September retains its desert heat, with daytime highs often reaching 95°F. Hotel pools become social hubs, where visitors cool off before taking in shows or exploring the Strip’s attractions.
Red Rock Canyon, just outside the city, remains open for early morning hikes, offering a break from the urban pace and panoramic views of red sandstone formations. Midweek hotel rates tend to drop, making luxury stays more accessible.
Concerts, culinary festivals, and new restaurant openings fill the calendar, and the city’s nightlife continues late into the evening. For those seeking both entertainment and sun, Las Vegas offers an energetic September escape.
10. San Juan, Puerto Rico (U.S. Territory)
San Juan is where colonial history meets Caribbean vibrancy, and in September both the city and its beaches remain animated by summer’s energy. Ocean temperatures are inviting for swimming and snorkeling, with El Morro and San Cristóbal forts standing guard over the harbor.
Plaza squares fill with music and food vendors, while nearby Piñones offers laid-back beachfront eateries. U.S. citizens can visit without a passport, simplifying travel logistics.
September falls during Atlantic hurricane season, so travelers should remain attentive to weather advisories. Despite this, San Juan’s rich culture, colorful streets, and warm evenings make it an appealing late-summer destination.
11. Key West, Florida
In Key West, summer holds on throughout September with temperatures in the high 80s and humidity fueled by the Gulf and Atlantic. The island’s laid-back style is evident on Duval Street, where art galleries and cafés open their doors to wanderers.
Water sports abound, from snorkeling above coral reefs to boating excursions at sunset. The famous Southernmost Point is a popular photo spot, and Hemingway’s former home draws literary fans.
Travelers should keep hurricane season in mind, as weather can change rapidly. Even so, Key West’s vibrant nightlife, historic sites, and tropical scenery offer a distinctly Floridian way to savor the last of summer.
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