St. Croix in September: Weather, Activities, & Travel Tips
- Polly Clover
- Jul 31
- 5 min read
If you’re dreaming of a Caribbean escape with fewer tourists and a slower pace, St. Croix in September might be the perfect fit. You can enjoy warm weather, tropical beauty, and a laid-back vibe that’s hard to beat.
While September is part of hurricane season, the weather isn’t always bad — many days are sunny with only brief showers. You can also appreciate lower prices on accommodations and excursions, fun activities, and local events.
This guide covers everything you need to know, including weather details and the best things to do to help you plan your vacation to the U.S. Virgin Islands.
St. Croix Weather in September
St. Croix weather in September is typically hot and humid, with a mix of sunshine and scattered rain showers. Daytime highs average around 86°F, while nighttime lows dip to about 76°F. There’s an average rainfall of 5.9 inches during September, but most showers pass quickly.
Because September is in the middle of the Atlantic hurricane season, from June through November, we recommend keeping an eye on weather forecasts. While major storms aren’t guaranteed, it’s always a good idea to have flexible travel plans and travel insurance.
Is September a good time to visit St. Croix?
September is a good time to visit St. Croix if you're looking to avoid crowds and take advantage of off-season deals. Beaches are also relatively quiet, making for the perfect relaxing getaway.
While there aren’t as many events in the low season, there are a few you can enjoy, including the Annual Labor Day 5K and drag brunch.
While some businesses may have limited hours or take seasonal breaks, there are many outdoor activities to enjoy, including kayaking, snorkeling, and hiking.
St. Croix in September: Travel Considerations
Before booking your vacation to the U.S. Virgin Islands in September, here are a few important things to keep in mind:
Hurricane season: September falls during hurricane season, so check weather updates and consider refundable bookings and travel insurance.
Warm weather: It’s hot and humid during September, so plan your outdoor activities in the morning or early evening, wear cool clothes, and stay hydrated.
Off-season closures: Some restaurants or shops may reduce hours or temporarily close for the season, but many businesses remain open.
Transportation: It’s best to rent a car to explore the island. While taxis are available, they can be pricey or hard to find during the slow season.
Respect the locals: Although St. Croix is an amazing vacation destination, be mindful of the locals who live here full-time. Be kind and courteous — a simple “good morning” or “good afternoon” goes a long way here.
St. Croix in September: Events & Activities
Whether you're visiting for rest, adventure, or a bit of both, St. Croix offers plenty to do in September. From scenic outdoor excursions to fun local events, it's a great time to experience the island's unique mix of nature, culture, and community. We recommend trying out a few different activities to get the most out of your trip!
Labor Day 5k
When: September 1st, 2025 at 6 AM
Kick off the month with the Annual Labor Day 5K, hosted by The St. Croix Road Racing Committee. The race starts in Southgate and ends in Christiansted, with a return shuttle available. This community event is open for runners and walkers who want a fun and active way to experience the island.
Drag Queen Brunch
When: September 6th and 7th, 2025 at 10 AM and 1 PM
Head to Sand Castles on the Beach for a drag brunch hosted by Liquor Mini. The show features iconic performers including Candi Stratton (Cher), Dorae Saunders (Tina Turner), and Penelope Devereaux. For $45 per person, you’ll get brunch and a fun show by the beach.
Salt River Bay Kayaking
When: Daily
September is a beautiful time for kayaking through Salt River Bay National Historical Park. The mangroves are lush and vibrant, offering a unique and peaceful atmosphere.
Virgin Kayak Tours offers guided tours to explore the area, including the Daytime Historical and Ecological Tour, Sunset and Moonlight Tour, and Bioluminescent Tour. You can also rent kayaks and stand-up paddleboards for your own adventure. Best of all, the Hobie pedal kayaks are easy for all level kayakers and allow you to have an incredibly relaxing experience.
Snorkeling or Diving
When: Daily
Snorkeling or diving is a perfect way to cool off on a warm September day in St. Croix. Some of the best spots are Frederiksted Pier and Dorsch Beach, known for their clear-blue water and diverse marine life. You can rent gear from or take a diving course with Cane Bay Dive Shop in Frederiksted.
ATV Tour
When: Most days in September
An ATV tour with Gecko’s Island Adventures is one of the best ways to enjoy St. Croix in September. Take a guided tour to explore the rainforest and historical sites. Guided adventures include a two-hour ride through rugged trails, the Xpedition STX tour with panoramic views and cultural stops, or a sunset tour that ends at the beach with a glass of champagne.
Buck Island Trip
When: Daily
Buck Island Reef National Monument protects a small, uninhabited island about a mile and a half north of St. Croix, and it's only accessible by boat. You can join Big Beard's Adventure Tours for a half-day or full-day trip to enjoy incredible scenery and go snorkeling and swimming. Big Beard's also offers sunset cruises for an evening experience.
Hiking Adventures
When: Daily
September’s heat means early hikes are best, but the scenery is well worth it.
Our favorite trails include:
Annaly Tide Pools: A 4-mile round-trip to natural pools perfect for cooling off
Jack and Isaac Bay Preserve: A 3.6-mile trail to a quiet beach, ideal for snorkeling or relaxing
Goat Hill: A moderately challenging 3.5-mile hike to incredible scenery of the island
Hams Bluff Lighthouse: A short but steep 0.8-mile hike to a historic lighthouse with stunning views
Cultural Experiences
When: Daily
St. Croix offers rich cultural and historical experiences year-round, and they’re especially enjoyable during the quieter month of September.
Some of the best sites include:
Fort Christiansvaern: This well-preserved 18th-century Danish fort covers over seven acres in Christiansted. It has unique colonial architecture, a small museum, and scenic waterfront views.
Virgin Island Food Tours: Taste traditional dishes and learn about St. Croix’s history and culture on a guided walking food tour.
Columbus Landing: This beach at Salt River Bay is where Columbus landed in 1493. It was originally inhabited by Indigenous peoples and is the site of the first recorded conflict between Europeans and Native Americans.
Caribbean Museum Center for The Arts: Located in Frederiksted, this is the island’s only art museum and features local Caribbean artists, rotating exhibits, and events.
Nightlife
When: Daily
While St. Croix’s nightlife is low-key, there are still fun things to do after dark. If you want to be outdoors, you can enjoy a west-end sunset or a cruise with Lyric Sails or take an evening kayaking tour. You can also head to Divi Carina Bay Casino or get late-night drinks at Common Cents Pub and Shupe’s on the Boardwalk.
St. Croix in September: Conclusion
A September vacation to St. Croix is perfect if you're looking for a slower pace, fewer crowds, and warm weather. While it's hurricane season, most days are sunny, and you can have an amazing trip with the right planning. From kayaking and snorkeling to local events and cultural spots, there's plenty to do in September.
If you're ready to start planning fun experiences, book a kayak tour with Virgin Kayak Tours.