Best Places to Visit in the Florida Keys in March
Written by Our Hidden Earth Editorial Team
Last updated 23 October 2026
Summary: March in the Florida Keys provides a transition period where comfortable temperatures support outdoor exploration across the island chain, from Key Largo to Key West. This period allows visitors to balance active water sports with relaxed evenings, provided they account for the region's varying levels of accessibility and activity.
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Florida Keys in March: at a glance
Key West offers the most concentrated urban amenities and cultural history for those preferring a car-free walking experience.
The Upper Keys excel in accessibility to marine sanctuaries, making them the primary choice for snorkelling and diving enthusiasts.
March offers generally mild conditions, though visitors should remain flexible as wind patterns can affect water clarity and boating excursions.
Renting a vehicle remains the most efficient way to traverse the Overseas Highway and reach the more secluded middle islands.
Is March a good time to visit the Florida Keys?
March is a popular time for the Florida Keys, as the weather settles into a predictable pattern of mild days and cool evenings. This makes it a suitable time for travellers who want to avoid the intense humidity and heat of the summer months.
Because the islands are a linear chain connected by a single highway, the region experiences a consistent flow of visitors throughout the month. Those seeking a quieter atmosphere often find more solitude by staying in the Middle Keys, while visitors looking for social energy and historic sites tend to gravitate toward Key West.
As this is a popular window for travel, planning accommodation in advance is generally expected to ensure a smooth arrival.
Weather in the Florida Keys in March
Climate in the Florida Keys during March is characterized by a lack of extreme heat, with coastal breezes typically keeping the air feeling fresh. While the islands are relatively flat, there are subtle differences in how the weather manifests along the chain.
The Upper Keys, closer to the Florida mainland, can sometimes feel the effects of northern weather patterns more directly, while Key West, surrounded by deeper water, often enjoys slightly more tempered conditions. Visitors should note that while the air is pleasant, water temperatures are still transitioning from their winter lows; those planning extended periods in the water may find a light wetsuit useful for comfort.
Rainfall is generally lower during this time than in the summer, though short, passing showers remain a standard feature of the subtropical environment.
Best places to visit in the Florida Keys in March
1. Key Largo
As the gateway to the Florida Keys, Key Largo is defined by its proximity to expansive marine habitats. It serves as a primary destination for those interested in exploring the underwater environments of John Pennekamp Coral Reef State Park.
In March, the water visibility is often favourable for glass-bottom boat tours and snorkelling, allowing visitors to view coral formations and diverse fish populations. Because Key Largo is the largest island in the chain, it offers a variety of accommodation styles, from waterfront resorts to smaller, family-oriented lodges.
Its location makes it an ideal first stop for those driving down from the mainland who want to settle into the island pace immediately.
2. Islamorada
Often referred to as the sport fishing capital of the world, Islamorada is a collection of six distinct islands that prioritize a relaxed, maritime lifestyle. March is a productive time for those looking to engage in backcountry or offshore fishing, as the waters remain active.
Beyond fishing, the area is known for its history of small-scale boat building and local art galleries. Visitors can explore the shoreline at Founders Park or visit historical landmarks that highlight the region's maritime heritage.
The village atmosphere here is more spread out than in the lower islands, giving visitors space to wander without the density found in busier tourist hubs.
3. Marathon
Located in the heart of the Florida Keys, Marathon is an excellent base for families and those who prefer a central location that provides easy access to both the northern and southern reaches of the chain. The town is famous for the Seven Mile Bridge, which provides a long, scenic connection to the Lower Keys.
Visitors often spend time at the local turtle hospital, which is a significant research and rehabilitation facility. Marathon also offers numerous small beaches and parks that are less crowded than those in Key West, providing a quieter space to enjoy the coastal environment during the active March season.
4. Bahia Honda State Park
Situated between Marathon and Big Pine Key, this park is widely regarded as home to some of the most scenic beaches in the region. The remnants of the historic railroad bridge that once spanned the islands provide a striking backdrop for photography and walking.
In March, the clear, shallow water is ideal for swimming and paddling, though it is important to check the local conditions as coastal currents can vary. The park also contains nature trails that wind through native vegetation, offering a glimpse into the natural ecology of the keys away from the main road.
It is a day-use destination for many, though it remains a highlight for those exploring the middle region.
5. Big Pine Key
Big Pine Key offers a distinct departure from the more commercialized areas of the keys, serving as a sanctuary for the endangered Key deer. The environment here is quieter, with a focus on birdwatching, kayaking through mangrove forests, and exploring the National Key Deer Refuge.
March is a calm time to walk the local trails, where the vegetation is often lush. Visitors should be aware that the island adheres to strict speed limits to protect the local wildlife, which naturally slows the pace of travel.
This is a destination for those who prioritize a slow, nature-focused trip over evening entertainment or busy shopping districts.
6. Key West
Key West is the southernmost point of the chain and serves as the primary urban center for the Florida Keys. Its historical architecture, including the preserved homes of notable writers and figures, draws visitors interested in culture and literature.
Walking through the narrow streets of the Old Town provides a different experience from the rest of the islands. In March, the town is active, with local festivals and street performances contributing to a lively atmosphere.
Visitors can access a variety of museums, historic sites, and nightly gatherings at sunset that celebrate the island's unique position at the edge of the Gulf of Mexico and the Atlantic Ocean.
7. Dry Tortugas National Park
Accessible only by seaplane or ferry from Key West, this remote park is a significant destination for history enthusiasts and snorkelers alike. The central feature, Fort Jefferson, is a massive 19th-century coastal fortress surrounded by clear, shallow waters.
March allows for pleasant boat trips to the park, where visitors can spend the day exploring the fort and the surrounding reefs. It is essential to book transportation well in advance, as the park limits the number of daily visitors.
This trip requires a full-day commitment and should be scheduled when the seas are calm, as weather shifts can influence travel feasibility.
8. Stock Island
Immediately adjacent to Key West, Stock Island offers a different perspective on the region's working maritime industry. It is a hub for commercial fishing and shrimping, providing a more authentic, behind-the-scenes view of life in the keys.
In recent years, it has developed into a destination for those who want to be near the amenities of Key West while staying in a quieter, less congested environment. Visitors often enjoy the fresh local seafood available at the docks and the more informal atmosphere of the local watering holes.
It is an ideal base for those who plan to cycle into Key West during the day but want to return to a calmer setting at night.
9. Long Key State Park
This area provides a peaceful stretch of coastline perfect for those who want to disconnect. Long Key was once a destination for luxury travellers in the early 20th century, but today it is a quiet park known for its hiking trails and paddleboarding opportunities.
In March, the shallow flats are filled with marine life, making it a favourite spot for birders and photographers. The park offers an accessible look at the salt marsh and mangrove ecosystems that define the geography of the keys.
It is best suited for visitors looking to spend a quiet morning or afternoon in a preserved natural setting.
10. Grassy Key
Located near Marathon, Grassy Key is a narrow island known for its quiet residential feel and research centres dedicated to marine life. It is home to facilities that study dolphins, offering an opportunity for education rather than just observation.
The island is primarily composed of small lodges and private homes, making it a good choice for visitors seeking a low-key base. The coastline here is tranquil, and the waters are generally calm, which makes for excellent kayak excursions through the nearby mangrove tunnels that dot the Florida Bay side of the island.
How to plan your Florida Keys trip
The most effective way to visit the Florida Keys is to consider the Overseas Highway as the backbone of your journey. Renting a car at one of the mainland airports allows you the flexibility to stop at state parks, view marine centres, and explore different island communities at your own pace.
If you prefer to stay in one place, Key West is the only town where a car is largely unnecessary, as the density of shops, restaurants, and historical sites is high. Packing should prioritize sun protection, including hats and lightweight clothing, as well as a medium-weight layer for breezy evenings.
If your goal is to experience the water, bring gear you are comfortable with, but know that rentals are widely available across the keys, particularly in the Upper and Middle sections.
Frequently asked questions
Is it easy to travel between the islands without a car?
Public transport between islands is very limited, making a rental car the standard choice for most travellers. While some shuttle services exist, they do not offer the frequency or convenience needed to explore multiple islands independently. If you choose to forgo a car, plan to stay in one base, like Key West.
Can I swim in the ocean during March?
Yes, swimming is a primary activity in the Florida Keys in March. While the water is not as warm as it is in the summer, it is generally comfortable for most people. Some visitors may prefer a thin wetsuit for extended periods of snorkelling or diving, especially on windier days.
Are the islands crowded in March?
March is a busy period in the Florida Keys, particularly around the school break windows. While the islands generally feel relaxed due to their layout, popular spots like state parks and Key West attractions will have more visitors. Booking your stay and any guided boat tours well in advance is advised.
What is the difference between the Upper and Lower Keys?
The Upper Keys, such as Key Largo and Islamorada, are closer to the mainland and focus heavily on diving, fishing, and water-based activities. The Lower Keys, culminating in Key West, have a distinct historical and cultural identity, featuring more museums, nightlife, and urban architecture. The geography changes as you travel further south.
Is the Dry Tortugas ferry reliable in March?
The ferry to the Dry Tortugas is a popular excursion that depends on sea conditions. While March is generally a suitable time for the trip, weather in the Gulf of Mexico can change quickly. Always have a flexible plan and confirm your reservation with the operator as the date of your departure approaches.
Do I need a permit to fish in the Florida Keys?
If you are fishing on your own, you will need a Florida saltwater fishing license, which is easily obtainable online or at local tackle shops. If you are hiring a professional charter captain, the captain's license usually covers the passengers on the boat. Always confirm this with your specific guide beforehand.
Are the beaches in the Florida Keys sandy?
The Florida Keys are known more for their coral reefs and mangroves than for wide, sandy beaches. While there are lovely areas like those found at Bahia Honda State Park or in Key West, many parts of the islands have rocky shorelines or shallow flats. Manage expectations accordingly if you are seeking traditional sand dunes.
What should I pack for a March trip?
Pack for warm, sunny days and potentially cool, breezy nights. Lightweight, breathable clothing is essential, alongside a light sweater or jacket for the evenings.
Don't forget high-quality sunscreen, polarised sunglasses for water activities, and comfortable walking shoes for exploring the historic streets of Key West or the local nature trails.
Final thoughts
For a balanced Florida Keys trip in March, focus on Key Largo or Islamorada if your priority is water-based recreation and marine life, or choose Key West if you prefer a walkable base rich in history and social options. Those seeking a quieter, nature-oriented experience should look toward the middle islands like Marathon or Big Pine Key.
Weather, opening times and transport details in this guide were correct as far as we could check. Always confirm directly before you travel.
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