Key West sits at the southern tip of Florida, closer to Havana than to Miami, and the offshore grounds start just minutes from the harbor. The Gulf Stream pushes warm, clear, cobalt-blue water within 5 miles of shore, and the reef system creates structure that holds bait and big-game species year-round. There isn’t a single offshore destination in the continental US with more species variety in easier-to-reach water.
What you can catch
Key West offshore charters target a rotating cast of pelagics and bottom fish:
- Mahi-mahi (dolphin): The most consistent offshore target. Schoolies (5–15 lb) run in packs around weed lines; bulls (25–50 lb) ride with them. April through September is peak.
- Sailfish: A Key West specialty. Winter sailfish fishing (December–March) is world-class, with double-digit release days possible.
- Wahoo: Speedsters to 80+ lb. Caught trolling the reef edge in fall and winter; high-speed trolling in summer.
- Yellowfin and blackfin tuna: Yellowfin show up on the Gulf Stream breaks in spring and summer. Blackfin are year-round at the Marquesas and over the reef.
- Blue and white marlin: Present in summer. Not the numbers game it is in North Carolina, but a real shot on a full-day trip.
- Other: Grouper, snapper, kingfish, barracuda, and African pompano round out a typical multi-species day.
Key West fishing calendar
- December–March: Sailfish peak. Cold fronts push bait south and sails follow. Also prime wahoo and kingfish.
- April–June: Mahi-mahi show up in force. Tuna, sails, and reef fishing all productive.
- July–September: Mahi and marlin peak. Hot weather, occasional tropical systems. Tarpon fishing goes nuts inshore in the backcountry.
- October–November: Wahoo, mahi, sailfish, and kingfish all overlap. Cooler nights, smaller crowds. Arguably the best overall offshore month.
Types of trips
- Half-day (4 hours): Usually reef fishing for snapper, grouper, and kingfish. Good for families or first-timers.
- Full day (8 hours): Runs to the Gulf Stream for mahi, sails, tuna, and wahoo. The standard offshore Key West experience.
- Overnight / 24-hour trips: Multi-day runs to the Dry Tortugas or Marquesas, fishing for marlin, tuna, and big groupers.
Charter pricing
Key West is premium offshore water and pricing reflects it:
- $500–$800: Half-day reef and wreck fishing, 25–32 ft center console.
- $800–$1,200: Three-quarter day combo trips, some offshore, some reef.
- $1,200–$1,800: Full-day pure offshore trips on 35–45 ft sportfishers. Standard Key West big-game day.
- $1,800–$3,000+: Premium sportfisher boats, multi-day Dry Tortugas trips, private charter boats 50+ ft.
Prices are flat-boat rate for up to 4 anglers on most sportfishers. Larger groups pay more or split into two boats. Tip the mate 15–20%.
Choosing your charter
Key West has more charter captains than any other Florida port, and quality varies. A few things to look for:
- Specialization. Ask what the captain fishes for most. If you want sailfish in January, book someone who fishes live bait for sails — not a generalist.
- Boat size vs. water. Sub-35 ft boats are fine for reef and within 15 miles offshore. For Gulf Stream trips and Dry Tortugas runs, book 40+ ft with an enclosed cabin and fast cruise speed.
- Mate quality. On Key West boats the mate rigs all bait, gaffs fish, and runs the cockpit. A good mate is the difference between a 6-fish day and a 20-fish day. Ask about the crew when you book.
- Licensing and insurance. US Coast Guard licensed captain (6-pack or larger) and current insurance are non-negotiable. Any captain who hesitates when you ask is not the right one.
What to bring
- Polarized sunglasses (essential — you’ll see fish you would’ve missed otherwise).
- Hat with a brim and chin strap.
- SPF 50 sunscreen, reef-safe. Reapply every 2 hours.
- Closed-toe, non-marking shoes.
- Seasickness medication if you’re at all susceptible. The Gulf Stream can be rough.
- A soft cooler with water, sports drinks, and sandwiches. Most Key West boats do not provide food.
- A camera — you’ll want it.
- Cash for the tip.