Keys Mutton Spawn Peaks, Blackfin Tuna and Grouper in Full Swing

What's Biting

What's Next

The next full moon arrives around June 1-2, roughly one week out from today's First Quarter. ALL IN Key West's recent mutton spawn report makes the lunar timing hard to ignore: the bite is "at an all-time high" around the full moon, and the snapper action should intensify through the final days of May. Anglers who can time a trip for the days immediately bracketing the June full moon should find mutton and yellowtail snappers at peak activity on deep wrecks and reef edges. This one-week build is the prime window of the early summer.

NOAA buoys SMKF1 (Sombrero Key) and SANF1 (Sand Key) are recording winds of 19-22 mph on May 25, which may push some traffic toward the Gulf side for calmer conditions. ALL IN Key West noted a recent Gulf of America run that was "full of life," with groupers, snappers, cobia, barracudas, and kingfish all cooperating. If winds ease by mid-week, offshore Atlantic runs to the 100-220-foot depth range should be highly productive for muttons and grouper. ALL IN Key West reported five quality mutton snappers and a rare Caribbean snapper on a 220-foot deep wreck during a recent trip, using heavy bottom rigs to hold in the current.

Blackfin tuna are worth a dedicated strategy over the next two to three weeks. Sport Fishing Mag identifies May through July as the core window when blackfins flood South Florida offshore waters from the Keys northward. They respond to live bait, dead bait, lures, trolling, drifting, or kite fishing over wrecks and reef edges. Live bait has been the standout approach; ALL IN Key West called it "red hot" for kings, tuna, and sailfish on recent offshore trips. Watch for nervous baitfish on current edges as a reliable pointer to where tuna are holding.

Grouper season reopened May 1 per Coastal Angler Magazine, putting black, red, and gag grouper back in play on reefs and wrecks. The early season typically rewards anglers willing to probe new structure, and charter captains who have been running the grounds since reopening have an edge right now. Heavy tackle and fast hands are non-negotiable; grouper dive straight for structure at the bite. Plan early morning departures to beat building afternoon winds and maximize time on productive wrecks before conditions deteriorate.

For flats anglers, no direct intel on permit, tarpon, or bonefish is available from current feeds. May is traditionally a strong month for tarpon migration through the Keys backcountry and bridges, but treat that as general seasonal context rather than a confirmed report for this week.

Context

Late May is among the most productive offshore windows the Florida Keys delivers each year. The mutton snapper spawn, triggered by full-moon cycles running May through August, is one of the most reliable recurring events in Keys fishing. ALL IN Key West describes May, June, and July as "absolutely lights out" for the full offshore menu of snappers, groupers, mahi-mahi, and more. This year's activity appears squarely on schedule with no indication of an early or late season.

Grouper season reopening on May 1 is the traditional annual reset, per Coastal Angler Magazine. Historically, the first weeks of the reopened season see concentrated pressure on known wrecks as anglers restock coolers after the winter closed period. Conditions permitting, early June typically settles into more consistent catch rates as pressure normalizes across a wider range of structure.

The blackfin tuna May arrival is exactly on script. Sport Fishing Mag describes their annual appearance off the Keys and South Florida coast as a "flood" from May through July, making this one of the most predictable seasonal events in the region. The combination of spawning snappers, reopened grouper, and incoming tuna in a single late-May window is a well-established Keys pattern that serious offshore anglers plan trips around months in advance.

On the regulatory side, CCA Florida and Coastal Angler Magazine both reported a federal court injunction that blocked a newly expanded 39-day Atlantic red snapper season under the South Atlantic EFP program just before its Memorial Day launch. This development affects Atlantic-side fishing from Florida through North Carolina. The primary Keys offshore reef fishery targeting Gulf-side wrecks and deep reef structure operates under a separate Gulf of Mexico regulatory framework and is not directly disrupted by that ruling, though anglers should verify current state and federal regs before harvesting any snapper species.

No direct year-over-year comparison data is available from local shops or state agencies for this specific week. The intel from ALL IN Key West and Sport Fishing Mag reflects current-season conditions and is consistent with what a normal late-May Keys offshore window typically produces.