Mutton Snapper Spawn Firing in the Keys as May Offshore Season Peaks

What's Biting

What's Next

The next 2–3 days look favorable for offshore bottom work. Winds at Sombrero Key and Sand Key are holding near 11–12 knots this morning — workable for most reef and wreck runs, though always confirm against the local NOAA marine forecast before making an extended offshore push.

Today marks the new moon, which brings spring tides and the strongest tidal exchanges of the month. Those ripping currents are a double-edged sword: on the reef they push bait and concentrate snapper on the upcurrent edge of structure; on the flats they fire up tarpon and permit. Plan your drifts and poling angles around the tide peak — not just daylight — as your primary scheduling anchor.

**Offshore bottom fishing** should remain elevated through late May and into June. The mutton snapper spawn cycle peaks around the full moon but sustains good fishing on structure for weeks on either side; the next full moon falls around June 1, and ALL IN Key West is already calling the May–July window "lights out" for snappers, groupers, sharks, and mahi. Live bait — pilchards, pinfish, and live shrimp — has been the winning presentation on Gulf-side wrecks. ALL IN Key West noted excellent mixed action that included cobia, kingfish, and barracuda on the same drifts, so rig for variety: bring multiple setups and be ready to slide up or down in the water column when the mixed bag shows.

**Offshore pelagics:** Mahi-mahi season is in full stride. ALL IN Key West reported the Gulfstream running close to the Keys as early as March, and that proximity concentrates mahi on color lines, rip edges, and floating weed. Pitch a live bait or dead ballyhoo into any floating debris you cross — the classic approach remains the most effective.

**On the flats:** No captain reports this week specifically address the tarpon bite, but May is historically the peak of the migratory tarpon run through the Keys. Large schools roll through channels and cross the oceanside flats through Memorial Day and beyond. Live crabs or large streamer flies at channel edges on a moving tide are the standard approach. With spring-tide current now at its monthly maximum, timing around the incoming or outgoing flow matters more than the hour of sunrise.

**Weekend window:** Book early-morning departures to get ahead of the afternoon sea breeze that builds as air temperatures climb. The calm pre-wind hours offer the best conditions for both offshore reef runs and flats approaches — and the best light for spotting rolling tarpon.

Context

For the Florida Keys in mid-May, this is textbook peak season — arguably the single best month of the year across both the flats and offshore fisheries. The mutton snapper spawn, timed to the May and June full moons, is one of the most predictable and productive seasonal events in South Florida. Aggregations form on reef structure and deep wrecks and can hold for weeks, and the bite ALL IN Key West describes — muttons "chewing like crazy" alongside yellowtails — is entirely on script for this point in the calendar.

Sailfish, which ALL IN Key West noted as showing strong numbers early in the 2026 season as of March 1, typically taper from headline catch to opportunistic encounter by mid-May as the main migration pulse moves north. Mahi-mahi fill that pelagic slot through the summer and generally build through June and July.

On the regulatory front, CCA Florida, Saltwater Sportsman, and Sport Fishing Mag all report that South Atlantic states — including Florida — received federally approved exempted fishing permits (EFPs) for red snapper in 2026, opening an extended recreational season this summer. These EFPs apply to Atlantic reef structure north of the Keys rather than the reef tract immediately offshore of Key West, but the broader policy direction signals improving access to snapper fisheries across Florida; check updated FWC guidance before targeting red snapper specifically.

The most recent water-temperature reading on hand — 78°F at buoy 41114 in late April — is consistent with early-spring offshore conditions. By mid-May the Keys flats and nearshore reef water typically climbs into the low-to-mid 80s, which accelerates bait movement and keeps permit, bonefish, and tarpon active on the flats. All of this places current conditions squarely within what local guides routinely describe as the two-month sweet spot of the Keys fishing year.