False albacore invade the Sound as Long Island's fall run ramps up
False albacore have taken over as the headline story on Long Island this week. On The Water's September 17 Long Island and NYC report has albies pushing west through Long Island Sound, following a September 10 report that had them just beginning to fill in off Montauk, a sign the run is building rather than peaking. Big fluke are moving with them, working out of South Shore inlets and the western Sound's backwaters as the summer fluke season winds toward its close, per the same reports. Saltwater Edge's Rhode Island forecast describes albies and bonito having "taken over the oceanfront" there too, consistent with the same fall push moving through the region. Our instrument readings back up the late-summer-to-fall transition: water temps run from 69.8°F at Montauk up to 72.9°F in New York Harbor, still warm enough to hold albies and fluke close to shore before the real cooldown arrives. Striped bass activity is building too, with Anglers Journal's account of the fall blitz season and NY DEC's ongoing Fish Smart striped bass guidance both pointing to the weeks around the equinox as when the Northeast's marquee migration gets underway.
New to these readings? What water temp, tide, and moon phase mean for fishing →
What's biting
What's next
Expect the albie bite to keep building through the week as more fish funnel west through the Sound and around Montauk, tracking the pattern both On The Water reports describe. Fluke fishing should keep tapering as the remaining fish clear the inlets and backwaters, so working the tail end of that South Shore exodus is a better bet than waiting on the depths to load back up.
Watch the tide around Montauk, with the next high there near 6:21 PM local, against the Sound's low near 2:48 PM at Kings Point. That setup lines up a strong outgoing push through the afternoon and a building incoming tide into the evening, worth planning a session around either turn.
With the Waxing Gibbous moon headed toward full, expect stronger nighttime tidal movement over the next several days, which tends to concentrate bait and predators around structure and rips. If the cooler nights Saltwater Edge describes up in Rhode Island reach Long Island Sound on a similar timeline, the striped bass bite that's been building in the background should sharpen into something more consistent heading into the weekend.
Context
This is squarely peak fall-run season for Long Island and Montauk. False albacore and fluke trading places right around the equinox is a typical late-September pattern here, not an early or late signal.
Striped bass migration through the region historically intensifies through October as baitfish push out of the back bays and estuaries, matching what Anglers Journal describes as the Northeast fishery's strongest stretch. Water temperatures in the low-to-mid 70s are normal for this point in the calendar, still warm enough to hold summer species like fluke and albies close while the fall migrants arrive behind them. The next few weeks typically bring the widest species mix of the year to these waters.
Synthesized from real-time NOAA buoy data, USGS stream gauges, and current reports across regional fishing blogs, captain updates, and angler forums. Check local regulations before keeping fish. Never trust a single source for a trip decision.
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