Raritan Bay fluke and jumbo sea bass carry the bite toward fall

What's biting

What's next

Over the next two to three days, expect the pattern that's held through late August to persist: fluke and sea bass on structure inside Raritan Bay, with bonus bluefish, bonito and Spanish mackerel mixing in around the Hook and the ocean-facing beaches. Capt Ron's crew has emphasized that drift speed is the swing factor right now — days with a clean, steady drift have produced top-ten catches, while slack or awkward drift angles let sea bass beat the fluke to the bait and led to more shorts than keepers. Anglers planning a trip this week should prioritize stages of the tide that produce a workable drift over structure rather than fishing the clock.

On The Water's Northern New Jersey report flags the midshore tuna bite as inconsistent but says mahi remain abundant around the pots and temperature breaks, so boats able to run out past the bay have a reasonable shot at filling a mixed bag while inshore rods stay on fluke and sea bass. Grumpys Tackle's read on warming water pushing Spanish mackerel and bonito into the area suggests that surf and inlet anglers working small metal jigs and epoxy jigs should keep seeing that bite build rather than fade over the next few days.

The bigger question for the week ahead is timing on striped bass. Belmar-area captains quoted by The Fisherman — Northern NJ are already talking about switching over to stripers once fluke season winds down, contingent on the fish showing up the way they did last season — which signals that the fall striper push has not arrived in force yet but is squarely on captains' minds. Anglers wanting to be first on bay stripers should watch bait signs (peanut bunker, mullet, and sand eels moving into inlets and back bays) as the leading indicator, since bait staging typically precedes the first meaningful striper showing by days to a couple weeks.

With Labor Day weekend approaching, expect boat traffic and fishing pressure on the reliable fluke/sea bass grounds to pick up; anglers who can fish a weekday will likely find calmer water and less competition for the same bite reported this week.

Context

For Raritan Bay and Sandy Hook, a late-August pattern dominated by fluke and sea bass with bonus bluefish, bonito and Spanish mackerel is a fairly typical late-summer mix rather than anything unusual — the transition toward these warm-water visitor species (bonito, Spanish mackerel) alongside the resident bottom bite is a normal seasonal progression as water temperatures peak. NJ Fish & Wildlife News' profile of the nearby Shark River Access WMA underscores that the broader Monmouth County shoreline corridor — including winter flounder, blowfish, tautog, bluefish, summer flounder and striped bass — has long supported this same mixed-species pattern along inlet and jetty structure, consistent with what's being reported in the bay now.

The fluke season itself sounds like it ran a bit behind typical form this year: Belmar-area captains quoted by The Fisherman — Northern NJ described the 2026 season as slow to find a groove, with things not clicking into a good rhythm until August rather than earlier in the summer. That's a useful data point for anglers benchmarking this year against prior seasons — the current hot stretch of fluke and sea bass fishing may represent a compressed, later-than-usual peak rather than a sustained summer-long bite.

On striped bass specifically, there isn't yet a direct signal in this week's intel confirming a fall push has started in Raritan Bay — captains are referencing last season's pattern as their benchmark for what they're hoping repeats, which is honest uncertainty rather than a confirmed trend. No buoy or gauge readings were available for this report, so water temperature and tide-height context can't be compared numerically to seasonal norms this cycle.