Delaware Bay summer bite on: fluke, blues, and drum in the mix

What's biting

What's next

With water temps at 70°F in Delaware Bay — warmer than the ocean-facing beaches, where Fishermans HQ LBI noted temperatures "in the low-to-mid 60s" for the LBI oceanfront as of June 14 — the bay's summer mode is running ahead of the coastal pattern. That temperature gap creates distinct opportunities on the NJ side of the bay this week.

Summer flounder are the species most likely to reward time on the water. OTW Northern New Jersey's June 18 report confirmed fluke fishing is improving across the region's bays, and 70°F sits squarely in the range where summer flounder become more aggressive and less structure-bound. Work sandy channel edges and drop-offs with bucktails or Gulp-style baits tipped with strip baits, keeping your presentation just above the bottom on a slower drift. The first-quarter moon is building tidal push — stronger current windows mid-week and into the weekend will activate bay structure and concentrate the bait schools that flounder key on.

Bluefish should remain consistently active through the week. These warm-water feeders are confirmed hitting throughout the NJ coastal system per OTW Northern New Jersey, and channel rips and tributary creek mouths on moving tides are prime holding areas. Metal spoons, poppers, and wire-leader setups are reliable producers when fish are in a chasing mood.

Striped bass are transitioning. On The Water's June 19 striper migration map flags that bigger fish have dispersed from their spring concentration areas and are now chasing sand eels, squid, and bunker in a scattered summer pattern. At 70°F, the bay's main-stem temperatures are approaching the upper comfort range for quality striper fishing — dawn and dusk windows, and any cooler, deeper channel water you can locate, will extend productive time on the water.

Grumpys Tackle called out drum among the active species showing along the NJ coast, and Delaware Bay's bay-mouth shallows have historically been productive for drum in early summer. With warming water and crabs active, crab baits near bottom structure near the inlet area are worth a targeted effort through early July.

Plan outings around the first and last two hours of each tide stage this week. The first-quarter moon will build tidal range through the end of the week, tightening the current-dependent feeding windows that bluefish, flounder, and drum all exploit.

Context

A 70°F reading in Delaware Bay on June 23 is characteristic of the bay's rapid early-summer warm-up. Unlike the ocean-facing NJ beaches — which often run 5 to 10°F cooler well into July due to oceanic upwelling and the thermal mass of deeper Atlantic water — Delaware Bay's shallower, more enclosed basin heats quickly once air temperatures stabilize in the low-to-mid 70s, typically by mid-June. The current reading is on schedule for this point in the season, perhaps fractionally ahead of the long-term median but not dramatically early.

For the fishing calendar, late June in Delaware Bay historically marks the shift from the spring migratory striper push to a more diversified resident summer bite. The bay's once-legendary weakfish fishery — a signature Mid-Atlantic run that packed Delaware Bay from the 1970s through the early 1990s — has been severely diminished by stock collapse over the past two decades. No current NJ sources in this reporting cycle flag meaningful weakfish action this season; summer flounder, bluefish, and croaker now fill much of the recreational niche those fish once held, with drum near the bay mouth rounding out the summer mix.

Striped bass are tracking exactly where On The Water's June 19 migration map would predict: dispersing from concentrated spring holding areas and switching to scattered summer forage patterns keyed on sand eels, squid, and bunker. This mid-June to early July dispersal is the normal regional pattern and is not a sign of a poor season — it is simply the annual rhythm of the fishery.

The broader NJ picture, per OTW Northern New Jersey's June 18 report, describes a season running broadly on schedule: improving fluke action as bait assemblages build, bluefish consistently active, and sea bass holding steady on offshore structure. No sources this week flag conditions as unusually poor or unusually exceptional for Delaware Bay specifically — the picture is consistent with a typical late-June saltwater transition tracking toward summer.