Stripers Shifting Patterns as Merrimack Run Winds Down on NH's Coast

What's biting

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The full moon falls today (June 30), and its tidal influence should be front of mind for NH coast anglers over the next 48-72 hours. Per Saltwater Edge Blog's June Full Moon forecast, this phase typically pushes stripers toward deeper, cooler oceanfront structure rather than the warming estuaries they favored earlier in June. That tracks with what The Fisherman — South Shore MA to ME is reporting: the Merrimack River run is winding down and fish are dispersing to open-water edges and offshore structure.

Buoy 44007 is logging 1.6-foot wave heights and light winds of around 3 m/s — small-boat-friendly conditions that should remain workable into the weekend. With seas this calm, anglers can reach ledge and rip structure that typically gets blown off in a chop, making this a good window to push into deeper water and work the edges.

Full moon tidal exchanges run at their strongest right now. Plan the best striper windows around the two hours on either side of each tide transition, working current edges, drop-offs, and any structured bottom. Low-light periods matter even more as June closes out: reports from The Fisherman's Connecticut correspondents describe stripers getting increasingly selective during daylight — responding best to topwater plugs and soft plastics at dawn and dusk — a pattern that almost certainly applies to the NH coast as well. When fish get picky during the day, live or rigged bait is the better play.

Dave Anderson's report in The Fisherman — South Shore MA to ME flags a current soft spot in bass fishing from Rockport north through the Merrimack, but notes that Maine anglers are already seeing a strong push of larger fish this week. When larger stripers stack to the north, the NH coast corridor typically sees that same class moving through in the days that follow — it's worth staying alert and on the water.

For bait presentation, On The Water's June 26 Striper Migration Map notes that bigger bass are concentrating on sand eels, squid, bunker, and herring as the spring run transitions into summer patterns. With mackerel dominating as local forage — Beauport Fishing Adventures reported 'tons of mackerel' on virtually every trip — presentations mimicking a 6-8 inch baitfish should be productive. OTW Surfcasting has highlighted rigged Slug-Gos and glide baits as standout artificials from New York to Maine in 2026; both profiles are worth working along NH beaches and rocky points during the low-light windows.

Offshore, haddock out of Tilly's Basin remains on-again, off-again per Beauport Fishing Adventures. If already making an offshore run for bass and mackerel, a drift over productive bottom is worth attempting — but don't make it the primary mission until the bite steadies.

Context

61°F water at buoy 44007 in the final days of June is on the cooler side for the Gulf of Maine but not out of character. Saltwater Edge Blog's June forecasts noted that 'water temperatures have been staying cool' across the broader New England region this year, a pattern that has extended what is typically a compressed late-spring bite. A sustained 61°F surface temperature this late in June suggests the Gulf of Maine is running behind its warmest years — a condition that historically benefits striper fishing by keeping fish in the system longer before they retreat to deep offshore structure.

The Merrimack River run winding down in late June aligns with the typical seasonal progression for this stretch of coast. The river-mouth bite historically peaks in late May through the second week of June, then tapers as water warms and fish scatter to open-coast and offshore edges. Surfland Bait & Tackle's 'just about done' read on the Merrimack — with Joppa Flats picking up the slack for tube-and-worm trollers — is the classic late-June transition signature. It's a sign the season is on schedule, not lagging.

The Fisherman's June 25 New England forecast confirmed stripers remain 'at the top of the list for most New England anglers,' with pockets of big fish reported across the region. Dave Anderson's note (The Fisherman — South Shore MA to ME) that Maine is already receiving a strong push of larger migratory fish is exactly what you'd expect in the final days of June. The NH coast sits in the migration corridor between the Massachusetts concentrations and the Maine push, and this northward progression is consistent with how the season typically unfolds at this point in the calendar.

Mackerel abundance alongside striped bass is a familiar midsummer pattern in the Gulf of Maine. Beauport Fishing Adventures' observation of 'tons of mackerel' accompanying stripers on virtually every trip is consistent with the species' typical late-June presence in the region. No specific comparative data in the current reports addresses whether this year's mackerel arrival is running ahead of or behind prior years, but their presence at this point in the season is normal and welcome — and historically one of the best conditions for quality striper fishing on the NH coast.