Plum Island / Merrimack River mouth is a classic shore striper spot in late spring š£ The combination of moving water, bait flushing out of the river, and current seams can stack bass tight to the edges of the channel, bar tips, and rip lines.
With your conditions, Iād prioritize the first few hours of daylight and the last light window before sunset. Youāve got a falling pressure trend right now, which often helps kick off a feeding window, and the mainly clear sky means fish may lean a bit deeper or tighter to structure during the bright part of the day. The ESE wind at about 11 mph should put some chop on the water and can push bait toward the more productive downwind side of the beach/river mouth. š
Best shore approach
- Fish current seams, troughs, and the outside edges of the mouth where bait gets pinned.
- Cast up-current or quartering into the flow, then let your lure swing naturally through the seam.
- If the river is ripping, position yourself where you can control the drift rather than forcing a straight retrieve.
- On the beach side, work the sweeper channels, sandbars, and any deeper cuts where fish can ambush bait.
Lures to start with
Late spring stripers at an inlet or river mouth usually want baitfish imitations:
- Paddle-tail swimbait on a jighead for a steady, natural swim
- Bucktail when current is strong and you need feel + control
- Topwater pencil or spook at sunrise/sunset if bait is dimpling or birds are working
- Metal lip / minnow plug if you need longer casts from shore
If you want a simple confidence bait, a 3.5ā to 5ā paddle tail in shad, grey ghost, or white is a great starting point. A lure like the 3.5ā Swimming Minnow, Real Shad or 5ā Shad Swimbait Paddle Tail matches the local bait profile well.
Gear and presentation
- Use a medium-heavy surf rod with enough backbone to punch casts and move fish from the sweep.
- 20ā30 lb braid with a 30ā40 lb fluorocarbon leader is a solid starting point.
- For plugs and swimbaits, a snap can speed lure changes; for bucktails, tie direct for better action.
- If the water is not too rough, keep retrieves slow and deliberateāstripers often eat on the pause, not the speed.
Tactics that matter most here
- Watch for bait spraying, birds diving, or nervous water before you start blind-casting.
- If one side of the mouth is cleaner or has a better current edge, fish that side first.
- Revisit the spot around sunrise and sunsetāthatās when the mouth often comes alive.
If you want, I can also give you a specific lure rotation, tide-based plan, and casting angles for the Merrimack River mouth so you can fish it like youāve got a local in your pocket. Tight lines!
