Waterlands

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Winter flounderOff season

Bar · Massachusetts

Southwest Rock

41.60°N · 70.32°W · Bar · Nantucket Sound

LOADING MAP

Best score today · 1 AM · Winter flounder

69/100Great
Now
208 PM EDT
Best window
8-9 PMFlood tide
Tide now
Flooding3.1 ft ▲

Data from: NOAA CO-OPS + NDBC + ECMWF + Open-Meteo Marine · Waterlands engine

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24-hour conditions · rolling from now

Conditions · 8 PM · now

Time8PNOW
Score20Poor
Tide3.1 ft ▲Flooding
CurrentFlood0.4 kn · toward N
Wind21 kn NEgusts 30 · steady
Sea stateModerate2.9 ft · 5 s
Air temp60°Mild
WeatherOvercast100% cloud
Water68°FObserved

Current regulations

What you can keep here today

IN EFFECT NOW

No rule for Winter flounder is on file here yet, so its status is unknown, not closed. Confirm limits with MassDMF before you keep a fish.

Seasonality · 52-week view · this week ringed

When Winter flounder is best here

Out of season for Winter flounder · it leaves in 10 weeks

Winter flounder season by week of the year. Out of season for Winter flounder · it leaves in 10 weeks.
  • Peak
  • Shoulder
  • Off
  • Not here
  • This week

Winter flounder in Massachusetts

Spot profile

Southwest Rock

Depth
10-15 ftFlat bottom
Structure
Ledge · Inner · Semi-exposedLedge · flat bottom
Season
Off seasonWinter flounder

NOAA NCEI DEM, sampled Sep 13 on a 3.4 m grid. Depths are feet below NAVD 88, not chart datum (MLLW), so they can differ from a chart by a few feet. Not for navigation.

About this spot

Fishing Southwest Rock

Southwest Rock is a bar in Nantucket Sound, Massachusetts. Depth is 10-15 ft, with a flat bottom. Its profile reads ledge, inner water and semi-exposed.

Waterlands scores 10 species here; the best right now are black sea bass, Atlantic cod and bluefish. It is peak season now for black sea bass, Atlantic cod, bluefish and haddock, and shoulder season for summer flounder and tautog. Black sea bass peak from June through July and in September. Atlantic cod peak from May through June and from September through October. Bluefish peak from June through July and in September.

Tackle & technique

Winter flounder
Winter flounder spend late winter and spring on mud and sand bottom in harbors, coves and tidal channels, often in 5 to 30 feet. Anchor, chum with crushed clams or mussels, and fish small long-shank hooks with worm or clam on the bottom, tapping the rig to stir up mud. The bite is light, so use a sensitive rod.
Black sea bass
Black sea bass hold tight to wrecks, reefs, rock piles and jetties, from 15 feet inshore in late spring to well over 100 feet on offshore wrecks in late fall. Anchor or drift right over the structure and fish a two-hook high-low rig with squid or clam, or bounce a small jig on the bottom. The biggest males sit on the highest relief.
Atlantic cod
Cod hold near coarse, rocky bottom on ledges, banks and wrecks, commonly from 80 to 300 feet in the Gulf of Maine. Drift over the structure with a diamond or cod jig and a teaser fly above it, keeping the jig within a few feet of bottom, or fish clams on a high-low rig. Check the stock area and season before keeping one, because most of the year cod must be released.

Nearby spots

Other spots within an easy run

  • Hyannis Point

    Cape · 1.5 mi

    68
    Top: Striped bassPeak season
    • Striped bass 68
    • Little tunny 65
    • Bluefish 63

    11 kt NEH 9:52 PM · 3.5 ftL 3:42 AM · 0.7 ft

  • Gannet Ledge

    Bar · 1.1 mi

    58
    Top: Black sea bassPeak season
    • Black sea bass 58
    • Atlantic cod 57
    • Bluefish 55

    21 kt NEH 9:52 PM · 3.5 ftL 3:42 AM · 0.7 ft

  • Gannet Rocks

    Bar · 1.3 mi

    58
    Top: Black sea bassPeak season
    • Black sea bass 58
    • Atlantic cod 57
    • Bluefish 55

    21 kt NEH 9:52 PM · 3.5 ftL 3:42 AM · 0.7 ft

  • Southwest Ground

    Bar · 0.3 mi

    55
    Top: BluefishPeak season
    • Bluefish 55
    • Atlantic cod 53
    • Haddock 51

    21 kt NEH 9:52 PM · 3.5 ftL 3:42 AM · 0.7 ft

Scores and forecasts are for planning only and can be wrong. Conditions on the water change fast; check the marine forecast before you go. Regulations change during the season, so confirm limits and closures with MassDMF before you keep a fish.