How deep is Mattituck?

Mattituck ranges from 21.9 to 30.5 metres deep (72–100 feet) — a deep dive at its limit. It is a saltwater site rated as advanced difficulty. Depths vary across the site, so plan your profile to your training and verify conditions locally.

Is Mattituck a shore dive or a boat dive?

Mattituck is a boat dive — access is by boat rather than from shore. The entry area is recorded as moderately exposed to surge. No facilities are recorded at the site, and cell service is recorded as good. Entry details and parking notes, where known, are listed in the access section of this page.

Can beginners dive Mattituck?

Mattituck is rated as advanced difficulty, which may not suit new divers. Listed depths run from 21.9 to 30.5 metres (72–100 feet). Access is by boat. Consider your experience level, conditions, and local guidance before planning.

When is the best time to dive Mattituck?

Summer on slack tide; plan for depth and bottom time. Weather-limited in winter. Conditions vary, so check the latest reports and forecasts on the dive site page before your trip.

What will I see at Mattituck?

Divers at Mattituck in United States commonly report sightings of Tautog (blackfish), Cunner, Black sea bass, American lobster, and Scup (porgy). Tautog (blackfish), Cunner, Black sea bass, and Scup (porgy) are recorded as common sightings, while American lobster is reported only occasionally. Marine life varies by season and conditions—check the site page for recent diver observations and photos.

What hazards are recorded at Mattituck?

Depth (to ~100 ft) and Long Island Sound current; cold/dark at depth; limited visibility; boat traffic; fishing tackle. Hazards and conditions change, so verify current local information before diving.

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AdvancedBoat entry

Mattituck

New York, United States

AOW suggested22–31 m depthBoat entry3mm wetsuit typical

Boat dive — see Entry & access.

Mattituck at a glance

Mattituck is an advanced boat dive site in New York, United States with depths of 21.9–30.5 m (72–100 ft). Typically most favorable Jul · from 3 years of archive data. Divers commonly see Tautog (blackfish), Cunner, and Black sea bass. Recent reports put the water around 23°C (73°F). Check the latest conditions and entry details before you go.

Marine model · graded 2h ago

0.2 mwaves — under half a meter expected

Tap a factor for its source and model point · Forecast 23°C · seasonal avg 21°C

Site hazards: Depth (to ~100 ft) and Long Island Sound current; cold/dark at depth; limited visibility; boat traffic; fishing tackle.

Read the full hazards ↓

Dive windows this week

Best: Wed

Fri14:00–20:00

Sat7:00–20:00

Sun7:00–20:00

Mon7:00–20:00

Tue7:00–19:00

Wed7:00–19:00

Thu7:00–19:00

Favorable windowModerate window— no window

First light 5:59 · Sunrise 6:27 · Sunset 19:06

Source: Open-Meteo marine · model point 8.9 km from site · graded 2h ago

Forecast only — always assess conditions on site.

Forecast · NOAA tide model

Tide & slack timing

Recent diver reports

Dated firsthand observations from divers — not current conditions.

No diver reports for this site yet. — one dated observation helps every diver after you.

Dived here today — did the forecast match?

What Divers Say

Known for: Tautog (blackfish), Cunner, Black sea bass

Best time: Summer on slack tide; plan for depth and bottom time.

Based on community reviews and site data. Conditions vary — always verify before diving.

Best months, historically

What conditions have historically been typical at this site, month by month — not a forecast.

Jan61%5°C0.7 m
Feb71%4°C0.6 m
Mar69%5°C0.6 m
Apr82%8°C0.5 m
May91%13°C0.4 m
Jun94%18°C0.4 m
Jul98%23°C0.3 m
Aug89%22°C0.4 m
Sep89%21°C0.4 m
Oct74%18°C0.5 m
Nov62%13°C0.7 m
Dec57%8°C0.7 m

July hastypically had the largest share of favorable days here. Conditions vary year to year — this is historical context, not a forecast.

Based on 3 years of archive data. Bar height shows the share of days each month whose conditions have historically scored favorably.

Marine life seen at this site

Species noted at this site — not a promise of what you’ll encounter.

Species seen here

Fills & rentals nearby

No dive shops mapped within 25 km. Know one? Add it to the map.

Data updated June 2026

Site details

Mattituck Reef is a 50-acre NYSDEC artificial reef in Long Island Sound about 2.37 nautical miles northwest of Mattituck Inlet, in 72-100 ft of water. It holds a sunken vessel and concrete buoy sinkers and is one of the deeper Sound reefs, making it an advanced/deep boat dive. Black sea bass, tautog and scup gather on the structure; visibility is variable.

boatreefwreck

Depth (to ~100 ft) and Long Island Sound current; cold/dark at depth; limited visibility; boat traffic; fishing tackle.

Reviews

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