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Map of Barnegat Light - LTC Jospeh P. Callahan Sr. Reef
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Boat entry

Barnegat Light - LTC Jospeh P. Callahan Sr. Reef

New Jersey, United States
Open Water suggestedNew Jersey offshore reef/wreck diving14–17 m (46–56 ft) depthBoat entry7mm or semi-dry + hood typical

Boat dive — see Entry & access.

Barnegat Light - LTC Jospeh P. Callahan Sr. Reef at a glance

Barnegat Light - LTC Jospeh P. Callahan Sr. Reef is a boat dive site in New Jersey, United States with depths of 14–17.1 m (46–56 ft). Typically most favorable Jul · from 3 years of archive data. Divers commonly see Blue mussel, Black sea bass, and Cunner. Recent reports put the water around 16°C (61°F). Check the latest conditions and entry details before you go.

No window today· next: tomorrow 8:00–19:00 · favorable

Forecast for this hour · 22:00 · run 9 h ago
0.8 m (2.8 ft)waves — under a meter expected (waves — about three feet expected)

Tap a factor for its source and model point · Forecast 16°C · seasonal avg 18°C ( · Forecast 61°F · seasonal avg 65°F)

Site hazards: New Jersey offshore reef/wreck diving

Read the full hazards ↓

Dive windows this week

SunNo window

0.9 m waves · 7 kn wind (3.1 ft waves · 7 kn wind)

Mon8:00–19:00 favorable

0.7 m waves · 9 kn wind (2.3 ft waves · 9 kn wind)

Tue8:00–18:00 favorable

0.9 m waves · 15 kn wind (2.8 ft waves · 15 kn wind)

Wed8:00–18:00 favorable

0.7 m waves · 5 kn wind (2.1 ft waves · 5 kn wind)

Thu8:00–18:00 favorable

0.5 m waves · 9 kn wind (1.5 ft waves · 9 kn wind)

Fri8:00–18:00 favorable

0.4 m waves · 10 kn wind (1.4 ft waves · 10 kn wind)

Sat8:00–18:00 favorable

0.4 m waves · 8 kn wind (1.2 ft waves · 8 kn wind)

Favorable windowModerate window— no window

Every forecast dive window each day, site-local time, from wave and wind forecasts. Numbers under each bar are daylight averages.

First light 6:49 · Sunrise 7:17 · Sunset 18:02 · some windows run past sunset

Source: Open-Meteo marine · model point 4.3 km from site · updated 25 Oct, 13:19 GMT-4

Forecast only — always assess conditions on site.

Compare this weekend’s windows near Barnegat Light - LTC Jospeh P. Callahan Sr. Reef

Forecast · NOAA tide model

Tide & slack timing

Loading tide predictions

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: Blue mussel, Black sea bass, Cunner
Best time: May through October is the prime season; late summer brings the warmest water and best visibility. Winter diving requires drysuit and experience.

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.

  1. January, 87% of days have historically been favorable, water has typically been 6°C (42°F), waves have typically been 1.0 m (3.1 ft), wind has typically been 12 knots
  2. February, 91% of days have historically been favorable, water has typically been 5°C (41°F), waves have typically been 1.0 m (3.3 ft), wind has typically been 12 knots
  3. March, 76% of days have historically been favorable, water has typically been 6°C (43°F), waves have typically been 1.1 m (3.6 ft), wind has typically been 13 knots
  4. April, 87% of days have historically been favorable, water has typically been 10°C (49°F), waves have typically been 1.0 m (3.1 ft), wind has typically been 12 knots
  5. May, 96% of days have historically been favorable, water has typically been 14°C (57°F), waves have typically been 0.9 m (2.8 ft), wind has typically been 10 knots
  6. June, 97% of days have historically been favorable, water has typically been 18°C (65°F), waves have typically been 0.8 m (2.5 ft), wind has typically been 11 knots
  7. July, 100% of days have historically been favorable, water has typically been 22°C (71°F), waves have typically been 0.7 m (2.2 ft), wind has typically been 10 knots, historically most favorable
  8. August, 96% of days have historically been favorable, water has typically been 22°C (72°F), waves have typically been 0.9 m (2.8 ft), wind has typically been 10 knots
  9. September, 87% of days have historically been favorable, water has typically been 22°C (72°F), waves have typically been 1.1 m (3.6 ft), wind has typically been 10 knots
  10. October, 88% of days have historically been favorable, water has typically been 18°C (65°F), waves have typically been 1.1 m (3.5 ft), wind has typically been 10 knots
  11. November, 96% of days have historically been favorable, water has typically been 13°C (56°F), waves have typically been 0.8 m (2.8 ft), wind has typically been 11 knots
  12. December, 90% of days have historically been favorable, water has typically been 8°C (46°F), waves have typically been 1.0 m (3.1 ft), wind has typically been 11 knots

July has typically 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

Rough labels: “Commonly seen” usually means two or more recorded sightings near this site in public dive logs (GBIF), “Occasionally seen” one; “Seasonal” and “Rarely seen” come from dive-guide research. Not a measured rate.

Fills & rentals nearby

No dive shops mapped within 25 km (16 mi). Know one? Add it to the map.

Data updated July 2026

Site details

Artificial reef built from M-60 Patton Main Battle Tank (MBT) NJDEP deployment record: Military vehicle, material: M-60 Patton Main Battle Tank (MBT), deployed 1997.

reef

New Jersey offshore reef/wreck diving — cold water (near-freezing at depth in winter, mid-70s F at surface in summer) with thermoclines; limited visibility (often 5-20 ft); currents and surge; heavy fishing pressure means monofilament line and hanging gear on structure (cutting tool essential); boat traffic (SMB and dive flag required); structures may have sharp edges and unstable sections.

Reviews

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