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Shore entry

Fort Stark

New Hampshire, United StatesDirections
Open Water suggested5–8 m depthShore entry5mm wetsuit typical

Fort Stark at a glance

Fort Stark is a shore dive site in New Hampshire, United States with depths of 4.6–7.6 m (15–25 ft). Typically most favorable Jul · from 3 years of archive data. Divers commonly see Rock crab, Cunner, and Winter flounder. Recent reports put the water around 17°C (63°F). Check the latest conditions and entry details before you go.

Marine model · graded 14h ago
0.3 mwaves — under half a meter expected

Tap a factor for its source and model point · Forecast 17°C · seasonal avg 18°C

Site hazards: Too shallow at low tide, slippery rocks, occasional fishing line

Read the full hazards ↓

Dive windows this week

Best: Sat
Fri7:00–19:00
Sat7:00–19:00
Sun7:00–19:00
Mon7:00–19:00
Tue7:00–19:00
Wed9:00–19:00
Thu7:00–19:00

Favorable windowModerate window— no window

First light 5:49 · Sunrise 6:18 · Sunset 19:00 · all windows sit within daylight

Source: Open-Meteo marine · model point 11 km from site · graded 14h ago

Forecast only — always assess conditions on site.

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: Rock crab, Cunner, American lobster
Best time: High tide, calm seas, summer through fall

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. Jan45%6°C1.3 m
  2. Feb32%4°C1.3 m
  3. Mar31%4°C1.5 m
  4. Apr59%6°C1.2 m
  5. May68%11°C1.1 m
  6. Jun86%15°C0.8 m
  7. Jul87%17°C0.8 m
  8. Aug85%18°C0.8 m
  9. Sep76%18°C1.1 m
  10. Oct57%14°C1.2 m
  11. Nov51%11°C1.1 m
  12. Dec38%8°C1.3 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

Facts from OpenStreetMap, corrected by the community — listed by distance only. Details change; confirm with the shop.

Shop facts come from OpenStreetMap and community corrections, shown nearest first. PickADive lists facts and contacts only — no listing is sponsored or ranked.

Data updated July 2026

Site details

A historic coastal defense site on the southeast corner of New Castle Island at the mouth of the Piscataqua River, now a state historic site with a sheltered cobble beach entry. The bottom is small boulders with kelp and rockweed giving way to eelgrass in 15-25 feet of water, with little current, making it one of the friendliest novice ocean dives on New Hampshire's short coast.

shore

Too shallow at low tide, slippery rocks, occasional fishing line

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