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Shore entry

Niles Beach

Massachusetts, United StatesDirections
Open Water suggestedVery shallow (15-25 ft max); boat traffic from Gloucester Harbor and the adjacent yacht club moorings3–8 m (10–25 ft) depthShore entry7mm or semi-dry + hood typical

Niles Beach at a glance

Niles Beach is a shore dive site in Massachusetts, United States with depths of 3–7.6 m (10–25 ft). Typically most favorable Jul · from 3 years of archive data. Divers commonly see Cunner, American lobster, and Longfin squid. Recent reports put the water around 14°C (56°F). Check the latest conditions and entry details before you go.

Favorable window now· until 18:00 · sunset 17:43

Forecast for this hour · 9:00 · run 7 h ago
0.4 m (1.4 ft)waves — under half a meter expected (waves — about a foot expected)

Tap a factor for its source and model point · Forecast 14°C · seasonal avg 15°C ( · Forecast 56°F · seasonal avg 59°F)

Site hazards: Very shallow (15-25 ft max); boat traffic from Gloucester Harbor and the adjacent yacht club moorings

Read the full hazards ↓

Dive windows this week

Smallest waves: Sat
Mon8:00–18:00 favorable

0.4 m waves · 6 kn wind (1.3 ft waves · 6 kn wind)

Tue8:00–18:00 favorable

0.6 m waves · 6 kn wind (1.9 ft waves · 6 kn wind)

Wed8:00–18:00 favorable

0.4 m waves · 5 kn wind (1.1 ft waves · 5 kn wind)

Thu8:00–18:00 favorable

0.4 m waves · 11 kn wind (1.2 ft waves · 11 kn wind)

Fri8:00–18:00 favorable

0.3 m waves · 12 kn wind (0.9 ft waves · 12 kn wind)

Sat8:00–18:00 favorable

0.2 m waves · 7 kn wind (0.5 ft waves · 7 kn wind)

Sun8:00–18:00 favorable

0.3 m waves · 9 kn wind (0.9 ft waves · 9 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 6:40 · Sunrise 7:09 · Sunset 17:43 · some windows run past sunset

Source: Open-Meteo marine · model point 5.6 km from site · updated 26 Oct, 01:26 GMT-4

Forecast only — always assess conditions on site.

Compare this weekend’s windows near Niles Beach

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: Cunner, American lobster, Green crab
Best time: May-October; the go-to backup when storms or northeast swell blow out the open-coast sites — Niles is often flat calm when everything else is undiveable.

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, 34% of days have historically been favorable, water has typically been 6°C (43°F), waves have typically been 1.5 m (4.8 ft), wind has typically been 23 knots
  2. February, 36% of days have historically been favorable, water has typically been 5°C (40°F), waves have typically been 1.4 m (4.6 ft), wind has typically been 22 knots
  3. March, 35% of days have historically been favorable, water has typically been 5°C (40°F), waves have typically been 1.6 m (5.1 ft), wind has typically been 22 knots
  4. April, 59% of days have historically been favorable, water has typically been 7°C (44°F), waves have typically been 1.2 m (3.9 ft), wind has typically been 19 knots
  5. May, 70% of days have historically been favorable, water has typically been 11°C (52°F), waves have typically been 1.1 m (3.6 ft), wind has typically been 18 knots
  6. June, 82% of days have historically been favorable, water has typically been 16°C (61°F), waves have typically been 0.8 m (2.6 ft), wind has typically been 16 knots
  7. July, 90% of days have historically been favorable, water has typically been 19°C (66°F), waves have typically been 0.7 m (2.4 ft), wind has typically been 16 knots, historically most favorable
  8. August, 85% of days have historically been favorable, water has typically been 19°C (67°F), waves have typically been 0.8 m (2.7 ft), wind has typically been 15 knots
  9. September, 77% of days have historically been favorable, water has typically been 19°C (66°F), waves have typically been 1.1 m (3.6 ft), wind has typically been 16 knots
  10. October, 58% of days have historically been favorable, water has typically been 15°C (59°F), waves have typically been 1.3 m (4.3 ft), wind has typically been 19 knots
  11. November, 43% of days have historically been favorable, water has typically been 12°C (53°F), waves have typically been 1.2 m (4.0 ft), wind has typically been 21 knots
  12. December, 38% of days have historically been favorable, water has typically been 8°C (47°F), waves have typically been 1.4 m (4.5 ft), wind has typically been 22 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

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

Niles Beach sits inside Gloucester Harbor on Eastern Point, giving it some of the most protected water on Cape Ann. The gradually sloping sandy bottom only reaches about 15-25 ft, so it serves mainly as a training venue and a reliable backup when ocean-facing sites are blown out. Summer parking requires a Gloucester resident beach sticker, though walk-on access is open to all.

muckshore

Very shallow (15-25 ft max); boat traffic from Gloucester Harbor and the adjacent yacht club moorings — tow a dive flag and stay alert; cold water; reduced visibility after rain or boat wakes.

Reviews

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