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Map of HubLine Boston Harbor
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Boat entry

HubLine Boston Harbor

Massachusetts, United States
Open Water suggested8 m (26 ft) depthBoat entry7mm or semi-dry + hood typical

Boat dive — see Entry & access.

HubLine Boston Harbor at a glance

HubLine Boston Harbor is a boat dive site in Massachusetts, United States with depths of up to 7.9 m (26 ft). Typically most favorable Jun–Aug · from 3 years of archive data. Recent reports put the water around 14°C (57°F). Check the latest conditions and entry details before you go.

Next window today· 8:00–18:00 · favorable · sunset 17:45

Forecast for this hour · 0:00 · run 10 h ago
0.4 m (1.3 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 57°F · seasonal avg 59°F)

Dive windows this week

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

0.3 m waves · 7 kn wind (0.9 ft waves · 7 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

0.3 m waves · 2 kn wind (1.1 ft waves · 2 kn wind)

Thu8:00–18:00 favorable

0.3 m waves · 10 kn wind (0.9 ft waves · 10 kn wind)

Fri8:00–18:00 favorable

0.3 m waves · 11 kn wind (0.8 ft waves · 11 kn wind)

Sat8:00–18:00 favorable

0.1 m waves · 4 kn wind (0.3 ft waves · 4 kn wind)

SunNot in the forecast yet

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 6:41 · Sunrise 7:09 · Sunset 17:45 · some windows run past sunset

Source: Open-Meteo marine · model point 4.3 km from site · updated 25 Oct, 13:22 GMT-4

Forecast only — always assess conditions on site.

Compare this weekend’s windows near HubLine Boston Harbor

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?

Best months, historically

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

  1. January, 89% of days have historically been favorable, water has typically been 5°C (40°F), waves have typically been 0.8 m (2.6 ft), wind has typically been 13 knots
  2. February, 92% of days have historically been favorable, water has typically been 3°C (38°F), waves have typically been 0.8 m (2.5 ft), wind has typically been 13 knots
  3. March, 87% of days have historically been favorable, water has typically been 5°C (40°F), waves have typically been 0.9 m (2.9 ft), wind has typically been 14 knots
  4. April, 94% of days have historically been favorable, water has typically been 7°C (45°F), waves have typically been 0.7 m (2.3 ft), wind has typically been 13 knots
  5. May, 97% of days have historically been favorable, water has typically been 12°C (54°F), waves have typically been 0.6 m (2.1 ft), wind has typically been 11 knots
  6. June, 100% of days have historically been favorable, water has typically been 17°C (63°F), waves have typically been 0.5 m (1.5 ft), wind has typically been 11 knots, historically most favorable
  7. July, 100% of days have historically been favorable, water has typically been 19°C (66°F), waves have typically been 0.4 m (1.3 ft), wind has typically been 10 knots, historically most favorable
  8. August, 100% of days have historically been favorable, water has typically been 19°C (67°F), waves have typically been 0.5 m (1.6 ft), wind has typically been 10 knots, historically most favorable
  9. September, 97% of days have historically been favorable, water has typically been 19°C (66°F), waves have typically been 0.6 m (2.1 ft), wind has typically been 10 knots
  10. October, 95% of days have historically been favorable, water has typically been 15°C (59°F), waves have typically been 0.8 m (2.5 ft), wind has typically been 11 knots
  11. November, 94% of days have historically been favorable, water has typically been 11°C (51°F), waves have typically been 0.7 m (2.1 ft), wind has typically been 13 knots
  12. December, 92% of days have historically been favorable, water has typically been 6°C (44°F), waves have typically been 0.7 m (2.3 ft), wind has typically been 13 knots

June, July, and August have 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 recorded at this site

No recorded sightings data for this site yet. Species lists appear as GBIF records and diver reports accumulate.

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

Artificial reef built from Rocks

reef

No hazards recorded for this site yet — that never means there are none. Ask a local operator before you dive.

Reviews

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