Great Egg Rock
Protected Area
Marsh Island and Days Creek CR
Why dive here
With 35+ marine species recorded in the area - including nurse sharks - Great Egg Rock offers some of New England's richest diving. Water ranges 4-19°C, warmest July, August, September.
Great Egg Rock in New England is a classic cold-water dive. You’re looking at rocky reef and kelp forests, home to the usual suspects like lobsters, crabs, and nudibranchs if you look closely. The main draw here is the chance to spot seals, especially in autumn. It's a solid choice for local divers keen on marine life specific to the region.
Safety Notes
Cold water this month (avg 15°C). Drysuit or thick wetsuit (7mm+) recommended.
Nearest Dive Centres to Great Egg Rock
Dive shops near Great Egg Rock
Undersea Divers
Boston Scuba Inc
So. Shore Divers
EC Divers Inc
Discover Diving
R & R Marine
Reviews for Great Egg Rock
Conditions
Ocean conditions, forecast and tides for Great Egg Rock
Great Egg Rock Ocean Conditions
Monthly averages for Great Egg Rock, sourced from Open-Meteo marine data - nearest station: Open-Meteo marine grid (42.6, -70.6) (0km away)
October Averages
Sea Temperature
15°C
59°F · Range: 12.8–18.1°C
Air Temperature
10°C
50°F
Wind Speed
3.78 m/s
7.3 knots
Atmospheric Pressure
1017 hPa
Based on 4 years of monitoring data · Data sources: Open-Meteo marine data
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