Green Flats Reef
Protected Area
City Island
Why dive here
With 35+ marine species recorded in the area - including nurse sharks - Green Flats Reef offers some of New England's richest reef diving. Water ranges 4-19°C, warmest July, August, September.
New England diving means something a little different, and Green Flats Reef is a good example of that cooler-water charm. We typically see a surprising number of invertebrates here, with Forbes sea stars clinging to the rocks and acorn barnacles practically everywhere. Keep an eye out for blue mussels and edible periwinkles too. You might even spot a solitary glassy-bubble if you’re lucky. This spot is great for macro photographers or anyone who enjoys a slower, more deliberate dive, appreciating the smaller details New England has to offer.
Safety Notes
Cold water this month (avg 15°C). Drysuit or thick wetsuit (7mm+) recommended.
Nearest Dive Centres to Green Flats Reef
Dive shops near Green Flats Reef
Scuba New York
Stingray Divers
Scuba Learning Center
Abyss Scuba
Dark Water Divers
Reviews for Green Flats Reef
Conditions
Ocean conditions, forecast and tides for Green Flats Reef
Green Flats Reef Ocean Conditions
Monthly averages for Green Flats Reef, 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
Plan & book
Ways to dive New England, from day trips to liveaboards.
Day trips & courses
via GetYourGuideGuided dives, courses and snorkel trips with instant booking.
Find dive trips in New EnglandPlaces to stay
via Booking.comHotels and dive resorts near New England.
Search stays in New EnglandDive insurance
Most travel insurance excludes or limits scuba. Check what you need before you go.
Dive insurance explainedPartner links: we may earn a commission if you book, at no extra cost to you. How we make money
Where to Stay near Green Flats Reef
Prices from Booking.com. We may earn a commission at no extra cost to you.