Penfield Reef
Protected Area
Aspectuck Land Trust Inc 3
Why dive here
With 35+ marine species recorded in the area - including nurse sharks - Penfield Reef offers some of New England's richest reef diving. Water ranges 4-19°C, warmest July, August, September.
Penfield Reef isn't a tropical postcard. Let's get that out of the way. This is classic New England diving, and we absolutely love it for its rugged charm and surprising residents. You're not coming here for coral, but for the thrill of exploring a rocky, kelp-draped environment that feels genuinely wild. We've spent more than a few hours finning around Penfield, usually at slack tide to avoid fighting the surge. Visibility can swing wildly; one day it's 10 metres of milky green, the next you're squinting through a thick pea soup. But when it's good, it's really good. Keep an eye peeled for the common seals, often lounging on the rocks or zipping past, their curiosity often getting the better of them. We've also had fantastic encounters with long-armed hermit crabs scuttling over the rocks and schools of butterfish darting through the kelp. It’s a site that rewards patience and a keen eye for macro life amongst the algae. This site is perfect for cold-water divers who appreciate unique marine life and the quiet challenge of a temperate dive. If you're looking for a different kind of beauty, Penfield delivers a truly authentic New England underwater experience.
Safety Notes
Cold water this month (avg 15°C). Drysuit or thick wetsuit (7mm+) recommended.
Nearest Dive Centres to Penfield Reef
Dive shops near Penfield Reef
ORBIT
School of Fish Swim and Scuba Inc.
The Dive Shop Aquatic Center
Abyss Scuba
New England Dive
Reviews for Penfield Reef
Conditions
Ocean conditions, forecast and tides for Penfield Reef
Penfield Reef Ocean Conditions
Monthly averages for Penfield 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
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