Sanctuary Hill
Protected Area
Thacher Island National Wildlife Refuge
Why dive here
With 35+ marine species recorded in the area - including nurse sharks - Sanctuary Hill offers some of New England's richest reef diving. Water ranges 4-19°C, warmest July, August, September.
Sanctuary Hill in New England offers a quieter dive. We’ve found it’s often a good alternative when other sites are crowded or the weather’s a bit rough elsewhere. You’ll typically find rockfish tucked into crevices and maybe a lobster or two scuttling across the bottom. It’s a solid choice for a relaxed dive, particularly if you appreciate the calmer pace and unique feel of New England’s cold-water environments.
Typical Sanctuary Hill Dive Profile
Illustrative profile based on site depth and type. Actual dive profiles vary - always follow your dive computer and training.
Safety Notes
Cold water this month (avg 15°C). Drysuit or thick wetsuit (7mm+) recommended.
Reviews for Sanctuary Hill
Conditions
Ocean conditions, forecast and tides for Sanctuary Hill
Sanctuary Hill Ocean Conditions
Monthly averages for Sanctuary Hill, 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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