Southampton Reef
Protected Area
Conception Island National Park
Why dive here
With 362+ marine species recorded in the area - including barracuda, blacktip reef sharks, dolphins, dwarf minke whales and humpback whales - Southampton Reef offers some of Long Island's richest reef diving. Water ranges 26-30°C, warmest August, September, October.
Southampton Reef offers a solid dive on Long Island. We've often seen schools of Spot Snapper darting around the corals, and it's a good spot for blenny enthusiasts, with both Smooth-eye and Blackcheek Blennies making appearances. Keep an eye out for the Smoothlip Stargazer – they're masters of camouflage, burying themselves in the sand with just their eyes poking out. It's a relaxed dive, good for a couple of tanks and suitable for divers who enjoy taking their time to spot the smaller, more elusive critters.
Reviews for Southampton Reef
Conditions
Ocean conditions, forecast and tides for Southampton Reef
Southampton Reef Ocean Conditions
Monthly averages for Southampton Reef, sourced from Open-Meteo marine data + Copernicus Marine (EU) - nearest station: Open-Meteo marine grid (23.66, -74.95) (14km away)
October Averages
Sea Temperature
30°C
85°F · Range: 28–30.8°C
Current Speed
8.94 cm/s
Direction: NW (333.4°)
Chlorophyll-a
0.053 mg/m³
Very clear (oligotrophic)
Salinity
36.55 PSU
Based on 4 years of monitoring data · Data sources: Open-Meteo marine data + Copernicus Marine (EU)
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