Diamond Cay
Protected Area
Sistema de Humedales de la Isla de Utila
Why dive here
With 168+ marine species recorded in the area - including barracuda, orcas, sea turtles, whale sharks and pufferfish - Diamond Cay offers some of Roatán's richest cave diving. Water ranges 27-30°C, warmest August, September, October.
Diamond Cay is one of those Roatán sites we just adore for an easy, rewarding drift. You drop in near a small cay, then let the current carry you along a narrow coral ridge. It’s perfect for divers who love to just float and watch the show. Look out for the resident flamefish darting in and out of the crevices, and we’ve often spotted pygmy filefish camouflaged against the gorgonians. The reef here slopes gently to about 22m, bordered by wide sand channels that make a lovely contrast to the coral. Keep an eye on the sandy patches for sleeper gobies and the occasional milk conch ploughing along. We’d suggest going in the morning; the light filtering through the water really makes the reds and oranges of the sponges pop. The black coral colony at 24m is impressive, but for sheer colour, we love the huge common sea fans further south. You’ll experience a relaxed drift, observing everything from tiny surge clingfish to cruising barracuda, making it a great choice for a second dive of the day.
Safety Notes
Overhead environment - never enter without proper cave/cavern training, redundant equipment, and a guideline.
Nearest Dive Centres to Diamond Cay
Dive shops near Diamond Cay
Coral View Utila Dive Center
Captain Morgans Dive Center
Alton's Dive Center
Freedive Utila
Underwater Vision Dive Center
Utila Dive Center
Reviews for Diamond Cay
Conditions
Ocean conditions, forecast and tides for Diamond Cay
Diamond Cay Ocean Conditions
Monthly averages for Diamond Cay, sourced from Open-Meteo marine data + Copernicus Marine (EU) - nearest station: Open-Meteo marine grid (16.27, -86.6) (5km away)
October Averages
Sea Temperature
30°C
86°F · Range: 29–31.6°C
Current Speed
1.41 cm/s
Direction: NW (315°)
Chlorophyll-a
0.052 mg/m³
Very clear (oligotrophic)
Salinity
35.96 PSU
Based on 4 years of monitoring data · Data sources: Open-Meteo marine data + Copernicus Marine (EU)
Plan & book
Ways to dive Roatán, from day trips to liveaboards.
Day trips & courses
via GetYourGuideGuided dives, courses and snorkel trips with instant booking.
Find dive trips in RoatánPlaces to stay
via Booking.comHotels and dive resorts near Roatán.
Search stays in RoatánDive 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 Diamond Cay
Prices from Booking.com. We may earn a commission at no extra cost to you.
