5-15m
    Roatán, Honduras
    Sistema de Humedales de la Isla de Utila

    Big Rock

    Best months: Jan–May

    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 - Big Rock offers some of Roatán's richest reef diving. Water ranges 27-30°C, warmest August, September, October.

    Best timeJan–May
    WetsuitA 3mm shorty or thin full wetsuit
    Marine lifeBarracuda, Orcas, Sea Turtles, Whale Sharks and Pufferfish · 168+ species recorded
    Water27-30°C · warmest August, September, October
    CharacterReef dive · max 5-15m
    StandoutExceptional marine biodiversity

    Big Rock in Roatán? It’s a site we always enjoy, particularly for its distinct personality. While often busy with students on the shallower parts, the real magic happens when you drop onto the wall itself. The reef here isn't about dramatic canyons; it’s a beautifully contoured wall, full of nooks and crannies where we often spot sleepy parrotfish tucked away. We love the sandy patch that spills from the wall’s edge. It’s not just a barren expanse; we’ve spent ages here watching squadrons of horse-eye jacks sweep past and the unusual sight of those enormous needlefish hanging perfectly still, almost invisible against the surface shimmer. For macro lovers, keep an eye out for the redlip blennies popping their heads from tiny holes, or the intricate patterns of a chain moray peeking from the rock. Visibility typically sits around 18m, giving you a good view of the overall structure, and the current is usually pretty mellow, making it a relaxing dive. Our tip? Go early to beat the crowds, or check with your dive shop for their quietest times. It’s a perfect dive for those who enjoy taking their time and really exploring the smaller details of a healthy Caribbean reef.

    Typical Big Rock Dive Profile

    5mSafety Stop0m5m max~60 min estimated bottom time

    Illustrative profile based on site depth and type. Actual dive profiles vary - always follow your dive computer and training.

    Today05:4017:3111h 52m daylightGolden hour 17:02

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    Conditions

    Ocean conditions, forecast and tides for Big Rock

    Big Rock Ocean Conditions

    Monthly averages for Big Rock, sourced from Open-Meteo marine data + Copernicus Marine (EU) - nearest station: Open-Meteo marine grid (16.27, -86.6) (5km away)

    ExcellentGreatGoodFairPoor★Best monthsThis month

    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)

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