Arraial do Cabo, Brazil
    Monumento Natural Das Ilhas Cagarras

    Ilha Rasa - Guincho

    Best months: Mar–Apr

    Protected Area

    Monumento Natural Das Ilhas Cagarras

    Why dive here

    With 55+ marine species recorded in the area - including humpback whales - Ilha Rasa - Guincho offers some of Arraial do Cabo's richest reef diving. Water ranges 22-28°C, warmest January, February, March.

    Best timeMar–Apr
    WetsuitA 3mm shorty or thin full wetsuit
    Marine lifeHumpback Whales · 55+ species recorded
    Water22-28°C · warmest January, February, March
    CharacterReef dive

    We really like Ilha Rasa, particularly the Guincho side, for its easygoing vibe. It’s a solid spot for newer divers, or when you just want a relaxed dive without battling strong currents. Drop down and you’re often greeted by schools of cocoroca, dog-eye snappers, and those curious butterfly fish. The maximum depth here hits around 18 metres, which feels just right for an extended bottom time, letting you really take in the scene. What makes it special for us is the chance to really slow down and appreciate the smaller things. We’ve had some fantastic encounters here – not always the big pelagics, but plenty of smooth hammerheads if you're lucky, and we’ve spotted the occasional batfish or even a slender mojarra blending into the sand. Visibility hovers around 7 metres, which honestly, in Arraial, is pretty standard and forces you to focus. We’d suggest going early in the morning, before any boat traffic stirs things up, for the best chance at spotting turtles or one of those elusive pallid snake eels poking out of the sand. It’s honest, coastal diving and a good reminder that not every dive needs to be a deep blue expedition to be enjoyable.

    Today05:2517:5512h 30m daylightGolden hour 17:25

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    Conditions

    Ocean conditions, forecast and tides for Ilha Rasa - Guincho

    Ilha Rasa - Guincho Ocean Conditions

    Monthly averages for Ilha Rasa - Guincho, sourced from Open-Meteo marine data + Copernicus Marine (EU) - nearest station: Open-Meteo marine grid (-23.23, -44.16) (12km away)

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    October Averages

    Sea Temperature

    23°C

    73°F · Range: 17.8–26.6°C

    Current Speed

    8.49 cm/s

    Direction: SW (225°)

    Salinity

    35.38 PSU

    Based on 4 years of monitoring data · Data sources: Open-Meteo marine data + Copernicus Marine (EU)

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