Medes Islands, Spain

    Rabiou, Arche

    Best months: Jun–Sep

    Why dive here

    With 77+ marine species recorded in the area - including blue sharks, dolphins, ocean sunfish (mola mola), octopuses and sea turtles - Rabiou, Arche offers some of Medes Islands's richest cave diving. Water ranges 14-24°C, warmest July, August, September.

    Best timeJun–Sep
    WetsuitA 3mm full wetsuit
    Marine lifeBlue Sharks, Dolphins, Ocean Sunfish (Mola Mola), Octopuses and Sea Turtles · 77+ species recorded
    Water14-24°C · warmest July, August, September
    CharacterCave dive
    StandoutRich in charismatic marine life

    Rabiou, Arche, in the Medes Islands, is one of those dives that sticks with you. It’s a proper swim-through, a natural arch carved into the rock, not just a little crack. You start by descending into this cool, blue twilight zone, following the rock face down. The sensation of swimming through that arch is incredible; the light plays on the walls, shafts breaking through the surface above, illuminating the sponges and small anemones clinging on. We always tell people to take it slow here, drift through and let your eyes adjust. Our favourite part is often just after you exit the arch, when you look back. The contrast between the open water and the dark opening you just came from is really striking. You’ll spot the usual Mediterranean suspects – lots of schooling damselfish, small wrasse darting between crevices. Keep an eye on the rock walls for speckled sea-louse and Alder's Necklace Shells, they’re often overlooked but really interesting when you find them. It’s not a deep dive, but the low light conditions mean it feels more adventurous. This is a perfect site for divers who appreciate the geological features as much as the marine life, offering a genuine sense of exploration without being overly challenging.

    Safety Notes

    Overhead environment - never enter without proper cave/cavern training, redundant equipment, and a guideline.

    Today05:4216:5911h 17m daylightGolden hour 16:21

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    Conditions

    Ocean conditions, forecast and tides for Rabiou, Arche

    Rabiou, Arche Ocean Conditions

    Monthly averages for Rabiou, Arche, sourced from Open-Meteo marine data + Copernicus Marine (EU) - nearest station: Open-Meteo marine grid (43.2, 5.22) (37km away)

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    October Averages

    Sea Temperature

    20°C

    69°F · Range: 17.4–22.8°C

    Current Speed

    9.85 cm/s

    Direction: SW (246°)

    Chlorophyll-a

    0.182 mg/m³

    Clear water

    Salinity

    38.21 PSU

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

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