Medes Islands, Spain

    Petit Sec

    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 - Petit Sec offers some of Medes Islands's richest 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
    StandoutRich in charismatic marine life

    Petit Sec is one of our favourites in the Medes, particularly when the conditions line up. You’re dropping onto a submerged pinnacle that offers a bit of everything, but what we really love is the chance to find some of the smaller, less common residents. We’re talking about those colourful Alder’s Necklace Shells slowly cruising the rocks, or a particularly showy Shore Feather Duster Worm swaying with the surge. The currents here can pick up, so it’s not always a beginner's dream, but if you’re comfortable moving with the water, it opens up some cracking drifts. We’ve had some cracking encounters with moonfish darting past in the bluer water off the main pinnacle, and the light filtering through the schools of barracuda can be spectacular. Look closely on the walls for tiny hooded shrimp and if you're lucky, you might even spot the odd razorback feeding on the sand. We’d suggest going early in the morning for the best light and fewer crowds. Petit Sec really shines for macro enthusiasts and those who appreciate a dive with a bit more energy.

    Today05:4316:5911h 17m daylightGolden hour 16:21

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    Conditions

    Ocean conditions, forecast and tides for Petit Sec

    Petit Sec Ocean Conditions

    Monthly averages for Petit Sec, 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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