Portofino & Liguria, Italy
    Laguna di Venezia: Valle Averto

    Y-40

    Best months: Jul–Aug

    Protected Area

    Laguna di Venezia: Valle Averto

    Why dive here

    With 70+ marine species recorded in the area - including blue sharks, dolphins, humpback whales, mobula rays (devil rays) and oceanic whitetip sharks - Y-40 offers some of Portofino & Liguria's richest diving. Water ranges 14-27°C, warmest July, August, September.

    Best timeJul–Aug
    WetsuitA 3mm shorty or thin full wetsuit
    Marine lifeBlue Sharks, Dolphins, Humpback Whales, Mobula Rays (Devil Rays) and Oceanic Whitetip Sharks · 70+ species recorded
    Water14-27°C · warmest July, August, September
    StandoutRich in charismatic marine life

    Y-40 is Europe’s deepest thermal pool, located inland from Portofino. It's a controlled environment, offering various platforms and a central shaft dropping to 42 meters. This site suits divers looking to practice skills, test new gear, or complete courses without the challenges of open water, especially good for freedivers. You'll find a consistent temperature and clear visibility year-round.

    Today06:2417:3711h 13m daylightGolden hour 16:57

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    Conditions

    Ocean conditions, forecast and tides for Y-40

    Y-40 Ocean Conditions

    Monthly averages for Y-40, sourced from Open-Meteo marine data - nearest station: Open-Meteo marine grid (44.38, 9.02) (43km away)

    ExcellentGreatGoodFairPoor★Best monthsThis month

    October Averages

    Sea Temperature

    21°C

    70°F · Range: 19–23.2°C

    Air Temperature

    18°C

    64°F

    Wind Speed

    4.49 m/s

    8.7 knots

    Atmospheric Pressure

    1017.3 hPa

    Based on 4 years of monitoring data · Data sources: Open-Meteo marine data

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