DivePlnr
    Grotta del Formaggio dive site
    cave
    Ustica, Italy
    Fondali del Plemmirio

    Grotta del Formaggio

    Best months: Sep

    Protected Area

    Fondali del Plemmirio

    Why dive here

    With 60+ marine species recorded in the area - including dolphins, sea turtles and sperm whales - Grotta del Formaggio offers some of Ustica's richest cave diving. Water ranges 15-29°C, warmest July, August, September.

    Best timeSep
    WetsuitA 3mm shorty or thin full wetsuit
    Marine lifeDolphins, Sea Turtles and Sperm Whales · 60+ species recorded
    Water15-29°C · warmest July, August, September
    CharacterCave dive
    StandoutDramatic cave topography

    The Grotta del Formaggio in Ustica is a unique cave dive, known for its distinctive rock formations that resemble Swiss cheese, giving the site its name. Inside, the play of light through the water creates some interesting visual effects. It’s not a site for big pelagics, but we often spot small reef fish tucked into the crevices. This dive is best for divers comfortable in overhead environments looking for something a bit different.

    Safety Notes

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

    Today06:0317:2911h 26m daylightGolden hour 16:54

    Nearest Dive Centres to Grotta del Formaggio

    Dive shops near Grotta del Formaggio

    GESTIONE MARE DIVING & CHARTER

    11km away
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    Conditions

    Ocean conditions, forecast and tides for Grotta del Formaggio

    Grotta del Formaggio Ocean Conditions

    Monthly averages for Grotta del Formaggio, sourced from Open-Meteo marine data - nearest station: Open-Meteo marine grid (38.1, 14.46) (15km away)

    ExcellentGreatGoodFairPoor★Best monthsThis month

    October Averages

    Sea Temperature

    24°C

    75°F · Range: 22.1–25.7°C

    Air Temperature

    22°C

    71°F

    Wind Speed

    7.27 m/s

    14.1 knots

    Atmospheric Pressure

    1018.1 hPa

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

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