33m
    West Coast (Gothenburg), Sweden
    2000804 Vinga-skärgården

    JANSON

    Best months: Jul–Aug

    Protected Area

    2000804 Vinga-skärgården

    Why dive here

    With 121+ marine species recorded in the area - including dolphins, dwarf minke whales, humpback whales, orcas and seals & sea lions - JANSON offers some of West Coast (Gothenburg)'s richest wreck diving. Water ranges 3-18°C, warmest July, August, September.

    Best timeJul–Aug
    WetsuitA 5mm wetsuit
    Marine lifeDolphins, Dwarf Minke Whales, Humpback Whales, Orcas and Seals & Sea Lions · 121+ species recorded
    Water3-18°C · warmest July, August, September
    CharacterWreck dive · max 33m
    StandoutRich in charismatic marine life

    Janson is one of our favourite wreck dives on the Swedish west coast. This old fishing vessel sits upright at 33 metres, her masts still reaching towards the surface, creating an impressive silhouette against the green light. We love how intact she is, especially the wheelhouse, which you can peek into and still imagine the skipper at the helm. It’s a proper exploration dive, with plenty of entry points into the holds where huge shoals of cod and pollock often swirl around you. The structure itself is heavily encrusted with plumose anemones, creating a soft, colourful fuzz over the rusted metal. Look closely and you'll spot plenty of squat lobsters tucked into every crevice, along with the occasional wolf fish lurking in darker corners. We'd suggest diving Janson on a calm day; while the currents aren't usually fierce, the surface swim can be a bit of a haul if there’s a chop. It's a dive that rewards careful buoyancy and a good torch, perfect for experienced wreck enthusiasts who appreciate a bit of history beneath the waves.

    Typical JANSON Dive Profile

    15m30mSafety Stop0m33m max~20 min estimated bottom time

    Illustrative profile based on site depth and type. Actual dive profiles vary - always follow your dive computer and training.

    Safety Notes

    Deep dive (33m) - monitor air consumption closely. Advanced certification recommended.

    Wreck site - avoid penetration without wreck diving certification. Watch for sharp metal and entanglement hazards.

    Cold water this month (avg 13°C). Drysuit or thick wetsuit (7mm+) recommended.

    Always perform a 3-minute safety stop at 5m before surfacing.

    Today06:4217:2610h 44m daylightGolden hour 16:32

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    Conditions

    Ocean conditions, forecast and tides for JANSON

    JANSON Ocean Conditions

    Monthly averages for JANSON, sourced from Open-Meteo marine data - nearest station: Open-Meteo marine grid (57.57, 11.03) (3km away)

    ExcellentGreatGoodFairPoor★Best monthsThis month

    October Averages

    Sea Temperature

    13°C

    56°F · Range: 10.6–15.8°C

    Air Temperature

    10°C

    50°F

    Wind Speed

    6.56 m/s

    12.8 knots

    Atmospheric Pressure

    1010.2 hPa

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

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