Bornholm, Denmark
    K - Strict

    Wreck of MS Jan Heweliusz

    Best months: Jul–Sep

    Protected Area

    K - Strict

    Why dive here

    With 66+ marine species recorded in the area - including jellyfish lake - Wreck of MS Jan Heweliusz offers some of Bornholm's richest wreck diving. Water ranges 3-18°C, warmest July, August, September.

    Best timeJul–Sep
    WetsuitA 5mm wetsuit
    Marine lifeJellyfish Lake · 66+ species recorded
    Water3-18°C · warmest July, August, September
    CharacterWreck dive

    The MS Jan Heweliusz wreck off Bornholm isn't your average sunny, tropical dive. This is proper northern wreck diving, and we absolutely love it for that. The Heweliusz, a Polish ferry that capsized in a storm in 1993, now lies upside down in around 25-30 metres of water. It's a sombre place, steeped in history, but also a fantastic habitat. Dropping down, the sheer scale hits you. The hull, with its distinctive bow ramp, stretches out. You’ll often find yourself in low visibility, maybe 5-10 metres, which adds to the atmospheric gloom. We've often seen schools of Pollock darting through the superstructure, and lumpsuckers clinging to exposed metalwork. It’s cold water, so a drysuit is a given, but the adrenaline keeps you warm. Exploring the deck areas, now the underside, is disorienting but fascinating, with debris scattered around. It’s a dive for experienced wreck enthusiasts who appreciate the challenge and the raw history. Go in summer for the best chance of decent visibility.

    Safety Notes

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

    Cold water this month (avg 14°C). Drysuit or thick wetsuit (7mm+) recommended.

    Today06:2417:1710h 53m daylightGolden hour 16:28

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    Conditions

    Ocean conditions, forecast and tides for Wreck of MS Jan Heweliusz

    Wreck of MS Jan Heweliusz Ocean Conditions

    Monthly averages for Wreck of MS Jan Heweliusz, sourced from Open-Meteo marine data - nearest station: Open-Meteo marine grid (54.94, 13.85) (7km away)

    ExcellentGreatGoodFairPoor★Best monthsThis month

    October Averages

    Sea Temperature

    14°C

    57°F · Range: 11.7–16.3°C

    Air Temperature

    12°C

    53°F

    Wind Speed

    8.16 m/s

    15.9 knots

    Atmospheric Pressure

    1013.3 hPa

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

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