Bornholm, Denmark
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    Adlergrund

    Best months: Jan–Dec

    Protected Area

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    Why dive here

    With 66+ marine species recorded in the area - including jellyfish lake - Adlergrund offers some of Bornholm's richest reef diving. Water sits around 3°C.

    Marine lifeJellyfish Lake · 66+ species recorded
    Water3°C · warmest January, February, March
    CharacterReef dive

    Sarn Badrig, or St. Patrick’s Causeway, isn't your typical Cornish dive; it’s a geological marvel that stretches for miles off the coast. We love the sheer oddity of diving what feels like a submerged, ancient road. It’s a low-lying reef, more a long, linear shingle bank, but don't let that fool you into thinking it's barren. The real draw here is the scale and the history, not necessarily the vibrant corals. Visibility can be a mixed bag, as it often is in the UK, but on a good day, you’ll drop down onto a seabed dotted with life clinging to the stones. Think a parade of crabs scuttling over the shingle, conger eels peering from under larger rocks, and often, we’ve spotted European squid darting through the water column. Keep an eye out for the common scoters feeding in the shallows – a good sign of healthy benthic life. This site is best for divers who appreciate unique topography and the subtle beauty of temperate waters, rather than those chasing tropical colours. Dive it on a neap tide for the most comfortable experience.

    Safety Notes

    Cold water this month (avg 3°C). Drysuit or thick wetsuit (7mm+) recommended.

    Today04:5519:1714h 22m daylightGolden hour 18:28

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    Conditions

    Ocean conditions, forecast and tides for Adlergrund

    Adlergrund Ocean Conditions

    Monthly averages for Adlergrund, sourced from NOAA buoy data - nearest station: Open-Meteo grid (55.22, 14.83) (0km away)

    August Averages

    Sea Temperature

    3.3°C

    38°F

    Air Temperature

    18.04°C

    64°F

    Wind Speed

    6.06 m/s

    11.8 knots

    Atmospheric Pressure

    1014 hPa

    Based on 5 years of monitoring data · Data sources: NOAA NDBC

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