North Sea Coast, Denmark
    Sejerø Bugt og Nekselø

    Sydøstrev

    Best months: Jul–Aug

    Protected Area

    Sejerø Bugt og Nekselø

    Why dive here

    With 95+ marine species recorded in the area - including seals & sea lions, sea turtles and jellyfish lake - Sydøstrev offers some of North Sea Coast's richest reef diving. Water ranges 3-19°C, warmest July, August, September.

    Best timeJul–Aug
    WetsuitA 5mm wetsuit
    Marine lifeSeals & Sea Lions, Sea Turtles and Jellyfish Lake · 95+ species recorded
    Water3-19°C · warmest July, August, September
    CharacterReef dive

    Sydøstrev often gets overlooked, nestled as it is off Denmark's North Sea coast, but for those willing to brave the chill, it’s a truly rewarding dive. We’ve found the best days are when the sea has been calm for a few days, letting the visibility stretch out past 10 meters, painting the place in shades of green and blue. What makes it special for us is the sheer resilience of life here. You’ll weave through low-lying rocky structures, not towering coral gardens, but every surface is a tapestry of Hairy Sea-mats and Blue Mussels, swaying gently with the surge. Keep an eye out for the unusual residents. We’ve had some fantastic encounters with Starry Rays gliding past, and the Common Pipefish blend so well into the scenery you have to really look. It’s also a surprisingly good spot for macro, with tiny anemones clinging to the rocks and the occasional Sand Mason poking its head out. Our favourite time to dive here is late summer; the water is at its warmest, which means "less bracing," and there’s a noticeable uptick in juvenile fish, including tiny anchovies darting about. This isn’t a dive for beginners; the conditions can be temperamental, but for experienced cold-water divers, it offers a raw, wild beauty that’s hard to beat.

    Safety Notes

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

    Today06:3817:2710h 49m daylightGolden hour 16:36

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    Conditions

    Ocean conditions, forecast and tides for Sydøstrev

    Sydøstrev Ocean Conditions

    Monthly averages for Sydøstrev, sourced from Open-Meteo marine data - nearest station: Open-Meteo marine grid (55.31, 9.86) (1km away)

    ExcellentGreatGoodFairPoor★Best monthsThis month

    October Averages

    Sea Temperature

    13°C

    56°F · Range: 10.7–16.8°C

    Air Temperature

    11°C

    52°F

    Wind Speed

    7.69 m/s

    14.9 knots

    Atmospheric Pressure

    1010.5 hPa

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

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