Kreidesee Hemmoor centres on flooded quarries and gravel pits across Lower Saxony, where freshwater lakes offer everything from shallow training grounds to steep chalk walls and deep drop-offs. Wrecks and artificial reef structures feature at several sites, most accessible directly from shore. The region suits beginners at the majority of lakes while intermediate divers can push deeper at the headline site. Freshwater fish including Common Perch, Pike, and Common Carp share the water with the area's signature Harbor Seal.
Monthly water temperature across Kreidesee Hemmoor's sites, from satellite sea-surface data corrected for depth. The band shows the site-to-site spread.
Water temperatures follow a clear seasonal curve, rising from cold winter lows through spring and peaking in late summer before dropping sharply through autumn. The warmest and most comfortable diving falls between late spring and early autumn, when conditions favour lighter exposure suits. Winter diving is possible but demands proper thermal protection for the cold freshwater.
48 operators
41 more sites to explore
Water temperature around Kreidesee Hemmoor ranges from about 5°C in January to 20°C in August, based on satellite sea-temperature data for its dive sites.
In the warm season (about 20°C) a 5mm suit is comfortable in Kreidesee Hemmoor; in the coldest months (about 5°C) step up to a drysuit.
Fin maps 53 sites in Kreidesee Hemmoor (51 scuba diving sites and 3 snorkelling spots, with some suited to both).
Across Kreidesee Hemmoor's dive sites, May, June, July, August and September are most often reported as the best months to visit.
The region's freshwater lakes are home to Pike, Common Perch, Pike Perch, Common Carp, and Crayfish. Invertebrates including Sponge, Dead Man's Fingers, Sea Anemone, and Tube Worm colonise artificial structures. The Harbor Seal is the signature species of the region and has been observed across multiple sites.
The majority of sites in the region are rated for beginners, with shallow, shore-entry lakes such as Moellersee, Dankerner See, and Blankenburger See providing calm conditions and modest depths ideal for newly certified divers or those completing training dives. Intermediate divers are catered for at sites like the main Kreidesee Hemmoor lake and the Cimbria Wreck, where greater depth and moderate currents demand more experience.
The vast majority of sites in Kreidesee Hemmoor are shore-entry, meaning no boat is needed for most dives. A small number of sites, including the Cimbria Wreck and Heike Wreck, require boat access. Several operators based in the region, including Tauchbasis Kreidesee Hemmoor and Into Abyss Technical Diving, can assist with boat trips and guided dives.
Flooded quarries and gravel pits form the backbone of diving here, offering artificial reefs made from deliberately sunk structures, walls, drop-offs, and wrecks. Sites like Oortkaaten, Banter See, and the main Kreidesee Hemmoor lake combine wreck and artificial reef diving in a single visit. Muck diving is also available at Badesee Tannenhausen Seeterrassen, giving macro-focused divers something to explore.
