Grömitzer Welle

The Grömitzer Welle stands directly on the Kurpromenade of the Baltic resort of Grömitz, beside the pier and next to the a-ja Resort, and it is a genuine seawater bath rather than a brine-dosed one. The operator writes of "1.000 Quadratmeter Wasserfläche mit 1,1 Millionen Litern aufbereitetem Seewasser" and, on the same page, of bathing "bei einer Lufttemperatur von 33 °C und aufbereitetem Ostseewasser" — that is, water drawn from the Baltic and treated, not fresh water with salt added, and not thermal water: the operator claims no spring, well or mineral content. Bathers are told they can enter "in verschiedenen Becken ins 27 bis 33 °C warme Nass", so the pools are held between 27 and 33 °C, and the hall is kept at an air temperature of 33 °C. Panorama windows give onto the Lübeck Bight and the beach.

No total pool count is published; the bathing landscape is given as an enumeration. The wave pool runs "von 10 - 20 Uhr (Dienstag um 19.30 Uhr keine Welle) alle 30 Minuten" and can produce six wave patterns, from a gentle ripple to a surfing wave up to one metre high. Beside it are a Freizeit- und Erlebnisbecken where the Baltic water stays shallow, a Strömungskanal and a water slide which together are said to guarantee action "auf fast 70 Metern Länge" — the operator gives that figure for the pair, not for the slide alone — plus geysers, a waterfall, bubble and massage jets, a whirlpool and a baby area with its own sanitary room and changing facilities. Large outdoor terraces face the beach. An outdoor pool exists but is reserved for sauna guests: "Bitte beachtet, dass das Außenbecken nur über den Saunabereich erreichbar ist."

The sauna landscape is listed with four heat rooms and their temperatures: a Panoramasauna at 80 °C with a view of the Lübeck Bight and the white beach of Grömitz, a Finnische Sauna at 90 °C, a Dampfbad at 40 °C with high humidity suited to peelings, and a Lichtsauna at 60 °C with humidity of about 50 per cent. The operator lists these four but elsewhere also advertises a Biovital cabin ("diverse Saunen – finnisch, Licht und Biovital, Panorama mit Meerblick"). Around the cabins are two quiet rooms, experience showers, an ice fountain, foot baths, massage loungers, infrared chairs and the sauna-only outdoor pool, which is kept at 22 °C. Infusions and peelings run daily from 12:00 on a published rota across the Finnish sauna, the panorama sauna and the steam bath.

Opening hours are daily 08:00–21:00 with last admission at 19:30; wave operation runs 10:00–20:00 and the sauna 10:00–21:00. Catering sells drinks 11:00–20:00 and food 12:00–18:00. The bath is open all year and closes for maintenance from 18 to 22 January 2027. No opening or rebuilding year is published; the operator speaks only of "der neuen Grömitzer Welle".