Mixed photos from diving in Sweden. Diving in the Baltic is usually done on wrecks since there is no marine life to talk about. Visibility could stretch from sometimes poor, 0,2 m in the inner archipelago up to 15 m as best in the outer archipelago. Temperatures are mostly the same all year round below 30 m, about 3 - 5 degrees. In shallower water it could vary from 1 degree in the winter up to 15 - 20 in the summer.