The purpose of this final paper is to explain the influence of oceanographic, meteorological and hydrological factors (salinity, temperature, wind, precipitation, river flow ...) on the coastal areas of the Adriatic. Four coastal areas in the Adriatic are analysea: the Gulf of Trieste, the Italian coastal area, the Croatian coastal area and the Albanian shelf. There is a strong influence of the Isonco River on the Gulf of Trieste, which results in a change in temperature and salinity in the Gulf. The lowest temperature measured was 3.95°C at a depth of 22 meters and a salinity of 38.15 at the same measuring station. Western Adriatic Current (WAC) along the italian coast can be divided into three streams: north, middle and south. The Croatian coast is part of the eastern Adriatic coast. Unlike the Italian (western) coast, which is undeveloped and shallow, the Croatian coast is rich in islands and capes, especially along the Dalmatian part where the water reaches depths of up to 100 meters. The greatest influence on the flow along the eastern part of the Adriatic has wind. The two most famous winds in the Adriatic are sirocco and bora. Measurements reveal that sea levels rise with the sirocco, and it goes down during bora. Oceanographic and meteorological factors - temperature, salinity, currents, wind and precipitation - were best explored in the 1980s in the area of the Kaštela Bay and Rijeka Bay, due to environmental pollution threat. The oceanographic conditions on the Albanian shelf have not yet been sufficiently investigated due to the small number of studies conducted.