The work presents the results of studies on meteorological and hydrological determination of water temperature in the coastal zone of the Pomeranian Bay. Different statistical methods used in the study revealed that coastal water temperature is under the influence of temperature of air masses and water temperature of inland input. The influence of water temperature of the Lower Odra River on sea temperature was stronger especially during the Odra flooding events and periods of air circulation coming from south-east to north-west directions. The influence of air temperature was increased when air circulation from north-east was noticed. As correlation coefficients received as a result of synchronous relating water temperature values at Międzyzdroje to water temperature values at Gozdowice and air temperature values at Swinoujscie were highly statistically significant it was possible to describe water temperature at the coastal zone of the Pomeranian Bay using equations of simple and multiple regression.