the temperature of the water and the salinity of the water
Elevation and how close you are to the Equater
Ocean currents & the polar ice caps
The temperature and the minerals in the ocean are the two factors that affect salinity of ocean water.
There are quite a few ways in which ocean currents can affect ocean water. These currents can change temperature for example.
The things that affect climate are global winds, ocean currents, distance to water, topography, latitude, and elevation.