The statement is - True.
The currents, depending are they warm or cold, are a very big factor in defining the temperatures of the coastal regions where they have big influence. If the currents are warmer, it also means that they are wet as well, so they are making the temperatures on the coastlines much more stable, higher, and there's much smaller variation between the day and night temperatures. The cold currents, on the other hand, are dry, make the places they influence much drier, and they influence the temperatures in the way that there's a very big difference between the day temperature and night temperature when it drops significantly, and in general it makes the temperature be smaller in most of the year.
