Water influences climate through:
a. the changes of the water cycle - the amount of evaporation, condensation, and precipitation as the cycle moves through day-in and day-out affects how the climate in a particular area varies from other locations.
b. The temperature of water at a given environment - because water cools and heats more slowly in bigger bodies of water compared to when its on land. The wind that is brought about to the land surface is much cooler compared to regions where there is a bigger land mass.
c. They act as a conveyer belt that counteracts the uneven distribution of solar radiation throughout a particular land.