Question

why there is not much temperature variations in coastal areas ?​

Answer 1

Answer:

Water has a higher heat capacity than soil and rock, so the ocean takes much longer to heat and to cool than the land. Coastal areas will generally have more moderate temperatures than inland areas because of the heat capacity of the ocean. ... On the other hand, the ocean heats up and cools down relatively slowly.

Answer 2

Answer:

because of moderate temperature in coastal areas