Why does a sea breeze often blow in the afternoon?

Question

Why does a sea breeze often blow in the afternoon?

Answer 1

Land heats up more than water, resulting in a pressure differential.

Answer 2

A pressure gradient is required for the sea breeze to blow towards the shore and this pressure gradient depends upon the temperature gradient that is developed between the land and sea surfaces due to the unequal heating of the land and sea by the solar radiation during day time.This pressure gradient reaches the required level only in the afternoon or evening.