Sea Breeze, or onshore breeze, is a diurnal wind from the sea that develops over land near coasts. It is formed by increasing temperature differences between the land and water which create a pressure minimum over the land due to its relative warmth and forces higher pressure, cooler air from the sea moves inland.
Source: MetEd. 2011. MetEd Education and Training pages. Accessed on 9 September 2013. Available at https://www.meted.ucar.edu