As a result, a low pressure area is created at ground level. The sea doesn't heat up as quickly as the land, so the air temperature over the water is much less. As a result, the cooler air is free to move sideways to occupy the new low pressure area. The result is a seabreeze, which can be from a light to strong wind; the strength of the sea breeze correlates to the difference in temperatures. Seabreezes usually happen in spring and summer, when the difference in temperature between land and sea is greatest.
What's even more amazing is that the wind can be traveling faster than the front of the seabreeze. It can be progressing inland at 25 km/h, but the actual wind can be blowing at 35 km/h! Sometimes the seabreeze can reach many kilometers inland, and other days it teases you by staying just offshore, coming in, and then going out again.
So to get a seabreeze, it needs to be hot inland. But too hot and you won't get one at all. To explain why this is the case, we need to understand high's and low's and pressure gradients, which are shown in synoptic maps.