When coastal land is warmer than the nearby water what type of breeze forms?

Along Coastlines, warmer air relates to lower air pressure, thus air flows from the higher-pressure, cooler setting into the area of lower air pressure. If the land is warmer, it has lower air pressure. Air over the sea would therefore be cooler and thus have higher atmospheric pressure, and the air will naturally from from the higher pressure (in this case, from over the ocean) to the lower pressure (over the warmer land).

So you get a wind from the water onto the land, or a sea breeze.