Why local winds may reverse daily between water and coastline areas?

Answer 1

Ultimately, because oceans are huge heat sinks. The surface of a body of water both heats and cools more slowly than the surface of land.

When the sun comes up in the morning, it begins to heat the land and the water. Since the land heats more quickly, the air above it also heats more quickly, and rises. This produces a region of relative low pressure, which draws air from over the cooler water and results in a breeze blowing from the water to the land.

When the sun starts to set, the land cools more quickly, and the cooler air above it sinks, resulting in a region of relative high pressure and a breeze blowing from the land to the water.

This is a tremendous oversimplification and there are lots of other factors that make it not always work out this way, but in general it gives the idea of how this could happen.