The land breeze blows from land to sea :

• At night, the land quickly cools down, whereas sea water takes time to cool down. 
• Due to this, the air above the sea is warm, and the air above the land is cool. 
• Hence the air pressure above the sea is low, and the air pressure above the land is high. 
• Thus the wind blows from the land to sea.

Therefore, we can say that the land breeze flows from the land to the sea at night.