Humid is used to talk about the wet weather or air that makes you feel uncomfortable. Damp is used to refer to something slightly wet in an unpleasant way. It can also refer to the air. Moist is used to refer to something slightly wet in a pleasant way. humid I can't stand this humid weather. Shanghai is very humid in summer. The humid atmosphere of the greenhouse is good for the plants.
damp It was a damp day and we could barely breathe. The little room was dark, cold and damp. Wipe the computer screen with a damp cloth.
moist She made a delicious, moist chocolate pudding. He laughed so much that his eyes were moist. The soil should be moist before planting the seeds.