To provide a weather strip for an automobile for preventing raindrops generated by flooding of water W such as rain water, etc. from being generated, even when the weather strip for a slide door is a main seal single body.

This weather strip 1 is mounted on at least a roof side opening part of a body B of the automobile. A fin-shaped seal lip 4 is projectingly provided in an upper part of a hollow seal part 3 of the weather strip 1. The seal lip 4 is formed to be brought into elastic contact with an upper end angular part d of an inner wall of a door D to cover the angular part d when closing the door D.