As a summer tennis coach, your duties and responsibilities are to teach beginners or train more advanced tennis players during the summer months. Some summer tennis coaches work at summer camps or day camps in a metropolitan area, where they lead practice, teach skills, and keep kids busy during the day. You can also work at more intensive tennis camps. In these positions, you tend to lead older, more advanced players who are trying to make a high school or college-level team. You may organize games and tournaments as well. As a summer tennis coach, you work from June-August or whenever your students have a summer break.