A "summer internship" refers to an opportunity for students or recent graduates to work in a company or organization during the summer months. It provides a chance to gain practical experience, learn new skills, and explore a potential career field.
Many startups are quick to explore bringing in local college students for Summer internship programs. (inc.com)
Students are also given opportunities to participate in a variety of activities including paid summer internships at local employers. (rochestereducation.org)
I am currently beginning my search for summer internships in the publishing field. (thebalance.com)