There is no season 4 of "The Summer I Turned Pretty." The series is based on Jenny Han's trilogy of novels, and each season corresponds to one of the three books. Season 3, which aired its finale on September 17, 2025, is the final season. Jenny Han confirmed that "three books, three seasons" feels right for the story, and there are currently no plans for a fourth season or a spinoff, although she remains open to future possibilities if the story and timing feel right.
