New episodes of "The Summer I Turned Pretty" Season 3 come out every Wednesday at 3 a.m. ET / 12 a.m. PT on Prime Video. The season premiered with the first two episodes on July 16, 2025, and subsequent episodes have been releasing weekly since then. The schedule continues with one new episode each Wednesday until the finale on September 17, 2025. For example, Episode 8 is released on August 27, 2025, at 3 a.m. ET / 12 a.m. PT.