The Definitive Guide To The Summer I Turned Pretty Season 3 Release Date: Everything You Need To Know About The Final Season

The wait is finally over for a definitive date, but fans of the beloved Cousins Beach love triangle will have to be patient a little longer. As of today, December 10, 2025, the highly-anticipated third and final season of The Summer I Turned Pretty has an official premiere date: Wednesday, July 16, 2025. This news comes after a significant delay that pushed the show out of its traditional summer slot, leaving viewers desperate for updates on Belly, Conrad, and Jeremiah’s dramatic conclusion. The season will kick off with a two-episode premiere, followed by a weekly release schedule on Prime Video.

The journey back to Cousins Beach for The Summer I Turned Pretty Season 3 has been a long one, marked by industry-wide disruptions. Adapting the final book in Jenny Han's trilogy, We'll Always Have Summer, this installment promises to deliver the ultimate resolution to the burning question: who will Belly Conklin choose? The stakes are higher than ever, and the final summer will be the one that changes everything for the Fisher and Conklin families. This comprehensive guide breaks down the confirmed release schedule, the reasons for the delay, and the major plot spoilers from the book that are set to rock the screen.

The Confirmed Release Schedule and Production Timeline

The announcement of a Summer 2025 release was made by Prime Video during their inaugural upfront presentation, confirming the show's return after a two-year gap. This long delay was primarily a result of the Writers Guild of America (WGA) and SAG-AFTRA strikes, which brought much of Hollywood production to a standstill in 2023.

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Despite the setbacks, the show's team, led by author and showrunner Jenny Han, worked tirelessly to get the final chapter ready. Filming for The Summer I Turned Pretty Season 3 officially took place in North Carolina throughout the summer of 2024. This meant the cast—including Lola Tung (Belly), Christopher Briney (Conrad), and Gavin Casalegno (Jeremiah)—were back on location to capture the quintessential summer atmosphere that fans adore. Post-production, the final stage of editing and polishing, was reported to run until June 2025, perfectly setting the stage for the mid-July premiere.

TSITP Season 3 Episode Release Schedule

Unlike the binge-model release for some streaming shows, Prime Video confirmed a mixed schedule for the final season, ensuring the drama is stretched out over two months. The season will consist of 10 episodes, an increase from the seven episodes of Season 1 and eight episodes of Season 2.

• Premiere Date: Wednesday, July 16, 2025 (Episodes 1 & 2)
• Weekly Releases: Every subsequent Wednesday (Episodes 3-9)
• Season Finale: Wednesday, September 17, 2025 (Episode 10)

The two-episode drop on the premiere date is a treat for fans who have waited so long, but the weekly release model is designed to maximize the social media buzz and keep the #TeamConrad vs. #TeamJeremiah debate alive throughout the summer.

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The Final Chapter: What to Expect from the Book's Shocking Plot

Season 3 will adapt the final novel in the trilogy, We'll Always Have Summer, which jumps forward in time and significantly raises the emotional stakes. The show has already taken some creative liberties with the source material, but the core events of the final book are expected to form the backbone of the narrative.

The third book reintroduces Belly and Jeremiah two years after the events of Season 2’s finale. Belly is now in college, and her relationship with Jeremiah is still going strong—or so it seems. The stability is shattered when a devastating revelation comes to light: Jeremiah has cheated on Belly.

In a desperate and impulsive attempt to save their relationship, Jeremiah proposes to Belly. What follows is a whirlwind of planning a wedding, a decision that deeply concerns their families and friends, including Belly’s mother Laurel and Jeremiah’s brother, Conrad Fisher.

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The tension culminates back at the place where it all began: Cousins Beach. The wedding plans bring all the characters together, forcing Belly to confront her true feelings, the lingering connection she shares with Conrad, and the reality of her relationship with Jeremiah. The book is a masterclass in emotional turmoil, featuring a heartbreaking confrontation and, ultimately, Belly's final choice.

The Love Triangle's Resolution: Team Conrad vs. Team Jeremiah

While the show has kept the love triangle perfectly balanced, the book's ending is clear. The narrative arc of We'll Always Have Summer is designed to bring Belly back to Conrad. The book culminates in Belly and Conrad finally getting back together, with an epilogue that shows their eventual wedding, fulfilling the promise of their childhood connection and the emotional depth they share.

However, showrunner Jenny Han has a history of surprising book fans. The show's writers may choose to modify certain elements, such as the timeline or the specific details of the cheating and the fake engagement, to make the on-screen drama even more compelling. Regardless, the central conflict—Belly choosing between the passionate, spontaneous love of Jeremiah and the deep, soulmate connection with Conrad—will define the final season.

Cast and Character Returns: Who is Coming Back to Cousins Beach?

The core cast is confirmed to return to finish the story of the Fisher and Conklin families. Their performances are what elevated the series from a simple YA adaptation to a global phenomenon, and their return is essential for the final emotional payoff.

• Lola Tung as Isabel "Belly" Conklin
• Christopher Briney as Conrad Fisher
• Gavin Casalegno as Jeremiah Fisher
• Sean Kaufman as Steven Conklin (Belly's brother)
• Jackie Chung as Laurel Park (Belly's mother)
• Rachel Blanchard as Susannah Fisher (though deceased, she is expected to appear in flashbacks)
• Rain Spencer as Taylor Jewel (Belly's best friend)

The supporting cast, including Miniseries Conklin and the rest of the Cousins Beach regulars, are also expected to make appearances. The focus of the final season will be heavily on the main trio, especially as they navigate the complexities of college, careers, and the ultimate commitment of marriage.

The final summer is set to be the most dramatic, heartbreaking, and ultimately satisfying chapter yet. Mark your calendars for July 16, 2025, because the resolution to the biggest love triangle on television is finally coming to Prime Video.