The Summer I Turned Pretty Season 3: Full Release Schedule, Finale Date, And Biggest Book Changes Explained

The wait is finally over, and the final summer at Cousin's Beach has concluded. As of today, December 18, 2025, fans of The Summer I Turned Pretty (TSITP) have the full, definitive answer to the most-asked question: "When did Season 3 come out?" The third and final season, based on Jenny Han’s book *We’ll Always Have Summer*, officially premiered on Prime Video earlier this year, delivering the highly anticipated conclusion to Belly Conklin's decade-long love story.

The final season brought 11 episodes of high-stakes drama, heartbreaking choices, and the ultimate resolution of the Belly-Conrad-Jeremiah love triangle. If you are just starting your binge or looking to relive the emotional journey, here is everything you need to know about the official release schedule, cast, and the major plot shifts that defined the conclusion of this beloved YA romance series.

The Definitive TSITP Season 3 Release Schedule and Series Finale Date

The third season of The Summer I Turned Pretty—which was confirmed to be the final installment of the series—followed a slightly different release pattern than its predecessors. Instead of a massive drop or a single weekly episode, Prime Video launched the season with a double-episode premiere to kick off Belly's final journey.

• The Unseen Story Jessica Simpsons Battle For Privacy And Body Image In A Digital Age Mlvqa

Official Season 3 Episode Release Schedule

The series, which adapts the final book in the trilogy, *We'll Always Have Summer*, premiered in the heart of the summer, mirroring the setting of the show. The full 11-episode run concluded in mid-September, bringing the emotional journey to a close.

• Wednesday, July 16, 2025: Episodes 1 & 2 (Two-Episode Premiere)
• Wednesday, July 23, 2025: Episode 3
• Wednesday, July 30, 2025: Episode 4
• Wednesday, August 6, 2025: Episode 5
• Wednesday, August 13, 2025: Episode 6
• Wednesday, August 20, 2025: Episode 7
• Wednesday, August 27, 2025: Episode 8
• Wednesday, September 3, 2025: Episode 9
• Wednesday, September 10, 2025: Episode 10
• Wednesday, September 17, 2025: Episode 11 (The Series Finale)

The decision to release the final season weekly after the premiere ensured that fans experienced the drama and anticipation of the love triangle's resolution together, making the series finale a massive cultural moment for the show’s dedicated fanbase. The finale, which dropped on September 17, 2025, provided the ultimate answer to whether Belly chose Conrad Fisher or Jeremiah Fisher.

The Final Chapter: Cast, Plot, and the 'We'll Always Have Summer' Adaptation

Season 3 was the series’ longest, featuring 11 episodes compared to the seven and eight episodes of Seasons 1 and 2, respectively. This expanded run was necessary to cover the time jumps and significant life events detailed in the final novel, *We'll Always Have Summer*.

• 5 Shocking Facts About Anna Congdon Penn State Sweetheart To Nfl Fiances Social Media Firestorm Cc90e

The Main Cast and Key Characters

The core cast returned to reprise their roles for the final season, ensuring the emotional continuity of the story. The central trio was back, along with all the key supporting players who have come to define the world of Cousin's Beach.

• Lola Tung as Isabel "Belly" Conklin
• Christopher Briney as Conrad Fisher
• Gavin Casalegno as Jeremiah Fisher
• Sean Kaufman as Steven Conklin
• Rain Spencer as Taylor Jewel
• Jackie Chung as Laurel Park
• Rachel Blanchard as Susannah Fisher (in flashbacks)
• Alfredo Narciso as Adam Fisher
• Kyra Sedgwick as Julia (returning)
• Elsie Fisher as Skye (returning)

A notable new addition to the cast was Sofia Bryant as Anika, who plays Belly's college roommate at Finch, a crucial setting for the season's early events.

Major Book Changes and Plot Points in Season 3

Showrunner Jenny Han and the writing team took creative liberties with the source material, a pattern established in the first two seasons. Season 3 was no exception, introducing several significant deviations from the *We'll Always Have Summer* book to enhance the drama and give more depth to the supporting characters.

• The Surprise Vegas Wedding And Shared Grief 5 Shocking Details Of John Schneider And Dee Dee Sorvinos Whirlwind Romance Ohirf

The season kicks off with Belly moving to Finch University for her freshman year of college. The core conflict quickly revolves around the love triangle, which is reignited after a significant time jump. The central plot point from the book—a major event involving the Fisher family's house in Cousin's Beach—remains, forcing Belly, Conrad, and Jeremiah to confront their past and their feelings for each other.

Key Plot Deviations and Expansions:

• Conrad's Therapy Journey: The show delves deeper into Conrad's mental health and his decision to pursue therapy, providing more context to his emotional struggles and his relationship with Belly.
• Steven and Taylor's Complicated Romance: The series dedicated more screen time to Steven Conklin and Taylor Jewel, expanding their on-again, off-again relationship beyond the book's scope. Their dynamic offered a compelling secondary romance story.
• Laurel's Personal Life: Laurel Park's career and personal journey, including her relationships with her publisher and her family, continued to be a significant focus, showcasing her coming-of-age story alongside Belly’s.
• The Belly-Jeremiah Engagement: The impulsive decision by Belly and Jeremiah to get engaged, a pivotal moment from the book, was a major storyline. The show explored the fallout and the reactions of their families, particularly Laurel and Adam Fisher, with greater detail and emotional weight.
• The Final Resolution: While the core ending—Belly’s ultimate choice—is maintained, the show provided a more detailed and drawn-out path to the resolution, including new scenes and conversations that were not present in the original epilogue of the book.

Why The Summer I Turned Pretty Season 3 Was the Ultimate Binge

The final season of The Summer I Turned Pretty solidified its place as a cornerstone of the modern YA romance novels adaptation genre. The show, helmed by Jenny Han, successfully blended the nostalgic charm of a coming-of-age story with the intense emotional stakes of a classic love triangle.

Season 3 was not just about which brother Belly chose; it was about the characters growing up, making difficult, adult decisions, and finding their own paths outside the confines of their perfect Cousin's Beach summers. The performances by Lola Tung, Christopher Briney, and Gavin Casalegno were consistently praised for their emotional depth, making the final choice feel earned, regardless of which team (Team Conrad or Team Jeremiah) you were on.

If you missed the weekly drop, the entire 11-episode season is now available to stream on Prime Video, offering the perfect opportunity for a full, uninterrupted binge. Whether you are revisiting the series or watching the conclusion for the first time, Season 3 delivers a fitting, emotional, and definitive end to the beloved TSITP story.