'The Summer I Turned Pretty' Season 3: All About the Final Season of the Romantic Drama — and If It Will Follow the Book's Ending (2025)

The Summer I Turned Pretty cast is returning to Cousins Beach for one last time.

In March 2025, when they released the season's first look photos, Prime Video also announced that the hit drama based on Jenny Han's trilogy series will conclude with its long-awaited third season in July. The author told Entertainment Weekly that fans should expect surprises — even if they think they know how the story will end.

The series follows an ongoing love triangle between Belly (Lola Tung) and brothers Conrad (Christopher Briney) and Jeremiah (Gavin Casalegno), whose families vacation together every summer in Cousins Beach, Mass. At the end of season 2, Belly chose Jeremiah over his older brother.

"There's so many amazing scenes for Belly and Jeremiah this season,somany," Han told Entertainment Weekly.

But don't count Conrad out just yet. Though Han revealed that he had been "away from everyone" for a while, he's still very much a part of season 3. "People will see the ways that he's changed and he's seeing the ways that Belly and Jeremiah — and Steven [Sean Kaufman] — have changed as well," the author said.

Ahead, here’s everything we know about the third and final season of The Summer I Turned Pretty.

Warning:The Summer I Turned Pretty spoilers ahead!

Who is in the cast of The Summer I Turned Pretty season 3?

The main cast will return for season 3, including Lola Tung as Belly, Christopher Briney as Conrad, Gavin Casalegno as Jeremiah, Sean Kaufman as Steven, Rain Spencer as Taylor and Jackie Chung as Laurel.

In June 2024, Kyra Sedgwick, who played Aunt Julia, shared that she is not returning for the show's third season.

What will The Summer I Turned Pretty season 3 be about?

The Summer I Turned Pretty season 3 is based on Han’s third and final novel in the franchise, We'll Always Have Summer. The book takes place two years after the events of It’s Not Summer Without You as Belly once again finds herself questioning where her heart lies between the Fisher brothers. Only in the third book, she finally makes a decision.

Though season 2 strays from the books in various ways, when PEOPLE spoke with the cast in June 2023, they all reiterated that a third season would likely follow the third book as much as possible.

"I know Jenny is really just strong on staying as true to the books as possible and hitting the main points," Casalegno told PEOPLE. Meanwhile, Tung added, "There's so many different ways you could go about it. There's a blueprint of a book, which we've been lucky to have for two seasons now, just such a solid blueprint for us, and to have Jenny on set with us has been incredible."

In her March 2025 interview with Entertainment Weekly, Han teased that the third season will honor the book's two-year time jump and have some "surprises." Though she didn't reveal much about the plot, Tung did say that she admired how the author would never "do anything that doesn't make sense for the story."

How many episodes will The Summer I Turned Pretty season 3 have?

Though Han previously revealed that the upcoming season will have a total of 10 episodes, Prime Video has since upped the count to 11, which is three more than the previous seasons.

When did The Summer I Turned Pretty season 3 start filming?

An industry source previously told PEOPLE that the show was "eyeing" to begin filming season 3 in Wilmington, N.C., in the spring — though "nothing firm" had been set by the studio yet. (Prime Video did not respond to PEOPLE’s request for comment.)

In May 2024, Prime Video confirmed that production was underway as they shared a clip of the cast, including Tung, Briney, Casalegno, Kaufman and Spencer, hanging out on the beach.

Filming also took place in Paris in October 2024 when fans shared footage on TikTok that showed Tung and Casalegno filming together.

When will The Summer I Turned Pretty season 3 be released?

As Prime Video announced that filming had begun for the new season in May 2024, they also announced when the show would return. In a video featuring the cast hanging out on the beach, Tung told the camera, "See you [in] Summer 2025!"

Nearly a year later, another update came in March 2025. In an Instagram post shared by Prime Video, the streaming service revealed that fans can dive into the new episodes in July.

"Summer is just a season away. The Summer I Turned Pretty Season 3 premieres this July on Prime Video," read the caption.

Will there be a season 4 of The Summer I Turned Pretty?

Seeing that the series is based on a trilogy of books, fans have wondered if the show will follow suit with only three seasons. Han confirmed with Entertainment Weekly that the July 2025 installment would conclude the series.

"Three books, three seasons," said the author, who also serves as showrunner with Sarah Kucserka. "It feels right to me."

Will there be a Summer I Turned Pretty spinoff?

Amazon execs teased in September 2023 that there could be a spinoff series in the works. While talking withDeadline, Vernon Sanders, head of television at Amazon and MGM Studios, teased that Amazon was "already hard at work developing complementary pieces.”

When pressed for more information, Sanders replied, "I will say stay tuned, but Jenny’s got some exciting surprises. So we’re thrilled about a season 3, and she’s got a vision for more."