If you’ve been following Belly’s love triangle across those sun‑soaked Cousins summers, you already know season 3 of The Summer I Turned Pretty is the big one. With 11 episodes — three more than previous seasons — the final season is stretching out the drama longer than ever. Here’s the full breakdown of the episode count, release schedule, and what it all means for the series finale.

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Total episodes in Season 3: 11 ·
Season premiere date: July 16, 2025 ·
Season finale date: September 17, 2025 ·
Based on book: We’ll Always Have Summer ·
Series status: Final season

Quick snapshot

1Confirmed facts
2What’s unclear
  • Exact plot details for individual episodes beyond the book source material
  • Whether bonus or behind‑the‑scenes content will follow the finale
3Timeline signal
4What’s next

The 11‑episode count is the headline, but the real pattern is how the show expanded its run for the finale.

Detail Value
Total episodes 11
Premiere date July 16, 2025
Finale date September 17, 2025
Streaming platform Prime Video
Based on We’ll Always Have Summer by Jenny Han
Series status Final season (no season 4)

How many episodes are in TSITP season 3?

Total episode count for season 3

  • Season 3 has 11 episodes, confirmed by multiple outlets including Decider and Cosmopolitan.
  • The season is based on the third book We’ll Always Have Summer by Jenny Han (Cosmopolitan).
  • Prime Video’s official trailer explicitly states “The Final Season” (Prime Video official trailer).

Comparison to previous seasons

  • Season 1: 8 episodes
  • Season 2: 8 episodes
  • Season 3: 11 episodes — a 37.5% increase (Decider)
What the expansion means

By adding three episodes, the showrunners gave themselves room to adapt the third book more fully without rushing the emotional beats. For fans who felt season 2’s 8‑episode arc was compressed, this longer run signals a more deliberate, complete closure.

Is episode 8 of TSITP the last episode?

Why episode 8 is not the finale

  • Episode 8 released on August 28, 2025 — it is not the season finale (People).
  • Three more episodes follow: episodes 9, 10, and 11.
  • The series finale is episode 11, which streamed on September 17, 2025 (Newsweek).

How many episodes air after episode 8

  • Episodes 9–11 were promoted as the “last three episodes” starting September 3, 2025 (Prime Video final trailer).
  • This late‑season push suggests a deliberate marketing focus on the finale arc.
Common confusion

Many viewers assume an 8‑episode season because seasons 1 and 2 had exactly that. Season 3’s expanded order changes the rhythm — episode 8 is merely the end of the middle act, not the conclusion.

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

Confirmation that season 3 is the final season

  • Creator Jenny Han has stated the series ends with season 3 (Cosmopolitan).
  • The show adapts the third and final book in the trilogy, We’ll Always Have Summer.
  • Prime Video’s marketing consistently labels it “The Final Season” (Prime Video official trailer).

Source of the information

  • Decider’s September 2025 article covering episode 11 notes there are no plans for a fourth season (Decider).
  • Rotten Tomatoes lists season 3 as the current season with no further installments scheduled (Rotten Tomatoes).
The upshot

For fans hoping for more summers in Cousins, the story is complete. The expanded episode count is the show’s way of giving the book’s ending the full screen time it deserves — no cliffhanger for a season 4.

What is the TSITP season 3 episode release schedule?

Premiere date and weekly release pattern

  • The season launched July 16, 2025 with the first two episodes (IMDb News).
  • New episodes dropped every Wednesday at 3:00 a.m. ET / 12:00 a.m. PT on Prime Video (People).
  • This weekly cadence continued for all 11 episodes.

Finale date

  • The series finale (episode 11) streamed on September 17, 2025 (Newsweek).
  • Decider confirmed episode 11 was the final scheduled episode of the 11‑episode run (Decider).

The pattern: a two‑episode premiere, then nine weeks of single episodes — no mid‑season breaks.

Timeline

  • — Season 3 premiere (episodes 1‑2)
  • — Episode 3 release
  • — Episode 4 release
  • — Episode 5 release
  • — Episode 6 release
  • — Episode 7 release
  • — Episode 8 release
  • — Episode 9 release
  • — Episode 10 release
  • — Series finale (episode 11)

What we know vs. what we don’t

Confirmed facts

  • Season 3 has 11 episodes (Decider).
  • Season 3 premiered on July 16, 2025 (Prime Video official trailer).
  • Season 3 is the final season (Cosmopolitan).
  • The season is based on We’ll Always Have Summer (Cosmopolitan).
  • Episodes release weekly on Prime Video (People).

What’s unclear

  • Exact plot details for each episode beyond the book adaptation.
  • Whether any bonus or behind‑the‑scenes content will be released after the finale.

What critics and insiders are saying

“The final season of The Summer I Turned Pretty consists of 11 episodes, making it the longest season yet.”

— Cosmopolitan (entertainment lifestyle publication)

“Season 3 of TSITP will consist of 11 episodes, an expansion from the 8‑episode seasons that came before.”

— Decider (streaming guide and news site)

For viewers planning their final trip to Cousins, the expanded episode count means more time with the characters they love — but the ending is fixed. Season 3 is the definitive conclusion, and with 11 episodes, the show has the space to deliver the emotional payoff the books provided. For anyone wondering whether to binge or savor, the weekly release schedule makes the choice clear: settle in for a full summer of goodbyes.

Related reading: JJK Season 3 Release Date · The Apothecary Diaries Anime: Season 3, Reviews & Key Facts

Additional sources

decider.com, decider.com, thesummeriturnedpretty.fandom.com, facebook.com, imdb.com

For a complete breakdown of when each episode airs, the full episode schedule provides the full release schedule.

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Frequently asked questions

How many episodes are in TSITP season 3?

Season 3 has 11 episodes, confirmed by Decider and Cosmopolitan.

Is season 3 the last season of TSITP?

Yes. Prime Video and creator Jenny Han have confirmed that season 3 is the final season. It adapts the third and last book of the trilogy (Prime Video official trailer).

When does the TSITP season 3 finale air?

The series finale (episode 11) streamed on September 17, 2025, on Prime Video (Newsweek).

How many episodes were in TSITP season 1?

Season 1 had 8 episodes, following the same structure as season 2.

How many episodes were in TSITP season 2?

Season 2 also had 8 episodes.

Where can I watch TSITP season 3?

All episodes stream exclusively on Prime Video (People).

Is TSITP season 3 based on a book?

Yes, it adapts We’ll Always Have Summer, the third novel in Jenny Han’s trilogy (Cosmopolitan).