Have you ever seen an episode of a teen drama and asked yourself how old the actors actually are?
It is a general curiosity, particularly in instances where a character feels relatable and familiar, yet the actor in the role may be well beyond his or her on-screen age.
One such actor is Gavin Casalegno, who stars as Jeremiah Fisher in the hit show The Summer I Turned Pretty, and has fans wondering, “What is his age, anyway?”
His acting is so raw with the emotion of adolescence that one could almost forget that he has been around for a long time. In this article, we examine more closely what the real age of Gavin is as we follow the steps of his career, not only as a child actor, but as a breakthrough star.
Age & Career Timeline of the Jeremiah Fisher Star
First of all, let’s begin by answering the most asked question: How old is Gavin Casalegno in real life?
1. Gavin Casalegno’s Real Age and Birth Details
Gavin Casalegno was born on September 2, 1999, so as of July 2025, Gavin is 25 years old. Gavin looks young for his age, and fans either think he looks like he is in his late teens or, similarly, in character when playing emotionally vulnerable characters like Jeremiah Fisher.
But behind the on-screen charisma is more than ten years of experience in the field. The disparity between his true age and the age of the characters he portrays has added depth and maturity to the work he does.
This background preludes the discussion on how his work has evolved throughout his years and how he has arrived at this pivotal point in his career.
2. Young Shem in Noah (2014)
Gavin’s first major film role was playing Young Shem in Darren Aronofsky’s Noah (2014), when he was just 14 years old. He starred with big names Russell Crowe and Jennifer Connelly.
Though short, the experience was his first on a Hollywood set and introduced him to the discipline and concentration of working on a professional movie. It taught him to be confident when on camera later and planted the seeds for a future career in both film and television.
3. Young Damon Salvatore in The Vampire Diaries (2015)
At the age of 15, Gavin played Young Damon Salvatore on a 2015 flashback episode of The Vampire Diaries. His appearance was brief but electric and allowed him to perform the origin story of a fan favorite.
Playing the younger version of Ian Somerhalder’s character was a delicate task, and Gavin accomplished the feat with presence and understatement on stage. This was unusual enough for a teenager, demonstrating his range to handle dramatic work.
This project was unveiled to him by more television viewers and contributed to his CV with familiar titles.
4. Jeremiah Fisher in The Summer I Turned Pretty (2022)
When The Summer I Turned Pretty debuted in June 2022, Gavin was 22 years old, while character Jeremiah Fisher was 17 years old. In spite of the five-year age difference, the presence and emotional complexity of Gavin himself made the acting absolutely convincing.
His performance as Jeremiah, a charming but troubled teen, was among the show’s greatest draws. Fans loved his on-screen relationships and how he made the character’s intricate emotional depth a reality.
The role was a huge turning point for Gavin’s career and brought him to an international streaming platform. His work on the series cemented him as a leading actor who could handle character-driven narratives.
5. Career Expansion and Future Projects
Now 25 years old, Gavin continues to develop as an actor as he re-plays his character in The Summer I Turned Pretty Season 3. Released in July 2025, no wonder that his character remains very much an integral part of the central storyline.
Additionally, Gavin has also ventured into new avenues. He’s going to play Young Joe Burke in the biopic wrestling film Queen of the Ring, a film which was filmed when he was 24 to 25 years old.
His profession of choice suggests that he may desire to grow and develop as an actor. Transitioning from teen drama to adult roles is a natural growth, and he seems poised to take the next step.
Conclusion
It’s easy to forget an actor’s actual age when they convincingly play younger characters so many times in a row. Gavin Casalegno has worked hard not just to act like or portray younger characters like Jeremiah Fisher but to do so authentically and from an emotional place, even when he is much older than the character he plays.
From his film work at 14 to complex emotional arcs at 15, Gavin has been a steady work in progress. At 22, he broke out playing a teenage character. Gavin has travelled several arcs and has some versatility. Now at 25, he is taking advantage of new opportunities, and he certainly still resonates with younger viewers as well as everyone else.
He may surprise you with his actual age, as many people do; however, his talent and career trajectory are exactly where it is supposed to be.
