In the TV show The Summer I Turned Pretty , the main characters are all mid- teens to early twenties, and their ages change a bit by season as the story jumps forward in time.

Main character ages by season

Here’s a simple breakdown of the characters’ in‑story ages (not the actors):

Belly (Isabel Conklin)

  • Season 1: Starts at 15 and turns 16 during that summer.
  • Season 2: 17 years old.
  • Season 3: 21 years old, near the end of college.

Conrad Fisher

  • Season 1: About 17–18, oldest of the group and about to go to college.
  • Season 2: 19 years old, a college freshman.
  • Season 3: 23 years old, post–time jump, roughly college‑graduate age.

Jeremiah Fisher

  • Season 1: Around 16–17, basically Belly’s age and a year younger than Conrad.
  • Season 2: 18 years old.
  • Season 3: 22 years old, meant to be finishing college.

Steven Conklin

  • Season 1: About 17, a year older than Belly.
  • Season 2: 18 and just graduating high school.
  • Season 3: Early 20s (roughly 22) after the four‑year time jump, though his exact age is less emphasized.

Taylor Jewel

  • Season 1: Same age as Belly, about 16.
  • Season 2: 17 years old.
  • Season 3: 21 years old, still in college.

Quick HTML table (show ages in the show)

html

<table>
  <thead>
    <tr>
      <th>Character</th>
      <th>Season 1 age</th>
      <th>Season 2 age</th>
      <th>Season 3 age</th>
    </tr>
  </thead>
  <tbody>
    <tr>
      <td>Belly (Isabel Conklin)</td>
      <td>15–16[web:1][web:3][web:5][web:9]</td>
      <td>17[web:1][web:3][web:9]</td>
      <td>21[web:1][web:3][web:9]</td>
    </tr>
    <tr>
      <td>Conrad Fisher</td>
      <td>17–18[web:1][web:3][web:5][web:7][web:9]</td>
      <td>19[web:1][web:3][web:5][web:7]</td>
      <td>23[web:1][web:3][web:9]</td>
    </tr>
    <tr>
      <td>Jeremiah Fisher</td>
      <td>16–17[web:3][web:5][web:7][web:9]</td>
      <td>18[web:3][web:5][web:7][web:9]</td>
      <td>22[web:3][web:9]</td>
    </tr>
    <tr>
      <td>Steven Conklin</td>
      <td>17[web:5][web:7]</td>
      <td>18[web:5][web:7]</td>
      <td>~22 (implied after time jump)[web:3][web:9]</td>
    </tr>
    <tr>
      <td>Taylor Jewel</td>
      <td>16[web:5][web:7][web:9]</td>
      <td>17[web:3][web:7][web:9]</td>
      <td>21[web:3][web:9]</td>
    </tr>
  </tbody>
</table>

Little context and “latest buzz”

  • Fans on forums often talk about how the actors look older than their teen characters, especially Conrad and Jeremiah in college scenes.
  • With season 3 aging them into their early 20s, a lot of discussion has shifted to how the show now feels more like a college/young‑adult drama than a pure teen summer romance.

Many forum threads debate whether the early age gaps (like a college freshman with a 16‑year‑old) feel realistic or uncomfortable, but most agree the time jump into their 20s evens things out.

TL;DR: Belly, Jeremiah, Taylor, and Steven start mid‑teens, Conrad is a bit older, and by season 3 they’re all in their early 20s navigating college and early‑adult life.

Information gathered from public forums or data available on the internet and portrayed here.