| Season | Team | Competition | MP | G | A | Rating | ||
|---|---|---|---|---|---|---|---|---|
| 2026 | VPS | Suomen Cup | 1 | 1 | 0 | 0 | 0 | – |
| 2025 | VPS | Liiga Cup | 3 | 0 | 0 | 0 | 0 | – |
| 2024 | VPS | Liiga Cup | 1 | 0 | 0 | 0 | 0 | – |
| 2023 | VPS | Suomen Cup | 1 | 0 | 0 | 0 | 0 | – |
| 2022 | VPS | Liiga Cup | 1 | 0 | 0 | 0 | 0 | – |
| 2021 | VPS | Suomen Cup | 3 | 1 | 0 | 0 | 0 | – |
| 2020 | HJK | Suomen Cup | 3 | 0 | 0 | 0 | 0 | – |
| 2019 | HJK | Suomen Cup | 2 | 2 | 0 | 0 | 0 | – |
| 2016/2017 | VPS | Suomen Cup | 4 | 5 | 0 | 0 | 0 | – |
| 2016 | VPS | Suomen Cup | 2 | 1 | 0 | 0 | 0 | – |
| 2016 | VPS | Liiga Cup | 3 | 0 | 0 | 0 | 0 | – |
| Total | 24 | 10 | 0 | 0 | 0 | – | ||
| Date | From | To | Type | |
|---|---|---|---|---|
| - | HJK | VPS | Free agent | |
| - | Rovaniemi | HJK | Return from loan | |
| - | HJK | Rovaniemi | Loan | |
| - | Klubi 04 | HJK | Return from loan | |
| 06 Dec 2020 | HJK | Klubi 04 | Loan | |
| 01 Jan 2019 | VPS | HJK | ||
| 01 Jan 2016 | VIFK | VPS | Free agent | |
| - | VPS | VIFK | Free agent |
J. Vahtera career history shows progression across clubs and competitions, including club timeline, national team appearances and overall career totals.