2019–2021 At the 2019 Australian Trials in
Brisbane, Temple qualified for his first Australian team. He won the 100 m butterfly, tying with
David Morgan in a personal best time of 51.47. At the
2019 World Championships in
Gwangju, Temple came 11th in the
200 m butterfly. He swam in the heats of the
mixed 4 × 100 m medley relay, winning a gold medal after Australia finished first in the final. In the
100 m butterfly, he finished 6th in the final in a time of 51.51. He concluded the championships with the
4 × 100 m medley relay, where he split 50.99 and finished 5th. At the
2021 Australian Trials in
Adelaide, Temple qualified for his first Olympic team, doing so with personal bests in three events. The first was the 200 m butterfly, which he won in a time of 1:55.25. He then recorded 48.32 to finish second in the 100 m freestyle. On the final day of competition, Temple went 50.45 in the 100 m butterfly. This was a new Australian record, surpassing
Andrew Lauterstein's mark of 50.85 from
2009. He finished 18th in the
200 m butterfly and did not advance to the semifinals. In the seventh finals session, Temple swam two events. First was the
100 m butterfly final, where he finished equal-5th in a time of 50.92. He concluded the night by swimming the
mixed 4 × 100 m medley relay, where Australia won the bronze medal. His final event was the
men's 4 × 100 m medley relay, where Australia finished 5th.
2022–Present At the
2022 World Championships in
Budapest, Temple competed in the
4 × 100 m freestyle relay, winning the silver medal. Swimming the
mixed 4 × 100 m medley relay, Temple won his second silver of the championships. Individually, he finished 5th in the
100 m butterfly in a time of 51.15. He later competed in the
4 × 100 m medley relay, finishing 4th. At the
2022 Short Course World Championships in
Melbourne, Temple swam the second leg of the
4 × 50 m freestyle relay. Australia won the gold medal in a time of 1:23.44. He swam the butterfly leg of the mixed medley relay, winning the silver medal. He finished 4th in the
100 m butterfly, recording a time of 50.81. His final event was the
4 × 100 m medley relay, where he won the bronze medal. In December 2023, Temple competed at the Japan Open in Tokyo. Swimming the 100 m butterfly, he went 50.25 to break his own Australian record. Days later, he swam a time trial of the short course 100 m butterfly, recording a time of 48.62. This broke the Australian record of 49.31 held by
David Morgan. At the 2024 Olympics, Temple came 7th in the 100 m butterfly with a time of 51.10. Swimming butterfly, he won the bronze medal in the
mixed 4 × 100 m medley relay. Temple qualified for the
2025 World Championships in
Singapore. There, he came 5th in the
100 m butterfly. ==World records==