The Late Late Show on RTÉ, hosted by Patrick Kielty, will return for its new season on Friday, September 12, 2025, at 9:35 PM on RTÉ One and the RTÉ Player. This return date is a week later than its usual early September start and marks the beginning of the new season after the summer break.

Regarding The Late Late Show on CBS (the U.S. version), the latest season of The Late Show with Stephen Colbert is currently on summer reruns, and new episodes of The Late Show will resume on Tuesday, September 2, 2025. The formerly hosted Late Late Show with James Corden ended in 2023, with no new episodes for 2025 under that title.

Hence, the relevant "Late Late Show" in 2025 depends on the region and host:

• In Ireland, The Late Late Show returns to RTÉ on September 12, 2025.
• In the U.S., new episodes of The Late Show with Stephen Colbert return September 2, 2025, but the Late Late Show as hosted by James Corden ended in 2023.

If "The Late Late Show" under discussion is the Irish program hosted by Patrick Kielty, the answer is September 12, 2025, at 9:35 PM.