Big Brother 2023 (U.S. season 25 on CBS) started on Wednesday, August 2, 2023 , with a special premiere at 8 p.m. ET/PT.

📰 Quick Scoop

If you were searching “when does Big Brother start 2023,” you were most likely referring to the U.S. version on CBS, which kicked off its milestone 25th season on August 2, 2023.

However, 2023 actually saw multiple “Big Brother 2023” launches around the world:

  • Big Brother 25 (USA, CBS): Premiered August 2, 2023.
  • Big Brother (UK reboot on ITV2): Launched Sunday, October 8, 2023, at 9 p.m. (UK time).
  • Big Brother Australia 2023 (Seven): Premiered Monday, November 6, 2023, at 7:30 p.m.

So the exact answer depends on which country’s version you meant, but for most people searching in English, the U.S. Season 25 date (August 2, 2023) is the key one.

Mini timeline of Big Brother 2023

  • May 2023 – CBS confirms Big Brother 25 will premiere on August 2, 2023, as part of its summer reality schedule.
  • August 2, 2023 – Season 25 premiere airs in the U.S. on CBS at 8 p.m. ET/PT, with houseguests moving in live for the summer.
  • October 8, 2023 – The UK Big Brother 2023 reboot launches on ITV2 and ITVX.
  • November 6, 2023 – Big Brother Australia 2023 begins on Seven with a new cast and format tweaks.

Forum-style note

On fan forums and discussion boards in 2023, a lot of preseason chatter focused on:

  • The later-than-usual August start for U.S. Big Brother 25 and how that might push the finale further into the fall.
  • Curiosity and hype around the UK reboot’s October launch and its shorter, six-week run.

“Big Brother starts August 2nd this year – feels weird having it start so late in the summer, but at least we get BB into October!” – typical sentiment echoed across fan communities.

TL;DR:

  • U.S. Big Brother 2023 (Season 25, CBS) started August 2, 2023.
  • UK reboot 2023 started October 8, 2023.
  • Big Brother Australia 2023 started November 6, 2023.

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