Big Brother Australia 2025 premiered on Sunday 9 November 2025 at 7pm on Channel 10, with the season running through to December 2025.

Quick Scoop

  • Premiere date & time:
    • Sunday 9 November 2025, 7pm (AEDT) on Channel 10.
  • Channel & streaming:
    • Airs on Channel 10, with 24/7 live streaming available via 10 Play.
  • Ongoing schedule:
    • New episodes drop six days a week, Sunday through Friday.
    • Sundays at 7pm AEDT, Monday–Friday at 7:30pm AEDT.

What’s New In 2025

  • The 2025 reboot takes Big Brother back to its original social‑experiment style, with live nominations, public voting, and frequent evictions.
  • The house has returned to Dreamworld on the Gold Coast, and the show is being pitched as more “unfiltered” and “live” than recent game‑show style seasons.

Host, House & Vibe

  • The season is hosted by Mel Tracina, bringing a new on‑screen energy to the franchise while nodding to the early‑2000s feel.
  • Viewers and forum fans describe the 2025 run as the strongest in years, helped by the mix of housemates and the always‑on live‑stream format.

Forum & Trending Talk

  • On fan forums and Reddit, discussion has focused on the return to the Dreamworld house, the casting diversity, and the chaos of the 24/7 feed.
  • Social chatter also highlights nostalgia for the original Ten era and curiosity about whether this format will continue in future seasons.

TL;DR

  • If you’re searching “when is Big Brother Australia 2025 ,” the key detail is: it started on 9 November 2025 at 7pm on Channel 10 , with near‑daily episodes and a December finale.

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