Thiruvonam in 2025 falls on Friday, 5 September 2025.

Quick Scoop

  • Main festival day (Onam/Thiruvonam 2025): Friday, 5 September 2025.
  • Thiruvonam Nakshatram start: night of 4 September 2025, around 11:44 PM.
  • Thiruvonam Nakshatram end: night of 5 September 2025, around 11:38 PM.
  • This is the 10th and main day of the Onam celebrations in Kerala, marking the peak of the festival.

In simple terms: mark your calendar for Friday, 5 September 2025 as Thiruvonam day, with the auspicious star period running from late night 4th to late night 5th.

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