HII FESTIVAL across 2 Stages & Muay Thai Arena Experience a once-in-a-lifetime festival under the stars with 2 music stages dropping hip hop, drum & bass, tech house, and melodic techno, plus live professional Muay Thai fights. Hii Festival Koh Tao Monday, 28 September 2026 9:30 PM - sunrise Catch laser and fire shows, catch a free one-way taxi between 9:30 PM and 2:00 AM, and claim free entry if your birthday falls in September!