The HSBC Rain Vortex at Jewel Changi Airport, the world's tallest indoor waterfall, typically "turns on" at 11:00 AM on weekdays (Monday to Thursday) and at 10:00 AM on weekends (Friday to Sunday) and Public Holidays. The waterfall continues to flow until 10:00 PM daily. In 2026, the experience is enhanced by the nightly Light & Sound Show, which takes place at 8:00 PM and 9:00 PM (with an extra 10:00 PM show on weekends). If you arrive at the airport earlier than 10:00 AM, you can still view the massive 40-meter glass funnel and the surrounding Shiseido Forest Valley, but the water will not be cascading. For a different experience, you can also check out "The Wonderfall" in the Terminal 2 departure hall, which is a 14-meter tall digital LED waterfall that runs 24 hours a day, providing a calming spectacle for travelers even during late-night or early-morning transits.