The Venice water buses, known as Vaporetti, operate on a 24-hour schedule, though the frequency and routes change significantly between day and night. The primary daytime lines, such as Line 1 and Line 2 which travel the Grand Canal, generally begin their full service around 4:30 AM to 5:00 AM. These lines run frequently—every 10 to 20 minutes—until approximately midnight. After midnight, the "N" (Notturno) night line takes over, providing essential transport between the Piazalle Roma, the Lido, and the various islands like Murano and Burano throughout the early morning hours. In 2026, the ACTV (the local transport authority) has integrated real-time GPS tracking into their "AVM Venezia" app, allowing travelers to see exactly when the next boat is arriving at a specific "pontile" or dock. For those arriving on late-night flights or early-morning trains, the night service ensures you are never truly stranded, though the wait times can extend to 40 or 60 minutes between boats, so checking the specific night timetable is essential for a stress-free journey through the lagoon.