Lake Washington boaters must slow down for Seafair, or face Coast Guard enforcement

The Coast Guard will enforce a slow-speed zone on parts of Lake Washington during the annual Seafair events from July 31 to August 3, 2025. All vessels in the regulated area must travel at 7 miles per hour or less, creating minimal wake.

This is a routine safety measure for a large public event. It temporarily restricts boat speeds to prevent accidents and manage congestion during the Seafair hydroplane races and air show. The rules apply for a few days each year, ensuring public safety on the water.