Hong Kong's Leisure and Cultural Services Department announced on September 13, 2026, that red flags had been hoisted at six beaches because of big waves, advising beachgoers not to swim at those sites.

The affected beaches were Stanley Main Beach, Shek O Beach and Big Wave Bay Beach in Southern District on Hong Kong Island; Cheung Chau Tung Wan Beach in Islands District; and Trio Beach and Silverstrand Beach in Sai Kung District.