Hong Kong's Leisure and Cultural Services Department announced on August 22, 2026, that red flags had been hoisted at five beaches because of big waves. Beachgoers were advised not to swim at these beaches.

The affected beaches were Repulse Bay Beach and South Bay Beach in Southern District on Hong Kong Island; Hung Shing Yeh Beach and Pui O Beach in Islands District; and Mun Bay Beach in Sai Kung District.

The warning applied to swimming at those five beaches at the time of the announcement. The department's notice did not state when the flags might be lowered.