While passing east of Hong Kong, the outer rainbands of Chanchu dropped of rainfall at Sha Tin. Sustained winds in the territory reached , while gusts reached , both recorded at Tate's Cairn. Chanchu produced a storm surge of , causing minor flooding, sinking a yacht, and injuring one person who was swept into the sea. The storm downed several trees and damaged some scaffolding. Six people were injured in the territory, including three on a jetfoil bound for Macau.