The Gale or Storm Signal, No. 8 will remain in force up to 4pm, the Hong Kong Observatory announced.
At 10 am, Typhoon Kompasu was centered about 390 kilometers south-southwest of Hong Kong and is forecast to move west at about 25 kilometers per hour across the northern part of the South China Sea towards the vicinity of Hainan Island.
Winds with mean speeds of 63 kilometers per hour or more are expected from the northeast quarter, said the HKO.
Rainbands associated with Kompasu continue to affect the coast of Guangdong. Gales are prevailing over parts of the territory. However, as Kompasu departs, local winds are expected to weaken gradually in the afternoon.
Heavy rain brought by Kompasu may lead to flooding in low-lying areas. Members of the public should continue to take precautions against flooding. Seas will be rough with swells. Members of the public should stay away from the shoreline and not engage in water sports.