Unprecedented rainfall and floods in Hong Kong in 2023

28 Aug 2025
AFAC | Riverside Theatre
In September 2023, Hong Kong experienced an unprecedented rainfall and severe flooding, described as a "once-in-500-year" event by the Hong Kong Observatory. Triggered by the remnants of Typhoon Haikui, the extreme weather brought record-breaking rainfall, with the highest one-hour rainfall reaching 158.1 mm, the highest two-hour rainfall at 201.0 mm, and the highest 12-hour rainfall at 605.8 mm, all surpassing previous records since 1884. The intense rainfall led to widespread flooding across the entire territories, with significant disruptions to public transportation, including the inundation of the MTR stations and underground carparks, etc.  The unprecedented rainfall and floods highlighted the increasing challenges posed by climate change and the need for enhanced urban resilience and disaster preparedness in Hong Kong. In response to the unprecedented rainfall and floods in 2023, the Hong Kong Fire Services Department (HKFSD) demonstrated exceptional dedication and resilience in tackling this crisis.  Mobilizing its full force, the HKFSD swiftly deployed diving units across the most severely affected areas and ambulance personnel worked tirelessly to evacuate stranded residents, provide emergency medical care, and conduct search-and-rescue operations in flooded villages, streets and buildings. The HKFSD also utilized specialized equipment, such as inflatable rescue boats and high-capacity pumps, to navigate the inundated areas and mitigate the impact of the floods as well as to evacuate the trapped villagers. Through coordinated efforts with other government departments and community organizations, the HKFSD ensured a rapid and effective response, safeguarding lives and minimizing property damage. This operation underscored the HKFSD's unwavering commitment to public safety and its readiness to confront extreme weather challenges in the face of climate change.