Hong Kong
China
Hong Kong is projected to face climate hazards, including frequent heatwaves, heavy rainfall events, and heightened risks of arbovirus transmission and malaria. In response, the city has developed technology-enabled climate resilience solutions. These solutions focus on enhancing water management, incorporating usage metering, conservation tools, and water risk monitoring, including leak detection and evaporation protection. Moreover, current and proposed initiatives include improving disaster response logistics in the transportation sector. Together, these efforts aim to mitigate the impacts of climate hazards and foster a more resilient urban environment against the expected challenges ahead.
Hazard Outlook
How will Hong Kong's projected climate hazards compare to other cities under a 3.0°C future warming scenario?
Elevation
At 0 m elevation, Hong Kong faces very high risk from coastal flooding and sea level rise.
Maximum Rainfall
Hong Kong's projected maximum rainfall of 15 mm is among the highest of all cities globally.
Maximum Temperature
Hong Kong's projected maximum temperature of 8.8°C is near the median of cities globally under a 3.0°C warming scenario.
Longest Heatwave
Hong Kong may experience heatwaves lasting up to 4 days, near the median of other cities.
Heavy Rainfall Days
With 10 days of heavy rainfall expected, Hong Kong ranks near the median of cities for extreme precipitation events.
Exposure Summary
Adaptation Priorities
Hong Kong faces high exposure to elevation, max rain. These areas may warrant priority attention in adaptation planning.
Data source: Climate projections from the IPCC AR6 scenario analysis. See our methodology for details on how we process and interpret this data.
Deployed Solutions
Deployed climate adaptation technologies identified in Hong Kong.
Floating Solar Photovoltaic Systems on Reservoirs
The Water Supplies Department (WSD) has pioneered floating photovoltaic (FPV) technology on Hong Kong's reservoirs, beginning with two 100 kW pilot...
Smart Water Meter System with AI-Powered Consumption Analytics
The Water Supplies Department is exploring the use of Automatic Meter Reading (AMR) coupled with mobile applications to enhance consumers' awareness...
Smart Water Metering and Automatic Meter Reading System
The Water Supplies Department is promoting wider use of smart water meters and Automatic Meter Reading (AMR) System, planned to work in conjunction...
Recommended Solutions
Proven solutions from similar cities that could help diversify Hong Kong's resilience portfolio
Hydro-Meteorological Monitoring System for Flood Prediction
85%Buenos Aires deployed a comprehensive hydro-meteorological monitoring system to provide reliable and accurate information needed for planning and emergency management, risk management and flood mitigation, as well as for monitoring and protecting water resources.
Storm Alert System with Real-Time Precipitation Monitoring
85%Buenos Aires developed a Storm Alert System (SAT) as part of its Hydraulic Plan to anticipate accurately and in real time the arrival of storms, southeast blows, and different extreme climate phenomena.
Real-Time Storm Warning System with Meteorological Network
85%Buenos Aires developed a Storm Warning System (SAT) within the framework of the Hydraulic Plan to anticipate accurately and in real time the arrival of storms, southeast blows and different extreme climate phenomena.
Integrated Environmental Monitoring and Warning Platform
84%Building upon the existing Huangshi Geological Environment Information Platform Project, this approach represents a comprehensive expansion to integrate multiple environmental monitoring and warning capabilities into a unified system.
Urban Heat Island Mapping and Monitoring Platform
81%Salvador developed an online platform to map and monitor urban heat islands, supporting the city's public administration in adapting to climate change effects.
Climate Risk Atlas with Integrated Flood Mapping and Vulnerability Data
80%Mexico City's Climate Action Programme includes the development of a climate risk atlas that integrates comprehensive flood mapping and hazard data from the CDMX Risk and Hazard Atlas.
GIS-Based Groundwater Protection Zoning and Database System
84%This approach establishes a comprehensive groundwater management system for Huangshi through Geographic Information Systems (GIS) technology to address severe contamination and inadequate surveying of the city's groundwater resources.
Automated Water and Rain Monitoring System with Provincial Integration
84%The Huangshi Municipal Housing and Urban-Rural Development Bureau is constructing an automatic measuring and reporting system of water and rain that connects with the provincial flood monitoring system to realize information sharing through a special communication module.