Honolulu
United States
Honolulu is projected to face climate challenges such as frequent heavy precipitation and elevated malaria risk. To address these hazards, the city implements technology-enabled solutions that enhance climate resilience. Current initiatives include building management systems that improve energy efficiency and demand response. Additionally, the city employs remote sensing and geospatial data through earth observation platforms for effective planning and monitoring. These current and proposed actions illustrate Honolulu’s commitment to adapting to climate impacts, improving energy sustainability, and protecting public health. The integrated approach demonstrates proactive efforts in managing climate risks while fostering resilience within the community, thereby ensuring better preparedness for future threats.
Hazard Outlook
How will Honolulu's projected climate hazards compare to other cities under a 3.0°C future warming scenario?
Elevation
At 2 m elevation, Honolulu faces very high risk from coastal flooding and sea level rise.
Heavy Rainfall Days
With 11 days of heavy rainfall expected, Honolulu ranks higher than most cities for extreme precipitation events.
Maximum Rainfall
Honolulu's projected maximum rainfall of 8 mm is near the median of cities globally.
Maximum Temperature
Honolulu's projected maximum temperature of 7.2°C is lower than most cities globally under a 3.0°C warming scenario.
Longest Heatwave
Honolulu may experience heatwaves lasting up to 4 days, lower than most other cities.
Exposure Summary
Adaptation Priorities
Honolulu faces high exposure to elevation and elevated exposure to heavy 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 Honolulu.
Recommended Solutions
Proven solutions from similar cities that could help diversify Honolulu's resilience portfolio
Solar-Powered Community Resilience Hubs with Emergency Resources
79%Resilient community centers in San Juan function as critical infrastructure equipped with renewable energy systems and emergency resources to support residents during climate disasters and grid failures.
Crowdsourced Property Condition Survey Using Street-Level Photography
77%New Orleans developed a rapid property condition survey methodology that captures street-level photography using car-mounted cameras and engages community members to evaluate each parcel through a crowdsourcing application.
Energy Intelligence Network with Real-Time Demand Response Monitoring
76%This approach leverages enhanced data collection and monitoring infrastructure to enable businesses and institutions to strategically reduce electricity consumption during peak demand periods, thereby lowering costs while strengthening grid stability.
Citizen Science Mobile Heat Mapping with Vehicle-Mounted Sensors
78%With the help of the Museum of Science, volunteers attached temperature sensors to their cars and bikes to collect data in Boston, Cambridge and Brookline.
City Resilience Index Monitoring Framework
77%The City of New Orleans piloted the City Resilience Index (CRI) to serve as a holistic framework for monitoring across sectors and scales.
Triple Bottom Line Analysis Tool for Green Infrastructure Assessment
76%The Pittsburgh Water and Sewer Authority employed Impact Infrastructure's AUTOCASE tool to conduct triple bottom line analysis that incorporated environmental and social equity factors alongside financial considerations for green infrastructure projects.
Community Resilience Hubs with Solar Power and Emergency Infrastructure
79%San Juan has established a network of community resilience hubs that transform local community centers into fortified facilities equipped with critical infrastructure and emergency services.
Off-Grid Solar EV Charging Stations with Emergency Power Backup
76%Pittsburgh deployed five portable, solar-powered electric vehicle charging stations manufactured by Envision Solar that operate independently from the electrical grid.