Johannesburg
South Africa
Johannesburg is projected to face significant climate hazards, including frequent heatwaves and heavy precipitation events. The intense heat associated with these heatwaves is likely to increase health risks, stressing water resources and infrastructure. Concurrently, frequent heavy rainfall is expected to lead to flooding, which could damage property and disrupt transportation and services across the city. This dual threat presents pronounced vulnerabilities for residents, challenging urban planning and public health responses. The combined impact of these climate hazards complicates efforts to build resilience, underlining the importance of preparedness for the future risks associated with climate change in Johannesburg.
Hazard Outlook
How will Johannesburg's projected climate hazards compare to other cities under a 3.0°C future warming scenario?
Heavy Rainfall Days
With 16 days of heavy rainfall expected, Johannesburg ranks among the highest of all cities for extreme precipitation events.
Maximum Temperature
Johannesburg's projected maximum temperature of 9.0°C is near the median of cities globally under a 3.0°C warming scenario.
Maximum Rainfall
Johannesburg's projected maximum rainfall of 8 mm is near the median of cities globally.
Longest Heatwave
Johannesburg may experience heatwaves lasting up to 3 days, lower than most other cities.
Elevation
At 1774 m elevation, Johannesburg faces lower risk from coastal flooding and sea level rise.
Exposure Summary
Adaptation Priorities
Johannesburg faces high 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 Johannesburg.
No solutions have been documented for Johannesburg.
This is an archived snapshot of the database.
Recommended Solutions
Proven solutions from similar cities that could help diversify Johannesburg's resilience portfolio
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Smart Water Meter System with AI-Powered Consumption Analytics
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