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Cities / Kolkata

Kolkata

India

Kolkata is projected to face significant climate hazards, presenting serious risks to environmental and public health. Extreme heat and dangerous heat extremes are expected to increase in frequency and severity, leading to heat-related health issues. The city will experience heavy rainfall events, which may result in severe flooding that disrupts infrastructure and daily life. Furthermore, prolonged drought conditions could jeopardize water supply and agricultural production, impacting food security. A heightened risk of arbovirus transmission is also anticipated, raising public health concerns. These projected climate impacts necessitate urgent attention for adaptation and resilience planning, as the challenges presented by climate change pose complex dangers to the city and its inhabitants.

Hazard Outlook

How will Kolkata's projected climate hazards compare to other cities under a 3.0°C future warming scenario?

Maximum Temperature

75th percentile High exposure

Kolkata's projected maximum temperature of 10.6°C is among the highest of all cities globally under a 3.0°C warming scenario.

Kolkata
5.0 Cooler → Hotter 13

Elevation

13th percentile High exposure

At 10 m elevation, Kolkata faces high risk from coastal flooding and sea level rise.

Kolkata
-8.0 Lower → Higher 4k

Longest Heatwave

55th percentile Elevated exposure

Kolkata may experience heatwaves lasting up to 5 days, higher than most other cities.

Kolkata
0.0 Shorter → Longer 92

Maximum Rainfall

69th percentile Elevated exposure

Kolkata's projected maximum rainfall of 13 mm is higher than most cities globally.

Kolkata
0.0 Lower → Higher 35

Heavy Rainfall Days

19th percentile Lower exposure

With 9 days of heavy rainfall expected, Kolkata ranks lower than most cities for extreme precipitation events.

Kolkata
0.0 Fewer → More 36

Exposure Summary

Max Temp
Elevation
Heatwave
Max Rain
Heavy Rain

Adaptation Priorities

Kolkata faces high exposure to max temp, elevation and elevated exposure to heatwave, 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 Kolkata.

No solutions have been documented for Kolkata.

This is an archived snapshot of the database.

Recommended Solutions

Proven solutions from similar cities that could help diversify Kolkata's resilience portfolio

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Geospatial Mangrove Monitoring and Hydrodynamic Modeling System
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Urban Greening and Heat Island Monitoring Dashboard
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The city dashboard initiative enables municipal authorities to access and monitor information regarding urban greening and heat island effects at both city and ward levels.
Mumbai Automated Weather Station Network for Rainfall Monitoring
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Tide Height Modeling and Storm Surge Warning System
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Mumbai Maritime Board's modelled tide height data serves as a critical input for predicting high-tide timings and issuing storm surge warnings during extreme weather events.
Community-Led Participatory Flood Risk Mapping Using Open-Source Tools
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Community-led resources mapping represents an effective and replicable model for Lagos to strengthen preparation against flood management challenges.
Visual Climate Adaptation Platform for Cyclone Risk Assessment
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Lagos State Emergency Command and Control Centre
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Lagos State has developed a comprehensive emergency management platform centered on the Lagos State Command and Control Centre (LSCCC), which has served as the central hub for coordinating emergency services including LASEMA, Lagos State Fire and Rescue Service, LASTMA, LASAMBUS, and the Rapid Response Squad since its inception in 2010.
Flood Risk Management Platform with Integrated Municipal Data
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CivicDataLab, in collaboration with the Open Contracting Partnership and Bangkok Metropolitan Administration (BMA), has developed a Flood Risk Management Platform to strengthen mitigation planning and oversight.