Indian cities are confronting heightened risks due to significant shifts in climate patterns linked to rising global temperatures. According to a recent report by researchers, the challenges posed by climate change are no longer distant concerns but are anticipated to intensify over the next 15 years. The assessment indicates that India’s extensive 11,000-kilometre coastline is particularly vulnerable to flooding, extreme rainfall, temperature increases, and sea-level rise by the year 2040.

Among the alarming trends noted in the report are the increasing intensity and duration of heatwaves, along with an uptick in extreme rainfall events even in regions that previously experienced moderate levels. The changing climate is predicted to disrupt vital sectors such as fisheries, agriculture, and tourism.

Additional impacts include stronger cyclones forming in the Arabian Sea and Bay of Bengal, coupled with the retreat of glaciers in the Himalayas. The overall climate is entering a phase characterised by heightened unpredictability, featuring long dry spells interrupted by heavy rainfall and frequent flooding, which can devastate agriculture, infrastructure, and ecosystems.

Vulnerable Coastal Cities

The report identifies several Indian cities as particularly at risk, including Mumbai, Chennai, Kochi, Visakhapatnam, Kolkata, Surat, Mangaluru, and various urban centres along the coastlines of Odisha, Andhra Pradesh, Tamil Nadu, and Kerala. Mumbai, for instance, is expected to face a perilous combination of rising sea levels, storm surges, and extreme rainfall, which could lead to more frequent flooding in low-lying areas that already struggle during monsoons.

Similarly, Chennai and other coastal regions in Tamil Nadu are projected to encounter stronger cyclones and heavier downpours, resulting in worsening urban flood conditions. The report also highlights the likelihood of coastal erosion and increased salinity affecting freshwater sources.

On the east coast, cities like Visakhapatnam and Kakinada in Andhra Pradesh, as well as Puri and Paradip in Odisha, could likely witness enhanced cyclone intensity and storm surges. These areas, already among the most cyclone-prone in India, face growing vulnerability as ocean temperatures climb.

Implications for the Future

Cities in Kerala, including Kochi and Kozhikode, are expected to experience more intense rainfall, increased flooding, and accelerating coastal erosion. An additional concern is the rising “wet-bulb” temperatures, where high heat coupled with humidity creates hazardous conditions for human health. The Sundarbans region along the Bengal coast is particularly highlighted as one of the most susceptible areas, with rising sea levels and persistent cyclones posing significant threats to settlements, agriculture, and fragile ecosystems.

Furthermore, coastal cities in Gujarat, such as Surat, Bhavnagar, and Porbandar, are projected to see heightened heat stress, flooding, and stronger impacts from cyclones originating in the Arabian Sea. Researchers underline that the changing climate may severely disrupt coastal industries that employ millions, including fisheries, agriculture, tourism, and port operations.

The report advocates for immediate adaptation strategies to mitigate these impending challenges. Suggested measures include improved flood management systems, the development of climate-resilient infrastructure, the restoration of coastal ecosystems, and enhanced urban planning. Without proactive measures, India’s coastal cities could experience perilous conditions characterised by more severe rainfall, deeper floods, and dangerous heat by 2040.

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