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In Karachi, a relentless heatwave has left residents grappling with extreme temperatures, recently peaking at 44.1°C, the highest since 2018. This alarming rise in heat is part of a larger trend affecting millions across South Asia, as experts warn that the ongoing climate crisis is transforming seasonal weather patterns into a perilous new normal.
Unprecedented Heatwave in South Asia
Throughout April and May, southern Pakistan has been in the grip of an intense heatwave, which has seen temperatures soar well above the seasonal average. In Sindh, where Karachi is located, the mercury has frequently climbed to between 44°C and 46°C, prompting many to stay indoors during the sweltering afternoons. The impact is particularly severe for outdoor workers, including farmers and transport personnel, whose livelihoods are jeopardised by the extreme conditions.
India is similarly afflicted, with states such as Rajasthan, Gujarat, and Maharashtra recording temperatures exceeding 45°C. In light of these conditions, local authorities have issued heatwave alerts, recognising the increased health risks and the strain on electricity supplies, which further disrupt daily life for millions.
Karachi’s Struggle Against the Heat
Karachi, typically buffered by breezes from the Arabian Sea, has not escaped the harsh climate. The city’s temperatures have consistently exceeded 40°C throughout early May, with the Pakistan Meteorological Department (PMD) confirming the recent record of 44.1°C. Meteorologists caution that even hotter days may lie ahead, raising concerns about the wellbeing of the city’s residents.
The effects of the heat are particularly acute in coastal communities like Ibrahim Hyderi, where prolonged power outages and water shortages exacerbate the already challenging living conditions. Abdul Sattar, a seasoned fisherman, shared a harrowing account of a colleague who collapsed from heat exhaustion, underscoring the immediate dangers posed by the extreme temperatures.
Health and Safety at Risk
The community is haunted by memories of the 2015 heatwave, which claimed thousands of lives, including those of several fishermen from Ibrahim Hyderi. Recent summers have also seen heat-related fatalities, emphasising Karachi’s vulnerability to such weather extremes. Local healthcare facilities are struggling to cope with the surge in heat-related illnesses. Dr Suresh Kumar, who oversees the children’s ward at the Ibrahim Hyderi government hospital, reported a dramatic increase in patients, with daily visits rising from approximately 50 to over 200 since late April. Many of these young patients are suffering from diarrhoea, stomach infections, and dehydration, all of which are exacerbated by the extreme heat.
Experts attribute these recurrent heatwaves to a troubling long-term trend linked to climate change and urbanisation. The World Weather Attribution group has noted that human-induced climate change has significantly increased the likelihood of events like this, transforming extreme heat from an anomaly to a regular occurrence.
The Need for Urgent Action
Yasir Darya, a climate advocate, highlighted that Karachi’s high humidity can make temperatures feel considerably hotter. The city is also experiencing an increase in unusually warm nights, which disrupt sleep and negatively impact overall health. Darya emphasised the urgent need for cooling centres and improved public health infrastructure, pointing to the diminishing tree cover in the city as a contributing factor to the urban heat effect.
According to the PMD, average temperatures in the region have risen by approximately 1.4°C, with Sindh alone experiencing an increase of around 1.7°C over recent decades. The changing climate means shorter winters and increasingly severe summers, creating a dire situation for those living in vulnerable areas.
Climate specialists are calling for immediate interventions, including the establishment of public cooling centres, improved access to clean drinking water, emergency medical preparedness, and extensive urban tree planting initiatives. For the residents of Sindh, the climate crisis is not a distant threat; it is a daily reality that is reshaping their lives and turning extreme heat into a constant struggle for survival.
Why it Matters
The growing intensity of heatwaves in Karachi and across South Asia serves as a stark reminder of the urgent need to address the climate crisis. As temperatures continue to rise, the consequences for public health, economic stability, and environmental integrity become increasingly severe. Without immediate action, millions will find themselves facing a bleak future marked by extreme weather, health risks, and diminished quality of life—a reality that the world can no longer afford to ignore.
