Hands washed under a tap in summer heat in India

A record early heatwave grips South Asia

India, Pakistan and Bangladesh were already sweltering in early May, with some places nearing 45°C before summer had properly begun.

In late April and early May, temperatures soared well above seasonal averages across India, Pakistan and Bangladesh. Some areas approached or passed 45°C.

In Pakistan, the meteorological department warned of continued heatwave conditions across Sindh and urged people to stay out of the sun and drink plenty of water. In Karachi, volunteers sprayed water on people in the street to cool them down.

unusually early and intense heatwave

Anjal Prakash, research director, Bharti Institute of Public Policy, speaking to Al Jazeera
A stray dog drinking from a street gutter in India
A stray dog drinks from a gutter in the heat in Jalandhar, India. Photo: Anurag Jamwal / Pexels

Heat and water go together

Staying hydrated is the first defence against heatstroke, but in a heatwave water is in highest demand just as supplies run low. Outdoor workers, older people and young children are most at risk.

Experts also warned that official death tolls in past heatwaves, such as in Karachi, have often been lower than the reality.

What safe water changes in a heatwave

  • Health: drinking water points protect against heatstroke.
  • Work: shade and water for people who must work outdoors.
  • Planning: cities that store water ahead of the hottest weeks.

How you can help

Share this story and check on neighbours during hot weather. Follow organisations working on heat and water in South Asia.

Source: Al Jazeera, “‘A calamity’: Why is a record heatwave sweeping South Asia?”, 8 May 2026.

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