Temperatures passed 50 degrees Celsius (122 Fahrenheit) in northern India as an unrelenting heatwave triggered warnings of water shortages and heatstroke.
Japan is considering adopting daylight saving time from next year.
Britain’s prolonged heatwave will impact food supplies later this year and would exacerbate any disruption caused by a hard Brexit.
Japan’s severe heatwave killed at least 15 people and sent more than 12,000 to hospital in the first two weeks of July.
An intense heatwave kills at least 14 people over a three-day long weekend in Japan with high temperatures.
A heatwave has killed 65 people in Pakistan’s southern city of Karachi over the past three days, a social welfare organisation said.