A record-breaking heatwave swept across Europe and parts of South Asia in May 2026, with temperatures soaring past historical benchmarks in multiple countries, while the phenomenon, linked to climate change, disrupted daily life, led to event cancellations, and raised concerns about long-term weather patterns.

Record-Breaking Temperatures in Portugal and Spain

In Portugal. The inland town of Mora recorded a record 46.6 degrees Celsius on Sunday, surpassing the previous June record of 44.9 degrees set in 2017, the heatwave also brought unusual weather phenomena, including a rare roll cloud that swept across Portuguese beaches. While temperatures in Lisbon stabilized at 33 degrees Celsius, which is typical for the season, some inland areas could still see peaks of 43 degrees Celsius.

Spain also faced extreme conditions. Barcelona experienced its hottest June in a century, with the Fabra Observatory recording an average of 26 degrees Celsius, surpassing the previous record of 25.6 degrees set in 2003. In the southern province of Huelva. A record 46 degrees Celsius was logged on Saturday; the country’s national weather service warned that high temperatures would persist until Thursday.

England Sees Near-Record Heat

England’s May heatwave approached record levels, with the Met Office issuing yellow alerts for the North East, North West, South West, Yorkshire, and Humber regions; these alerts remained in effect until 17:00 BST on Wednesday. Scotland and Northern Ireland also recorded their highest temperatures of 2026 so far, 25.5 degrees Celsius in Charterhall and 25.8 degrees Celsius at Derrylin, County Fermanagh, respectively.

Heatwave conditions were officially met in eight parts of England on Sunday, including Heathrow, Benson, Brooms Barn, High Beech, Kew Gardens, Northolt, Santon Downham, and Writtle. The AA warned drivers against leaving vehicles unattended in the sun, with internal temperatures potentially reaching 60 degrees Celsius — In Sussex and Kent, around 500 properties faced water shortages due to high demand.

India’s Relentless Heatwave

India, too, endured an historic heatwave, with temperatures in several cities reaching as high as 47.6 degrees Celsius in Banda, Uttar Pradesh, the heatwave, which began in late April and continued into May, exposed millions to dangerous heat stress. A study by ClimaMeter found that the April 2026 heatwave occurred in an environment up to 2°C warmer than in previous decades, amplifying the intensity of the event.

Nearly 44 million people and $341 billion worth of economic activity were affected by the extreme heat conditions, as Scientists attribute the crisis to a combination of climate change, rising humidity, hotter nights, urbanisation, and dry soil. The Core Heatwave Zone (CHZ) in India, covering Rajasthan, Delhi, Uttar Pradesh, and other states, is experiencing a statistically significant rise in the frequency and duration of heatwaves.

The global heatwave pattern highlights the increasing frequency of extreme weather events linked to climate change, while As temperatures continue to rise, governments and public health officials face growing challenges in protecting vulnerable populations from the impacts of prolonged heat exposure.