A record-breaking heatwave has tightened its grip on Italy and the Balkans, killing hundreds of people, fuelling wildfire fears, and disrupting daily life across Europe.

Authorities in Italy placed 22 cities under red heat warnings on Monday, highlighting the widespread impact of the extreme temperatures. The Vatican also experienced the heat, with pilgrims using fans and umbrellas during Pope Leo's Angelus message.

Croatia's weather service issued red alerts for several regions, including the capital, Zagreb, and the popular tourist cities of Split and Dubrovnik. Firefighters, supported by aircraft, battled a wildfire on the island of Vis, which burned through pine forests.

The implications of the persistent heat are significant, with forecasters predicting that current temperatures will remain well above average for several more days. Another surge of hot weather is expected to affect Western Europe starting around July 5 or 6.

The heatwave, which began on June 20, has already placed a substantial strain on healthcare systems, damaged infrastructure, and disrupted power generation across the continent. The World Health Organization has reported 1,300 excess deaths across Europe since June 21.

France has recorded 1,000 excess deaths linked to the intense heat, with its public health agency noting that older individuals are most at risk and anticipating further increases in fatalities. Reports from French media indicate that funeral homes in Paris and its surrounding areas have struggled to manage the influx of bodies.

While some parts of Western Europe have seen a slight reprieve after experiencing record June temperatures, the overall trend suggests a prolonged period of hot weather. The Italian Meteorological Society president noted that while extreme heat increases the risk of forest fires, localized rainstorms can mitigate this, though rainfall amounts vary.

Scientists have commented that such a severe heatwave would have been "virtually impossible" without the influence of human-caused climate change, underscoring the broader environmental context of the current crisis.