A boy cools off at Fontana della Barcaccia amid a heatwave in Rome, Italy, June 21, 2026. (Xinhua/Li Jing)

(260622) -- LADISPOLI, June 22, 2026 (Xinhua) -- People cool off in the sea in Ladispoli, Italy, June 21, 2026. (Photo by Alberto Lingria/Xinhua)

A woman shields herself with a parasol while walking near the Colosseum amid a heatwave in Rome, Italy, June 21, 2026. (Xinhua/Li Jing)

(260622) -- LADISPOLI, June 22, 2026 (Xinhua) -- People cool off in the sea in Ladispoli, Italy, June 21, 2026. (Photo by Alberto Lingria/Xinhua)

Tourists cool off beside an outdoor misting fan near the Colosseum amid a heatwave in Rome, Italy, June 21, 2026. (Xinhua/Li Jing)

Tourists cool off beside an outdoor misting fan near the Colosseum amid a heatwave in Rome, Italy, June 21, 2026. (Xinhua/Li Jing)

A vendor sells hats near the Colosseum amid a heatwave in Rome, Italy, June 21, 2026. (Xinhua/Li Jing)

(260622) -- LADISPOLI, June 22, 2026 (Xinhua) -- People cool off in the sea in Ladispoli, Italy, June 21, 2026. (Photo by Alberto Lingria/Xinhua)

A vendor sells iced water near the Colosseum amid a heatwave in Rome, Italy, June 21, 2026. (Xinhua/Li Jing)

People take a rest at a restaurant amid a heatwave in Rome, Italy, June 21, 2026. (Xinhua/Li Jing)

People fetch and drink water near the Colosseum amid a heatwave in Rome, Italy, June 21, 2026. (Xinhua/Li Jing)

Tourists cool off beside an outdoor misting fan near the Colosseum amid a heatwave in Rome, Italy, June 21, 2026. (Xinhua/Li Jing)

A parent helps a girl cool off at Fontana della Barcaccia amid a heatwave in Rome, Italy, June 21, 2026. (Xinhua/Li Jing)