More than a thousand schools were closed in France on Tuesday and the top floor of the Eiffel Tower was shut to tourists as a severe heatwave continued to grip Europe, triggering health alerts across the region.

In Portugal, Lisbon was forecast to reach 33 C (91 F), typical for this time of the year, though some inland areas could still see peaks of 43 C (109 F), according to the national weather agency. June temperature records were broken in two locations in Portugal on June 29.

Europe is sweltering under an intense heatwave, as temperatures soar across Spain, Portugal, France and Italy for one of the hottest summer starts ever recorded.