People jump in the Trocadero Fountain near the Eiffel Tower during a heatwave in Paris

Europe on Tuesday braced for more extreme weather as a deadly heatwave threatened fresh temperature records in Britain, with trains disrupted and hospitals across the continent preparing for an influx of heat-afflicted patients.

The latest heatwave has raised fears of the effects of climate change-supercharged extreme weather on vulnerable people, while forcing the cancellation of outdoor events, causing transport chaos and shutting schools.

It comes just a month after a previous stretch of unseasonably high temperatures scorched western Europe, with scientists warning that the increasingly frequent, lengthy and intense periods of extreme heat are a clear marker of human-driven global warming.

French Prime Minister Sebastien Lecornu was scheduled to hold a crisis meeting on Tuesday, an aide said, after forecaster Meteo France reported that the country's average temperature had broken a record for the month of June.