The Met Office has already issued heat alerts for parts of England as temperatures this weekend are forecast to climb to near 37 Celsius (99 Fahrenheit).

However, this time heat wave conditions are expected to persist for at least seven days in London and some surrounding areas.

"While this heat wave may not see temperatures quite as high as last week, the duration of the heat will be much more substantial," CNN Meteorologist Taylor Ward said.

"Last week's heat was really only a one- to two-day issue. This heat wave will last at least five days across the region, with cities like Paris likely topping 36 Celsius (97 Fahrenheit) each day from Friday through Monday."

The French capital is forecast to see temperatures stay above 32 Celsius (90 Fahrenheit) every day for the next week.