Mr Suri added: “Along with hot weather by day, it will stay warm and humid overnight with temperatures remaining in the high teens and low 20s Celsius.”
There are concerns Friday’s heat could break all records previously recorded.
The current hottest August day on record is 38.5C, reached in Faversham on August 10, 2003.
The current record maximum temperature for the UK is 38.7C, reached in Cambridge Botanic Garden on July 25, 2019.
As a precaution, the Met Office has issued a heat health alert for parts of England.