Spell of very hot weather (4,4)

I believe the answer is:

heat wave

(Other definitions for heat wave that I've seen before include "Period of unusuall hot weather" , "Period of unusually hot weather" , "Continuous spell of hot weather" , "Prolonged period of sunshine" , "Spell of very warm weather" .)

I've seen this clue in The Independent.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.