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heat wave

heat wave

30 3.2
A period of very hot weather that lasts several days
  • noun
  • /hiːt weɪv/
translation icon : ola de calor
  • What I did not plan was that exactly this week the South of France where I live would be on heat wave alert.
  • summer heat wave
  • temperatures during heat wave
  • extreme heat wave

But I am not complaining because last year we didn't have air conditioning and we had a heat wave and it was terrible.

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Examples

  • The European heat wave of 2003 provides a window onto a possible climate future.

    Academic text (2006)
  • We're still having a heat wave here in the UK to the point where I can't really breathe anymore.

  • We're having a real heat wave.

  • This would mean more cold air in middle and northern Europe and more heat waves in southern Europe.

  • And with the heat wave and everything, it must be about 100 degrees in here.

    Fiction book (1995)
  • There is no break in the heat wave and none forecast.

    Fiction book (1996)
  • Add to that, this heat wave, and the beaches will be packed in by noon.

  • There's no end in sight from this heat wave.

  • In Pakistan, over 1,200 people died in the heat wave there.

  • The weather forecast predicts a heat wave that will last for several days this week.

Synonyms

heatwave
vsheat wave
3 3.0

A long period of very hot weather that can harm people and crops

is the same multi-day hot weather but does not stress danger
hot spell
vsheat wave
1 3.5

A period of several days with much hotter weather than usual

is the same multi-day unusually hot weather period without extra emphasis

Antonyms

6 3.2

A short sudden time of very cold weather that is colder than usual

How Hot

heat wave
30 3.2
hot spell
1 3.5
cold spell
  • UK
1 3.5

Surface Forms

heat wave singular
heat waves plural

Morphology

heat + wave

The meaning 'a period of unusually hot weather' is directly and transparently built from 'heat' (high temperature) combined with 'wave' (a surge or period), so a B1 learner who knows both words can infer the phrase. The use of 'wave' to mean a temporary surge or period is cross-linguistically common (e.g., Spanish 'ola de calor'), reinforcing transparency.

Etymology

Heat wave brings to mind a wave of heat moving over land, like a large push of warm air rolling from place to place. That's why it means 'a period of very hot weather that lasts for several days'.