heat wave

noun

Definition of heat wavenext
as in dog days

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Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Recent Examples of heat wave In other heat news This week’s heat wave broke October records across Southern California, The Times’ Hannah Fry reports. — Blanca Begert, Los Angeles Times, 8 Oct. 2026 Large-scale warming from El Nino and a large marine heat wave off the California coast, amplified by climate change, have also affected coastal conditions and marine life since last year. — ABC News, 7 Oct. 2026 There's light at the end of the tunnel for Southern California's atypical October heat wave as temperatures will begin to drop — albeit slowly — on Wednesday and into the rest of the work week. — Austin Turner, CBS News, 7 Oct. 2026 The ongoing heat wave across the Golden State bears little resemblance to weather that reminds people of pumpkin spice and fall leaves, at least for now. — Sean MacAday, Sacbee.com, 6 Oct. 2026 See All Example Sentences for heat wave
Recent Examples of Synonyms for heat wave
heat
Noun
  • The drummer said she was distressed by the paucity of water stations available, and feared the triple-digit heat was a risk for fans.
    — Los Angeles Times, Los Angeles Times, 7 Oct. 2026
  • There’s also the heating and cooling system, wherein heat generated by the hotel’s air-conditioning units is used to produce hot water rather than being released into the atmosphere.
    — Condé Nast, Condé Nast Traveler, 6 Oct. 2026
Definition of heat

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heat-treats
heat wave
heave
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Cite this Entry

“Heat wave.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/heat%20wave. Accessed 9 Oct. 2026.

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More from Merriam-Webster on heat wave

Britannica.com: Encyclopedia article about heat wave

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