Phrase guide

red sky at night, sailors' delight; red sky at morning, sailors take warning

proverb · 1 senses · updated from the 2026-07-25 local source snapshot

Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.

Sound

Pronunciation

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1

proverb

Meaning 1

A red sky at dusk usually indicates a high atmospheric pressure system from the west, denoting stable weather, whereas a red sky at dawn usually indicates a low atmospheric pressure system from the west, denoting unstable weather.

Definition source: English Wiktionary via Wiktextract

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

History

Etymology

A maritime phrase used for at least two millennia, likely as a shortening of Matthew 16:2b–3: "When it is evening, you say, "It will be fair weather; for the sky is red." And in the morning, "It will be stormy today, for the sky is red and threatening." You know how to interpret the appearance of the sky, but you cannot interpret the signs of the times."