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Is red sky at night really sailor’s delight?

Just how reliable is this common weather proverb?

You may have grown up hearing the saying “red sky at night, sailor’s delight, red sky in morning, sailor’s warning” - or maybe a variation on that theme. CrowdScience listener Alison, who sees many dazzling red skies from her home in the Yukon, Canada, certainly did. And now she wonders if the saying is a sensible prediction of coming weather or just another old wives’ tale.

Alison and presenter Anand Jagatia run a little experiment, getting up at the crack of dawn and staying up until dusk for 5 days to record if the sunset and sunrise can predict their local weather.

Whilst we wait for the results, we track this weather proverb back to its ancient roots, and find out how important it, and other such proverbs, may have been to the people without satellites or even thermometers to guide them.

We also tap into the expertise of modern-day weather predictors, meteorologists. What are the atmospheric pressure systems that cause red skies, and how do they influence the weather globally? And what exceptions to the rules might turn a trusty old proverb on its head?

Release date:

27 minutes

On radio

Fri 9 May 2025 19:32GMT

Broadcasts

  • Fri 9 May 2025 19:32GMT
  • Fri 9 May 2025 22:32GMT
  • Mon 12 May 2025 01:32GMT
  • Mon 12 May 2025 04:32GMT
  • Mon 12 May 2025 08:32GMT
  • Mon 12 May 2025 12:32GMT

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