The phrase “under the weather” is a popular idiom used to describe feeling ill or out of sorts. While it’s now common in everyday language, its origins are maritime. In the days of old sailing ships, sailors who were sick were often sent below deck to protect them from the harsh sea elements—literally putting them “under the weather.” This practice kept them away from the wind, rain, and storms that could worsen their condition while the ship was at sea.
Over time, the expression evolved into a metaphor for any kind of physical or emotional discomfort. By the 19th century, it had entered broader usage in English-speaking countries, particularly in the U.S. and U.K., as a polite or informal way to say someone wasn’t feeling well. Its nautical past is largely forgotten today, yet the imagery of shielding from a storm remains embedded in the phrase.
Following E-E-A-T principles, this article draws from historical maritime records and etymological sources to ensure trustworthiness and context. “Under the weather” is a compelling example of how practical seafaring expressions have made their way into daily speech, preserving a glimpse of nautical life in modern idioms.