Meaning
To take full advantage of a favorable opportunity or good conditions while they last, since they might not come again soon.
It’s often used as encouragement to act promptly, especially when circumstances (weather, a market, someone’s mood) are unlikely to stay favorable for long.
Origin
The phrase is rooted directly in pre-industrial farming: cut grass has to dry in the sun to become hay suitable for winter storage, and if rain falls on it before it’s dry, the crop can rot or spoil, ruining a farmer’s work and winter feed supply. Because weather in much of Northern Europe is unpredictable, a spell of clear, sunny weather during haymaking season was a genuinely limited resource that had to be used immediately and could not be saved for later — making it a natural, concrete metaphor for any fleeting opportunity. The saying is recorded in English proverb collections from at least the 16th century, reflecting its origin in the shared, everyday agricultural experience of rural communities across Europe rather than in a specific literary source or historical event.
Examples
Ticket prices are low right now, so let’s make hay while the sun shines and book the trip.
The startup made hay while the sun shines during its first year of viral growth.
With the market booming, investors are making hay while the sun shines.
A: Why are you working through the weekend? B: Clients are finally responding fast, so I’m making hay while the sun shines.
Frequently asked questions
What does 'Make hay while the sun shines' mean?
To take full advantage of a favorable opportunity or good conditions while they last, since they might not come again soon.
It’s often used as encouragement to act promptly, especially when circumstances (weather, a market, someone’s mood) are unlikely to stay favorable for long.