The phrase "cooler days" refers to a period or time when temperatures are lower than average, generally indicating more comfortable weather conditions.
Sentences with «cooler days»
I also love a turtleneck sweater and tights for cooler days ahead. (lavenueblog.com)
It's perfect for those 60 - something - degree cooler days of summer. (iadorewhatilove.com)
In our lounge you can spend cooler days in front of the fireplace. (travelground.com)