Orlando – You know those scorching hot days in mid-summer? Of course you do! We’ve been feeling the heat lately and have even seen heat advisories issued the last several days. These days are often referred to as the “dog days of summer.” But why “dog days?” Well, turns out it dates back to ancient times and it’s a real thing, not just a funny saying.
Back in the Roman Empire, they noticed that the hottest stretch of summer coincided with the rising of the star Sirius. Sirius is part of the constellation Canis Major, known as the “Dog Star” because it’s the brightest star in that constellation.
From early July to mid-August, Sirius rises and sets with the sun. Ancient folks thought this celestial alignment contributed to the sweltering heat of summer. The name “Sirius” itself comes from a Greek word meaning “scorching” or “glowing,” which makes sense given its association with the hottest time of year.
Even though we now understand the science behind summer heat, the term “dog days” has stuck around to describe those oppressively hot days. So next time someone mentions the dog days of summer, you’ll know it’s not just about dogs lounging around—it’s about ancient stars and summer heat.