And summer's lease hath all too short a date....... What is meant by summer's lease?

"Summer's lease" refers to the limited time that summer lasts. Just like a lease on a property has a set duration, summer also has a finite period before it comes to an end. This phrase is often used to convey the fleeting nature of summer and how quickly it passes by.

The term "summer's lease" refers to the ephemeral nature of summer, implying that summer is like a short-term rental or tenancy that ends too quickly. The word "lease" in this context suggests that summer is a temporary season that is not permanent. The phrase evokes a sense of longing and nostalgia for the fleeting beauty and warmth of summer.