The sonnet is about the author comparing his lover to a summer’s day and showing all the faults and problems a summer’s day has. Throughout the poem there is a romantic atmosphere.
Shakespeare say his lover is more ‘lovely’ and ‘temperate’, this suggest her love is constant and never ends unlike a summer’s day; movever their love for each other is eternal. Also his lover is perfect and has no faults unlike a summer’s days indicated by ‘shake darling buds’. Then again he repeats the idea of love being everlasting and it doesnt end, portrayed in ‘too short a date’.
Then he again points out all the faults that a summer’s day has and emphasises the perfectness of his lover. As evident in ‘too hot’ and ‘dimm’d. Also he suggests that his lover’s beauty will never end or fade as evident in ‘by chance or nature’s changing’ and ‘not fade’. I think as well as talking about the beauty of his lover, he is suggesting the beauty of their relationship that shall not fade. Which again leads on to the idea of eternal love. He wont forget her like he forgets the suns setting, she is always in his mind as suggested by ‘ lose possession’
He suggests that she wont die, evident in ‘ shall death brag’. I think he is also trying to say that death shall not possess such a beauty and be able to ‘brag’ about it, maybe the writer is trying to show his ownership over the lover. Her presence and her love is ‘eternal’, in my opinion he