For me, summer meant summer vacation, (we had two whole months), which meant lots of time for reading. Sitting outside in the garden or on a friend’s veranda or at the beach with a book in my hand enjoying life.
Now that I am working here in Japan I effectively have no summer vacation, but I have noticed that my appetite for reading has gone up considerably the last month and I am finishing books at an almost alarming rate (I am not complaining though).
Here in Japan it is mostly autumn that is closely associated with reading. They say 読書の秋 (dokusho no aki) which means something like “the autumn of reading”. They actually have this thing called 〇〇の秋 where you input a two-kanji compound word to reflect what autumn is about to you. So another popular one is 食欲の秋(shokuyoku no aki) which is “autumn appetite” as autumn vegetables are so delicious here so people spend a lot of the autumn just eating (and reading).
Anyways, for me it’s summer, so I guess it’d be 読書の夏 (dokusho no natsu) instead.