I think the first half is a more gorgeous melancholy. I can’t say gorgeous, it just means something similar to gorgeous. But in the middle part, a tune kept repeating. I almost lost my patience after hearing it. , but the tone changed at the end and turned into "summer" again, maybe to express some relaxed and happy mood. I personally don't like the middle part very much, so I recommend you to listen to "Mother", which is also written by Joe Hisaishi. It has the same tune and the same piano accompaniment, but the difference is that the main melody becomes a cello, which sounds more interesting than the rain. It's sad, and the whole song only has the violin part in front of the rain. Overall, it sounds better than the rain.

I seem to have gone off topic