Either will likely have a bit of an overlap with the rainy season: https://www.japan-guide.com/e/e2277.html

However, after the rainy season it is very hot and humid, much more so than when it starts.  So, earlier is likely nicer weather but less time to plan 🙂

Thanks for the great info – he looks perfect!  Adding him to my list 🙂

Hi again,

Sorry, called the maiko place but they had already closed.  Will try again in the morning.

Here is the link for the accessible kimonos: http://www.asusakura.jp/kimonos/english

Hi,

Most places are open Sunday, often museums/art galleries etc close on the following Monday instead.

I prefer Haneda, but it likely depends on your hotel location.