"In summer the nights. Not only when the moon shines, but on dark nights too, as the fireflies flit to and fro, and even when it rains, how beautiful it is!"
[The Pillow Book by Sei Shonagon]
https://en.wikipedia.org/wiki/The_Pillow_Book
As the Pillow Book written by Sei Shonagon says, the evening/night time is gorgeous in summer time in Japan. The fireflies are excellent, but also taking a walk on the path in between the rice fields in the cool air with the mountain breeze is also great after the summer heat in Hanawa, Miyako. That was my last Sunday evening.
Hanawa Elementary School: https://goo.gl/maps/Fz561