Hello Etoile !
For your evenings, have you considered strolling around Arashi-yama ? The surroundings of the Togestu bridge and the Hozu river are a very nice place to spend a hot summer evening.
You might already have it but the JNTO pamphlet for Kyoto -
Kyoto Walks - is a must have for your peregrinations in the old capital and you will have all the information you need to reach Arashi-yama.
You might already know Nara but it's also a very nice place to walk around in the evening : many places are deliciously lighten and are worth the - small - train trip from Kyoto (juste check the time of the last train
). Enjoy !