During this period Kedarnath, Badrinath, Rishikesh is the best option as these place are meant for april, may, june, july,August only. After this the situations are little difficult. You will not regret any of the options are visiting. The Kedarnath is one of the best place for peace, trek andas well as cool place during this season. The badrinath is along the way a better otion if you don't want to trek. The place are easilily accessible. For affordable room booking directly contact.
For reference :-
www.traveltonirvana.com