Summer is weather which you don't like if it's regular..Now why to stay with regular when you have so many things to do in Summer.
First take leave and go to hill station like Summer in Manali, join some adventures camp in Manali or Shimla, you should also don't miss the chance if you can visit Laddak.
If you have kids than there are lots of summer camp for kids are happening accros India specially in delhi, Jaipur, Mumbai, Pune.
If you are not looking to take leave or not interested in kids activities, than there are also
other many interesting events and activites are taking place in almost all cities of India like
handicraft workshop, Mahandi workshop, Cricket and soccer tournaments, lots of Indoor
Games, hook2events.com helps you to catch the all action of summer activities
http://www.hook2events.com/activities