August is called as monsoon month of a Kasol. Though humidity is quite high, with downpours, landslides still it’s one such ideal time to visit, provided you do a weather check. Here are some spots to visit near Delhi in the month of august
Valley of flowers
Dharamshala. All these places mentioned above experience monsoons during month of august, kindly do a weather check before travelling.
Avoid mountains during monsoon season..
near Delhi you can go to rishikesh as there is less risk of land sliding and all.
other than this you can visit Rajasthan (jodhpur,bikaner or Jaipur)
one more option is madhya pradesh