As aug lies in monsoon period , exploring waterfalls and hillstation would be a great choice.
If you are from Mumbai/Maharashtra , visit places like Mahabaleshwar, Lonavala, Matheran. You will thank me later.
In Karnataka, places like Agumbe, Shimoga (Jog falls) etc. would be great to visit. Since they're nearby you could also combine them in a single visit. I think Dandeli offers great service during this time too.