If you're interested in exploring the South India I'd suggest you to visit Kerala. Munnar in Kerela is a fine place to visit during winter. The tea gardens and coffee plantations are amazing. Also the Kovalam beach and Calicut beach will offer you a subtle feel of cool environment.
Bharat our country is very beautiful.
First you decide where would you like to go.
Because country have all the things, Mountains, Sea beaches,Temples, Festivals, all types of weathers, so many varieties of food,traditions.