What do you want to explore?
There are several main areas that tourists go to that are located on the beach(La Romana, Punta Cana, Puerto Plata, Juan Dolio, Boca Chica, etc). I personally like going to the capital for sightseeing since I like architecture and history and stay at Boca Chica for the beach and nightlife, about 30minutes from the capital. The capital doesn't have public beaches and another mainly AI resort area is Juan Dolio just a little farther than BC to the capital. The north has mountains and more diverse terrain than the south. What do you want to explore(culture, historical sites, architecture, various terrains, water activities, nightlife, etc)? What activities do you like? Be more specific and you can get more information or you can search the archives here or on a search engine. I have been in the DR at the end of May and was excellent. Anytime is a good time to go
dale7