Getting to Dubrovnik, Croatia from Podgorica, Montenegro
There is a direct bus to Dubrovnik every day but it leaves very early, something like at six in the morning. It takes about 4-5 hours. Another option is to go as far as Hercig Novi in Montenegro, then change buses for Dubrovnik in the afternoon. This way you can sleep longer and see more of the coast in Montenegro. Two popular cities in Montenegro which are right on the bus route to Dubrovnik are Budva and Kotor.
In the summer season there may be more connections.