When to Go
Southern Dalmatia works for half the year and sleeps for the other: most of the region shuts down through the winter. Dubrovnik is the exception; sightseeing is just as important as swimming here, so even in winter you will find many restaurants and attractions still open, plus bargain-priced accommodation and a chance to tune into the local way of life.
The best time to visit the region is the shoulder season: May through June and September through October. The days are still warm enough to swim but not too hot for sightseeing, there are many local festivals to enjoy, and the locals are more relaxed.
July and August is when everything happens at full speed; the prices are high, the hotels fully booked, the harbors are full of boats, and the small streets full of people. In Dubrovnik, everyone from backpackers to international performers in town for the Summer Festival scramble to find a room, and the prices rise accordingly. The payoff of a summer visit is that you're guaranteed hot, sunny weather and plenty of entertainment. If you plan to visit during this period, make sure to book accommodation well in advance and make dinner reservations a day or two ahead for restaurants you particularly want to visit.