South Dalmatia centres on Dubrovnik's UNESCO walled old town with the 2km city wall walk, the Elaphiti Islands' quieter beaches, the Pelješac Peninsula's red wines, and the island of Korčula's medieval old town.
Adriatic warming, Dubrovnik walls walkable without midday heat, and the Game of Thrones tour groups starting their seasonal runs along the Stradun.
Dubrovnik hits 30°C and cruise ships disgorge by 9am pushing wall walkers to overflow, but the Elaphiti islands a 30-minute ferry away stay quieter.
Sea at warmest, Dubrovnik Summer Festival ending mid-August aside, and the Pelješac wine harvest filling the peninsula's konobas with new Plavac Mali.
Mild Dalmatian winter at 12°C, Dubrovnik walls walkable in cool air without crowds, and Christmas markets at Stradun and Gunduliceva poljana.