If you’re looking for windy bays and channels for surfers, there is Croatian top surfing destination in the nearest vicinity: beach in Viganj village, in the west of the Pelješac peninsula. Contact some of the agencies for the equipment and all other details:

Water Donkey Windsurfing and Kitesurfing Centre
Address: Ponta, Viganj 20267, Croatia
Phone Number: +385 91 152 0258
http://www.windsurfing-kitesurfing-viganj.com/

Liberan Windsurf and Kitesurf Center
Address: Viganj Ponta, Viganj 20267, Croatia
Phone Number: +385 95 854 3751
http://liberansurf.eu/

North Kiteboarding Club
Address: 20267 Kuciste-Perna, Kuciste, Croatia
Phone Number: +385 95 889 8836
http://www.northkiteboardingclub.com/spot/686/

Watersport Center Orebic
Address: Trstenica Beach, Orebic, Croatia
Phone Number: +385 98 293 657
http://morskicovik.hr/en/