KJD BUM Koper

KJD BUM Koper is a windsurfing club in Koper (Capodistria) on the Slovenian coast. Its website presents it as the world of board sailing, 'where freedom meets the waves'.

The club offers weekly and weekend windsurf courses for the 2026 season, a wing foil course, equipment hire and private lessons. It also organises regattas: the 2026 Slovenian open championship, announced for 30 May with the Slovenian Sailing Federation, follows the 2024 and 2025 editions in IQ Foil and funboard foil.

The site also gives wind information, a webcam and a members' area.