Lastovo possesses all the basic characteristics of the Mediterranean climate, dominated by mild, moist winters and warm, long, and dry summers. The island receives around 2,700 sun hours per year, ranking it among one of the sunniest in the Adriatic and pleasant for tourists This produces a water temperature around 27 �C (81 �F) in summer.[citation needed] Annual rainfall is 622 millimetres (24.5 in). Since there are no permanent surface water streams, residents rely on bores, dams and wells
