Orjen is within the Mediterranean subtropical belt. While summers are hot and sunny, autumn, winter and spring are rainy seasons. It is the climate type of the Mediterranean but modifications exist in the vast region. A peculiarity of the littoral Dinarids is the precipitation regime as Orjen receives Europe's' most heavy precipitation. Like the monsoon rain is seasonally distributed, thus November thunderstorms sometimes pour 2000 l of water in several days, while August is frequently completely dry leading to forest fires. With a maximum discharge of 200 m³/s water one of the biggest karst springs, the Sopot spring, is a remarkable indicator of this seasonality. Most of the time it is inactive but after heavy rain a remarkable waterfall appears 20 m above the Bay of Kotor.