Why do mountain areas in Germany receive more precipitation than many lowland areas?

Mountain areas in Germany receive more precipitation than many lowland areas primarily due to orographic precipitation. When moist, maritime air masses—typically carried by prevailing westerly winds from the Atlantic Ocean—encounter mountain ranges, the air is forced to rise. As this air ascends, it cools, leading to the formation of clouds and subsequent rainfall or snowfall, particularly on the windward, westward-facing slopes.12

In contrast, the lowland areas, such as the North German Plain, generally experience lower annual precipitation because they lack this forced uplift. Furthermore, areas located on the sheltered lee side of mountains often fall into a rain shadow, where the air has already lost much of its moisture, resulting in significantly drier conditions. Consequently, while lowland regions may receive 20 to 30 inches of precipitation annually, mountainous regions like the Alpine areas can receive upwards of 80 inches.12