Precipitation

The amount of water, in the form of rain, snow, or hail, that falls in a place. It is measured with a rain gauge, in liters per square meter or millimeters. Precipitation can be orographic (due to topography), convective (due to ground heating), and frontal (due to atmospheric fronts). The average annual precipitation in Spain is 650 mm, although the highest amounts (>1800 mm) occur in Galicia and the Cantabrian coast, and the lowest are recorded in the Canary Islands and the southeastern part of the Iberian Peninsula (<300 mm).