Santiago is 260 metres above sea level, at a latitude of 42o 52’ 41” 4 North and a longitude of 4o 51’ 15” 8 West. It is located within a transitional area, between northern and southern Galicia, which is influenced by both climates. Thus, it has inland climate characteristics towards the north and east, while the climate is milder towards the south and west due to the greater proximity of the coast.
Therefore, Santiago usually has a very wet, oceanic climate. Its location near the northern Atlantic coast means that, for most of the year, it is under the influence of the Polar Front and its associated depressions; high-pressure areas are dominant during a short period of time. Consequently, its annual mean temperature is moderate (13oC), with a minimum mean temperature in January of 8oC and a maximum mean temperature of 19oC in July.
On the other hand, abundant rainfall is one of Santiago de Compostela’s main characteristics, being due to its relief and its location facing incoming Atlantic depressions. All of this amounts to more than 1,200 mm of annual precipitation, divided between a very rainy winter, rainy intermediate seasons and a dry summer.