Vigo's climate is usually classified as oceanic (Köppen climate classification Cfb); however, the summers tend to be warmer (and drier) and the winters milder than most areas of similar classification. In actuality, with its noticeable drying trend in the summer, Vigo's climate is more similar to the variant of the oceanic climate commonly seen in the Pacific Northwest region of North America; though with noticeably warmer winters. Substantial rainfall throughout the year prevents it from being classified as a Mediterranean climate, even though there is a drying trend in summer. The average annual temperature in Vigo is 15 °C (59 °F). Compared many other Galician towns, Vigo experiences warmer summer temperatures and milder winters. This is due to its sheltered location, surrounded by mountains inland and the Illas Cíes out in the bay towards the sea
