Vancouver is one of Canada's warmest cities in the winter. Vancouver's climate is temperate by Canadian standards and is usually classified as oceanic or marine west coast, which under the Köppen climate classification system is classified as Cfb that borders on a warm summer Mediterranean Climate Csb. While during summer months the inland temperatures are significantly higher, Vancouver has the coolest summer average high of all major Canadian metropolitan areas. The summer months are typically dry, with an average of only one in five days during July and August receiving precipitation. In contrast, precipitation falls during nearly half the days from November through March.
Vancouver is also one of the wettest Canadian cities; however, precipitation varies throughout the metropolitan area. Annual precipitation as measured at Vancouver International Airport in Richmond averages 1,189 mm (46.8 in), compared with 1,588 mm (62.5 in) in the downtown area and 2,044 mm (80.5 in) in North Vancouver. The daily maximum averages 22 °C (72 °F) in July and August, with highs rarely reaching 30 °C (86 °F).