Paris has a typical Western European oceanic climate (Köppen climate classification: Cfb ) which is affected by the North Atlantic Current. The overall climate throughout the year is mild and moderately wet. Summer days are usually warm and pleasant with average temperatures hovering between 15 and 25 °C (59 and 77 °F), and a fair amount of sunshine. Each year, however, there are a few days where the temperature rises above 32 °C (90 °F). Some years have even witnessed long periods of harsh summer weather, such as the heat wave of 2003 when temperatures exceeded 30 °C (86 °F) for weeks, surged up to 40 °C (104 °F) on some days and seldom cooled down at night. More recently, the average temperature for July 2011 was 17.6 °C (63.7 °F), with an average minimum temperature of 12.9 °C (55.2 °F) and an average maximum temperature of 23.7 °C (74.7 °F).