June is the sunniest month of the year with an average of about eight hours of sunshine a day. July is the warmest month with an average daytime high of 21 °C. By contrast, the average hours of sunshine are less than two per day in November and only one and a half per day from December to February. In the spring, it gets warmer again with four to six hours of sunshine per day from March to May. February is the driest month of the year. Exceptional weather conditions can bring as much as 50 cm of snow to Copenhagen in a 24-hour period during the winter months while summer temperatures have been known to rise to heights of .