The climate of New Delhi is a monsoon-influenced humid subtropical climate (Köppen Cwa) with high variation between summer and winter, in terms of both temperatures and rainfall. The temperature varies from 40 °C (104 °F) in summers to around 10 °C (50 °F) in winters. The area's version of a humid subtropical climate is noticeably different from many other cities with this climate classification in that it features long and very hot summers, relatively dry and cool winters, a monsoonal period, and dust storms. Summers are long, from early April to October, with the monsoon season in between. Winter starts in November and peaks in January. The annual mean temperature is around 25 °C (77 °F); monthly daily mean temperatures range from approximately 14 to 34 °C (57 to 93 °F). The average annual rainfall is 714 millimetres (28.1 in), most of which is during the monsoons in July and August.