Situated just south of the Tropic of Cancer, Hong Kong's climate is humid subtropical climate (Köppen climate classification Cwa). Winter weather usually starts sunny and becomes cloudier towards February, with the occasional cold front bringing strong, cooling winds from the north. Hong Kong averages 1,948 hours of sunshine per year, while the highest and lowest ever recorded temperatures at the Hong Kong Observatory are 36.1 °C and 0.0 °C, respectively.