Winters are short and cool with occasional frosts; it begins somewhat sunny and dry but becomes progressively wetter and more overcast. Spring begins especially gloomy, and from April to June, each month has more than 220 mm (8.7 in) of rainfall. Summer is long and humid, with amongst the highest temperatures of any Chinese provincial capital, and with the sun shining close to 60 percent of the time in July and August, is the sunniest time of year.