The western parts of the province are the coldest with an annual mean temperature of owing to the higher elevations while the coastal areas are the warmest with an annual mean temperature of . The central parts of the province have an annual mean temperature of since they have a higher elevation than the coastal areas. During winter, the mean temperature in the coldest months ranges from in the northern parts of the province to in the southern parts. In the Andes, the mean temperature can be close to . Unlike the northern hemisphere, most of the cold air masses originate from the Pacific Ocean, which moderates the cold air and as such, extreme cold temperatures are rare. Occasionally, cold air masses from Antarctica are not moderated by the ocean, resulting in very cold temperatures. During summer, the temperature gradient is greater than in the winter. The northern parts of the province, have a mean temperature greater than in the warmest months while in the southern parts, the mean temperature in the warmest month ranges from owing to the influence of subtropical air from the north. The westernmost parts of the province are the coolest during the summer, averaging only . The central parts of the province have the most extreme temperatures which can reach over during the summer and below in the winter. The lowest temperature recorded in Chubut was in Sarmiento.