Crossed by the Tropic of Cancer in the central part of its continental portion, tropical and sub-tropical Guangdong has a climate marked by high temperature and plentiful rainfall. It has the highest mean temperature of 28 degrees Celsius in July (the hottest month in a year) and 13 degrees Celsius in January (the coldest month in a year). The greater part of the province has a mean annual precipitation of about 1,500-2,000 mm. and 140-160 rainy days. The coastal regions are frequently visited by typhoons between July and August.