Summer in China

The summer season in China is experienced differently by different provinces. The Manchurian Plain in northeast China experiences hot and dry summers, with the July temperatures averaging between 21 and 31°C (70 and 88°F). The provincial capital at Harbin, along the banks of the Sungari River has an average of 27°C (81°F) during July and August. Across northern and central China, summertime is quite hot with almost continual rainfall. The desert regions of China's northwest and western interior get hot in summer, but they are dry. The average high temperatures vary from 20 to 33°C (68 and 91°F) in July. The Turpan Depression in northwest China, which sits150 m (-492 ft) below sea level, more than deserves the title of being the 'hottest place in China' with a maximum of around 47°C (117°F).

Summertime in eastern China means not only heat, but humidity. In both the north and south most of the rain falls during summer and plenty of rain is reached in July and August. The combination of high temperature and high humidity makes for an oppressive climate. In the Yangtze River valley area, including Shanghai, summers are long, hot and humid. The Chinese have dubbed the cities of Wuhan, Chongquing, and Nanjing as "the three furnaces." Summer in Beijing is not long, despite the heat. Although the Chinese capital's average high temperature in July is 30°C (86°F), there are a few unbearably hot days when the mercury climbs to 38°C (100°F) or even more.

Summers in Tibet and Qinghai Province are comfortable, with valley temperatures only around 24°C (75 F) in July. The snow line in the north and east climbs to between 5000 m and 6000 m, and in the south it's even higher. Still, temperatures can drop dramatically in the shade and at night time.

The semi-tropical summer climate of southern and southeastern China brings a substantial amount of rainfall during the summer months. In the far south, around Guangzhou (Canton), the heat and humidity have their greatest impact from around April through September. The average high temperature in Guangzhou in July is 32°C (90°F), with days when the temperature climbs to 38°C (100°F). In Taiwan, summer average temperatures rarely surpass 32°C (89.6°F). South China Sea Islands average temperature rises to 29.5°C (85.1°F) in the month of August, which is the hottest month among China's. It includes potential for typhoons between July and September.

Reference: http://knows.jongo.com/res/article/2743