The climate is quite sunny for most of the year, with sunshine hours averaging 6 hours a day in winter and seven or eight hours in summer. You find most hours of sunshine in the southern parts and a lot less in the cloudy wetter hills.
Rainfall almost everywhere is over 2,000 mm a year at low levels, although less in the south and much more in the mountains. In winter, disturbed weather with cloud and rain affects the north and east coast more than the south. The driest time of the year is autumn (October - November).
The warm and humid summer lasts from May until September, the mild winter from December until February. The average lowland temperature in January is 16C (61F) in the north and 20C (68F) in the south. The average July temperature is 28C (82F) in both north and south. In the mountains temperatures are much lower, and during winter frost and snow occasionally occur.
Typhoons visit Taiwan from June to October, more frequent in August and September. On average 3.5 typhoons hit Taiwan every year, causing heavy rains and environmental damage. Mild Typhoons bring timely rainfall for the forests and crops. Typhoons usually land in the southeastern part of Taiwan and move in a northwesterly direction.