Taiwan lies on the Tropic of Cancer, and its general climate is marine tropical. The northern and central regions are subtropical, whereas the south is tropical and the mountainous regions are temperate. The average rainfall is  per year for the island proper; the rainy season is concurrent with the onset of the summer East Asian Monsoon in May and June. The entire island experiences hot, humid weather from June through September. Typhoons are most common in July, August and September. During the winter (November to March), the northeast experiences steady rain, while the central and southern parts of the island are mostly sunny.