Taiwan enjoys an oceanic, subtropical monsoon climate. The warm and humid summer lasts from May until September, the mild winter from December until February. The average lowland temperature in January is 16° C (61° F ) in the north and 20° C (68° F ) in the south; the average July temperature is 28° C (82° F ) in both the north and south. The growing season lasts throughout the year, except at elevations above 1,200 m (4,000 ft), where frost and snow occasionally occur.
The average rainfall is 257 cm (101 in), ranging from 127 cm (50 in) at the middle of the western coast to 635 cm (250 in) and more on exposed mountain slopes. Southwest monsoon winds blow from May through September and northeast monsoon winds from October to March. Only the extreme southwest has a distinct dry season. As a result of the tropical cyclonic storms that sweep out of the western Pacific, typhoons occur between June and October.