Bhutan's climate varies with elevation, from subtropical in the south to temperate in the highlands and polar-type climate with year-round snow in the north. Bhutan experiences five distinct seasons: summer, monsoon, autumn, winter and spring. Western Bhutan has the heavier monsoon rains; southern Bhutan has hot humid summers and cool winters; central and eastern Bhutan are temperate and drier than the west with warm summers and cool winters.