Nepal has five climatic zones, broadly corresponding to the altitudes. The tropical and subtropical zones lie below {{convert|1200|m|ft|-2}}, the temperate zone {{convert|1200|to|2400|m|ft|-2}}, the cold zone {{convert|2400|to|3600|m|ft|-2}}, the subarctic zone {{convert|3600|to|4400|m|ft|-2}}, and the Arctic zone above {{convert|4400|m|ft|-2}}. Nepal experiences five seasons: summer, monsoon, autumn, winter and spring. The Himalayas block cold winds from Central Asia in the winter and form the northern limits of the monsoon wind patterns.