Based on Trewartha’s method, India can be divided into the following climatic regions:
1. Desert climate area: This type of climate is found in the western part of Rajasthan and northern part of Gujarat.
2. Mountain climate area: This climatic area found in Jammu & Kashmir, Himachal Pradesh, eastern part of Uttarakhand, Sikkim and Arunachal Pradesh.
3. Semi – arid or Steppe climate area: South – West Punjab, Gujarat, western Madhya Pradesh, central Maharashtra and arid area of Karnataka pleateau are included in this climatic area.
4. Sub – tropical Humid climate area: This type of climate is found mostly in northen Great plains of India.
5. Tropical Sawanna climate area: This type of climate is mostly found in Western Ghats, Mizoram and Nagaland.
6. Tropical wet climate area: This type of climate is in the Western Ghats, Mizoram, Manipur and Nagaland states.
7. Tropical Sawanna (dry winter) climate area: This climate type is found mostly in plateau region of Indian Peninsula.
