India is a country with a huge geographical area. So, there is uneven distribution of rainfall. 

On the basis of rainfall zones in India, the distribution of rainfall in India is classified as given below:

1. Areas of extreme rainfall (average rainfall more than 2000 mm) 

2. Areas of heavy rainfall (average rainfall from 1000 mm to 2000 mm) 

3. Areas of normal rainfall (average rainfall from 250 mm to 1000 mm) 

4. Areas of low rainfall (average rainfall less than 250 mm)

1. The areas of extreme rainfall: The western part of Western Ghats, Sikkim, Arunachal Pradesh, Meghalaya, Mizoram etc. are the prominent zones of extreme rainfall in India.

2. Areas of heavy rainfall: Bihar, Assam, Manipur, Nagaland, Tripura, West Bengal, Jharkhand, Madhya Pradesh, Chhattisgarh, Orissa, and Uttar Pradesh are included in the areas of heavy rainfall.

3. Areas of Normal rainfall: Southern part of Jammu – Kashmir, Himachal Pradesh, Punjab, Haryana, most parts of Rajashtan, Karnataka, Maharashtra, Tamil Nadu, Telangana, Andhra Pradesh and Gujarat are included in the areas of normal rainfall.

4. Areas of low rainfall: Western part of Rajasthan, northern part of Jammu – Kashmir, arid Plateau part of Karnataka are included in the areas of low rainfall.