During the hot season, as we move from southern to northen part of the country, the average temperature increases. Starting in April, the temperature rises and slowly the maximum day temperature exceeds 37° C in northen plains of India. By mid-May, the temperature, during the day may touch 41° C to 42° C in many parts of the country, especially in the north-west plains and central India. Even the minimum temperature does not go below 20° C. The northen plain experiences dry and hot winds called 'Loo'.

Towards the end of the summer season, pre-monsoon showers ('bursting monsoon') are common in the Deccan plateau. These help in the early ripening of mangoes and other plantation crops in peninsular India. Hence, they are locally known as mango showers in Telangana and Andhra Pradesh.

The climate of India is strongly influenced by the monsoon winds. The sailors who came to India during olden days noticed the regular periodic reversal of winds. They used to sail towards the Indian coast. Arab traders named this seasonal reversal of wind system as 'monsoon'.

The monsoon forms in the tropical area approximately between 20° N and 20° S latitudes. The south-east monsoon winds from the southern hemisphere carry moisture as they flow over the Indian Ocean and towards the equitorial low pressure zones. After crossing the equator, these winds deflect towards the low pressure formed in the Indian sub-continent. The heating of land creates low pressure on the land mass of Indian Sub-continent, especially over central India and the Gangetic