Monsoon or rainy season lasts from June to September. The season is dominated by the humid southwest summer monsoon, which slowly sweeps across the country beginning in late May or early June. Monsoon rains begin to recede from North India at the beginning of October. South India typically receives more rainfall.
As such, the seasons of the year are observed in India as follows:
Winter – January to February
Spring – March to May
Summer – May to September
Autumn – October to December.