The advancing monsoon prevails during the months of June, July, August and September.
The features ofadvancing monsoon are
(i) It brings a total change in weather conditions.
(ii) Early in the season of advancing monsoon, the windward side of Western Ghats receives very heavy rainfall. The maximum rainfall of this season occurs in North-Eastern India.
(iii) It has wet and dry spells. The intervening dry period is called ‘Breaks’ in monsoon.
(iv) The monsoon is known for its uncertainties, and the spatial distribution of rainfall is uneven.