Main Characteristics of Retreating Monsoon
(i) Retreating of monsoon begins around October- november
.(ii) During this season low monsoon trough becomes weak and is replaced by high pressure belt. Thus, monsoon begins to retreat.
iii)By the beginning of October it retreats completely from Northern Plains.
(iv) This period is the period of transition from hot rainy season to cold winter season. It is marked by clear sky, humid and high temperatures. This is known as October heat.
(v) Low pressure trough shifts to the Bay of Bengal. They give rise to cyclonic depressions which cause on the eastern coasts, especially the coasts of Orissa, Andhra Pradesh and Tamil Nadu.