what is the meaning of retreating monsoon

1. During the month of October November due to Apparent movement of the sun towards the South the low pressure in the Northern plain starts weakening.
2. Bhai Bhai the time there develops a high pressure in the Northern Plains thus the south West monsoon weaken and start withdrawing.
3. The retreat of the monsoon is marked by clear skies and rise in temperature by the beginning of October the monsoon withdrawal from the northern plain.