IMD has officially indicated the withdrawal in the map below as on September 28.
Monsoon normally withdraws from Goa between Obctober 1 and 15. This year is no exception and during last two weeks Goa has been experiencing isolated thunderstorms in the late afternoons and evenings, typical of withdrawing monsoon.
The day maximum temperatures are expected to be around 33-35C with lower humidity than normal due to winds blowing from the East and North.