James will be arriving at Maurice Bishop International Airport on Thursday at 8PM, where he will likely be met by a crowd of thousands.
The 19-year-old, who has taken off the remainder of the sprinting season to focus on school, is studying business at the University of Alabama.
Grenadian officials said “a number of surprises” are in store for the newly-crowned Olympic champion.
James has become a legend at home — where he even saw the creation of Kirani James Boulevard in January coinciding with his award as the country’s sportsman of the year.
The homecoming celebration will continue Saturday, James’ 20th birthday, with a national parade concluding with a rally at the National Stadium.
The next day, a Youth Motivational Programme will be launched in James’ home fishing town of Gouyave.