Westley has been named in the Twenty20 squad for the trip after an impressive season for Essex, but he insists that he will not be content to just be involved in the short tour.
"Obviously I'm very pleased. It's been a good couple of years and this is what I've been working towards," the 26-year-old told BBC Essex.
"It's nice to be recognised but the next step is to get into the final XI and to and put in big performances."
Westley scored 384 runs in the T20 Blast this year.