The 30-year-old made one appearance for Vale, in their 2-1 defeat by Carlisle in the EFL Cup first round on 9 August.
"Having moved to England from Portugal over the summer, the striker has found it difficult to adjust to life in the country," a club statement said.
The former Sporting Lisbon player will now return to Portugal.
Port Vale have terminated the contract of Portuguese striker Carlos Saleiro, just six weeks after he signed for the League One club.