The charges related to an incident on an NZ Bus in the Lower Hutt suburb of Naenae in March.
The incident was caught on film by an Iraqi Muslim woman on the bus, and showed Tupaea calling out to a pair of two men.
He called them "Islam c***s" and told them to "go back to your own country".
Pene Walker, 60, who was a passenger on the bus, stood up for the young men and called out "welcome to New Zealand" to them before telling Tupaea to behave himself.
Tupaea then repeatedly told Ms Walker to "shut your mouth up b****".
During today's hearing, Tupaea was wearing an orange top with the message "Jesus coming be ready" written on the back.
Tupaea's lawyer Alastair Clarke told the court his client regretted the incident on the bus.
He said Tupaea had apologised to the men in an interview aired on Maori TV and had enrolled himself in an anger management course.
Judge Callaghan said Tupaea had a long list of nuisance-type convictions.
"I need to send a message that this type of behaviour will not be tolerated."
Outside court Tupaea would not respond to questions from reporters.