A Perth man who repeatedly broke out of coronavirus quarantine to visit his girlfriend is the first person in Australia to be jailed for the offence.

Today a Western Australian court sentenced Jonathan David to 6.5 months in jail for flouting quarantine restrictions.

David will serve one-month of the sentence and he was slugged with a $2000 fine.

Prosecutors described Jonathan David's actions as "selfish and extreme". (9News)

In sentencing, Magistrate Elaine Campione scolded David's brazen actions as "breathtakingly arrogant" and potentially fatal.

"You chose to roll the dice with other people's lives," she said.

"You were more than foolish, you were selfish in the extreme.

"We are in a state of emergency, these are extraordinary times and we are all required to do extraordinary things."

The concreter had flown in from Victoria on March 27 and was under a strict order to isolate for 14 days.

But the father-of-two was spotted outside his room at least five times before hotel staff notified police.

Even after officers caught him in the act, David snuck out again that night and caught a train to his partner's house in Armadale.

He was busted returning to his room the following morning.

Jonathan David said he breached coronavirus quarantine because he missed his girlfriend. (9News)

David's lawyer told the court he was originally meant to be quarantining at his girlfriend's house but they had an argument after two days and police moved him to a hotel.

He claims he eventually snuck out because he "missed" her and wanted "to get food".

Prosecutors described his actions as "selfish and extreme" - which resulted in David finishing his isolation behind bars.

Under WA's new coronavirus laws, David faced a 12-month sentence and $50,000 fine.

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