The stance was momentarily softened earlier this month but students had to be in Australia by February 5 before being allowed to on-travel to WA.
WAtoday Understands the latest change was part of an ongoing review of border controls by the state government taking place this month.
New health by the Chief Health Officer has deemed advice the cohort of international students to be manageable and a low-risk to the broader WA community.
The changes come as Curtin University implemented a vaccination mandate on its campuses for staff, students and visitors.
A statement on the university’s website said the decision was to counter the impact of COVID-19 and protect the health and safety of its community.
“The decision was made following a period of engagement with the Curtin Student Guild and our staff,” it said.
“Feedback from the guild and our staff was strongly in support of requiring vaccination as a crucial way of protecting the health, safety and wellbeing of our community.
“All staff, and all students, visitors and others who wish to attend a Curtin campus or facility, or participate in a university activity, must provide the university with evidence they have received at least one dose of a COVID-19 vaccine by 21 February and a second by March 21.”
The state government was contacted for comment.