A final contingent of Victorian firefighters is preparing to head for Tasmania as the bushfire threat increases on mainland states.

About 60 interstate firefighters and a specialist New Zealand team remain in Tasmania, which earlier this month experienced its worst bushfires in 45 years.

Victorian Fire Services Commissioner Craig Lapsley said a final rotation of firefighters would travel to the island state later this week.

"It's a smaller contingent, but an important contingent for Tasmania," he said.

Mr Lapsley said fire chiefs had discussed the possibility of sending extra resources to NSW and South Australia, which are both facing very hot and dry conditions in coming days.

"We have considered our support for NSW, (but) that doesn't mean we will be sending any resources," he said.

Peter Cramer, a 61-year-old firefighter from Victoria's Gippsland region, died on Sunday while identifying possible containment lines for the Forcett bushfire east of Hobart.