The Australian government says the additional assistance will enable NGOs and the government of Vanuatu to extend access to basic services, including education and healthcare.
It says it will allow displaced people to resume more normal lives following their evacuation to the nearby islands of Espiritu Santo, Maewo and Pentecost and upon their return to Ambae Island.
Australia's total contribution to the relief effort so far is valued at about $US2.4 million, including funding for emergency food, water, shelter and hygiene supplies, aerial surveillance and evacuations.
The Australian Defence Force's 'Operation Vanuatu Assist' concluded with the departure of HMAS Choules from Vanuatu on Wednesday last week.
It delivered food, tents and 50,000 litres of drinking water for Ambae's 11,600 evacuated residents.
The warship relayed the supplies flown into Port Vila and Luganville by the Australian Air Force.
Personnel from HMAS Huon also assisted local authorities to establish temporary camps for evacuees.