The cyclone is expected to hit Vanuatu's second largest city, Luganville, at midday.
Evacuation centres have been set in Lugainville as authorities tell communities to stock up on food and water and prepare to evacuate their homes in case of flooding.
Philip Meto, principal provincial Liason Officer with Vanuatu Disaster Management Office, said on Monday people were aware of the cyclone risks and evacuation centres had been set up.
He said in previous cyclones, in flood-prone areas "more than 100 people are usually evacuated."