New Zealand is giving the Fiji Red Cross $350,000 for its flood relief effort.
Foreign Minister Murray McCully says the situation in Fiji is still being assessed and further assistance could be considered.
"Sadly, six lives have been confirmed as lost and over 1500 people have been evacuated because of floods and bad weather affecting most parts of the country," he said on Thursday.
"The western division, including Nadi, Lautoka, Ba, Tavua and Rakiraki have been worst hit by flooding and many areas have been left with no power or water."
Mr McCully says the money will be used for the distribution of essential relief items and New Zealand is co-ordinating its aid with Australia and France.