The New Zealand foreign minister says following a request from the Tongan government, New Zealand will provide further assistance following Cyclone Ian.
The category-5 storm resulted in the loss of one life and caused significant damage to buildings and infrastructure.
Murray McCully says New Zealand will supply 300 emergency shelter kits to provide temporary shelter for 2,000 people, and assist the Red Cross with providing clean water in Ha'apai.
Mr McCully says it will also make 250,000 US dollars availiable to New Zealand non-government organisations working with partners on the ground.
He says the relief supplies will be delivered to Fua'amotu International Airport by a New Zealand Defence Force C-130 Hercules plane this afternoon.
The annoucement brings New Zealand's support to Tonga following Cyclone Ian to almost 420,000 US dollars.