The Fiji Met Service said the cyclone remains a category three storm packing winds of 130 kilometres per hour, gusting up to 185.
However, Keni was forecast to weaken drastically as it continued to move southeast into cooler waters.
The Met Service said within the next 18 hours the system could cease to be a cyclone.
Cyclone Keni wreaked havoc as it passed the southern islands of Fiji overnight bringing destructive winds and downpours causing flooding.
The Fijian island of Kadavu suffered a direct hit, with homes destroyed, trees uprooted and boats capsized on the island's south side.
At its peak, average wind gusts were up to 195km/h.
The Fiji government said yesterday all schools being used as evacuation centres would remain closed today as well as all schools on Kadavu.
Photo Facebook Toox Mat/Viti FM. Caption: Devastation caused by Cyclone Keni on the island of Kadavu, Fiji