A trough of low pressure lies slow moving over the Southern Part of Fiji.
The Nadi Weather Office says associated cloud and showers affect the country and isolated thunderstorms and heavy falls are expected.
The Weather office say heavy rain is currently been experienced in Suva, the Lomaviti and the Lau group and is expected to clear out later tomorrow.
This is also been experienced in the Eastern part of Vanua Levu and Taveuni.
Nadi is also experiencing showers and this is expected to continue till tomorrow.
The Weather Office says this may cause flash flooding in poor drainage and low lying areas.